{"id":1429,"date":"2026-09-15T20:30:25","date_gmt":"2026-09-15T12:30:25","guid":{"rendered":"https:\/\/www.paiyipower.com\/cctv-power-supply-brazil\/"},"modified":"2026-09-21T14:44:38","modified_gmt":"2026-09-21T06:44:38","slug":"cctv-power-supply-brazil","status":"publish","type":"post","link":"https:\/\/www.paiyipower.com\/pt\/cctv-power-supply-brazil\/","title":{"rendered":"Fonte para CFTV no Brasil: Sistemas 12V, NBR 14136 e Dist\u00e2ncias Longas de Cabo"},"content":{"rendered":"<h1>CCTV Power Supply Brazil: 12V Systems, NBR 14136 and Long Cable Runs<\/h1>\n<p><strong>Published:<\/strong> September 2026<br \/><strong>Reading time:<\/strong> 10 min<br \/><strong>Audience:<\/strong> security and CFTV integrators, camera and recorder brands, distributors and procurement teams specifying power supplies for Brazilian security installations<\/p>\n<p><strong>By Han \u2014 Paiyi Power<\/strong>, an OEM\/ODM power supply manufacturer working with brands and importers on market-access requirements, building custom and modified-standard supplies from 5W to 240W, from 200 pcs per model. <br \/><strong>Last updated: 15 September 2026.<\/strong><\/p>\n<hr>\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\" style=\"background:#f5f7f8;border:1px solid #d9dee3;border-radius:6px;padding:16px 20px;margin:28px 0;\">\n<h2 style=\"font-size:18px;margin:0 0 10px;border:none;padding:0;\">Contents<\/h2>\n<nav>\n<ul style=\"margin:0;padding-left:20px;\">\n<li style=\"margin:4px 0;\"><a href=\"#direct-answer-what-does-a-12v-cctv-power-supply-need-in-brazil\">Direct answer: what does a 12V CCTV power supply need in Brazil?<\/a><\/li>\n<li style=\"margin:4px 0;\"><a href=\"#why-the-brazilian-installation-is-harder-than-the-datasheet\">Why the Brazilian installation is harder than the datasheet<\/a><\/li>\n<li style=\"margin:4px 0;\"><a href=\"#12v-24v-or-poe\">12V, 24V or PoE?<\/a><\/li>\n<li style=\"margin:4px 0;\"><a href=\"#voltage-drop-decides-the-installation\">Voltage drop decides the installation<\/a><\/li>\n<li style=\"margin:4px 0;\"><a href=\"#sizing-for-ir-and-ptz\">Sizing for IR and PTZ<\/a><\/li>\n<li style=\"margin:4px 0;\"><a href=\"#the-brazilian-plug-and-input-voltage\">The Brazilian plug and input voltage<\/a><\/li>\n<li style=\"margin:4px 0;\"><a href=\"#certification-for-security-equipment\">Certification for security equipment<\/a><\/li>\n<li style=\"margin:4px 0;\"><a href=\"#heat-humidity-and-coastal-air\">Heat, humidity and coastal air<\/a><\/li>\n<li style=\"margin:4px 0;\"><a href=\"#surge-protection-matters-more-here\">Surge protection matters more here<\/a><\/li>\n<li style=\"margin:4px 0;\"><a href=\"#centralised-supply-or-one-adapter-per-camera\">Centralised supply or one adapter per camera?<\/a><\/li>\n<li style=\"margin:4px 0;\"><a href=\"#connectors-the-quiet-failure-point\">Connectors: the quiet failure point<\/a><\/li>\n<li style=\"margin:4px 0;\"><a href=\"#what-to-put-in-the-rfq\">What to put in the RFQ<\/a><\/li>\n<li style=\"margin:4px 0;\"><a href=\"#commissioning-what-to-verify-before-handover\">Commissioning: what to verify before handover<\/a><\/li>\n<li style=\"margin:4px 0;\"><a href=\"#brazil-cctv-power-specification-table\">CCTV power supply Brazil specification table<\/a><\/li>\n<li style=\"margin:4px 0;\"><a href=\"#frequently-asked-questions\">Frequently asked questions<\/a><\/li>\n<li style=\"margin:4px 0;\"><a href=\"#sources\">Sources<\/a><\/li>\n<\/ul>\n<\/nav>\n<\/div>\n<h2 style=\"border-bottom: 2px solid #1264a3; padding-bottom: 6px; margin-top: 36px;\" id=\"direct-answer-what-does-a-12v-cctv-power-supply-need-in-brazil\">Direct answer: what does a 12V CCTV power supply need in Brazil?<\/h2>\n<p><strong>A 12V CCTV power supply for a Brazilian installation needs four things beyond its rating: enough voltage margin to survive long cable runs, an input that covers both 127V and 220V at 60 Hz, an NBR 14136 plug on anything that connects to a Brazilian outlet, and real protection against condensation and surge.<\/strong> Brazil adds two constraints to the global 12V story \u2014 a dual-voltage grid and one of the most lightning-active climates on earth.<\/p>\n<p>Most CFTV problems we see are not electronics failures. They are installations where the supply was sized in a laboratory and the cable was run across a warehouse.<\/p>\n<p>This guide covers what to specify for Brazilian security work specifically. For the wider engineering background, see our guide to <a href=\"https:\/\/www.paiyipower.com\/cctv-camera-power-supply-oem\/\">CCTV camera power supply OEM<\/a>. At Paiyi Power we build from 200 pcs per model, with samples in about a week and first production in 5\u20136 weeks after approval.<\/p>\n<h2 style=\"border-bottom: 2px solid #1264a3; padding-bottom: 6px; margin-top: 36px;\" id=\"why-the-brazilian-installation-is-harder-than-the-datasheet\">Why the Brazilian installation is harder than the datasheet<\/h2>\n<p>Four characteristics of Brazilian CFTV work push the power supply harder than a typical office installation.<\/p>\n<ul>\n<li><strong>Long runs are normal.<\/strong> Perimeter walls, warehouses, retail floors and condominium garages put cameras far from the recorder closet, and 12V is unforgiving of distance.<\/li>\n<li><strong>Two grid voltages coexist.<\/strong> A single national project may touch 127V sites and 220V sites, sometimes in the same city.<\/li>\n<li><strong>Lightning activity is high.<\/strong> Brazil experiences intense electrical storms, and outdoor runs act as collectors for transients.<\/li>\n<li><strong>Humidity varies enormously.<\/strong> Coastal installations deal with salt air, while northern and interior regions run hot and humid for much of the year.<\/li>\n<\/ul>\n<p>Each of these is manageable on its own. The problem is when a single specification tries to ignore all four, and the first maintenance visit arrives six months after installation.<\/p>\n<h2 style=\"border-bottom: 2px solid #1264a3; padding-bottom: 6px; margin-top: 36px;\" id=\"12v-24v-or-poe\">12V, 24V or PoE?<\/h2>\n<p>The voltage choice is the architecture decision, and in Brazil it is usually settled by distance and by what is already installed.<\/p>\n<table style=\"border-collapse: collapse; width: 100%; margin: 18px 0; font-size: 15px;\">\n<thead>\n<tr>\n<th style=\"border: 1px solid #d9dee3; padding: 9px 11px; background: #f5f7f8; text-align: left;\">Approach<\/th>\n<th style=\"border: 1px solid #d9dee3; padding: 9px 11px; background: #f5f7f8; text-align: left;\">Where it fits in Brazil<\/th>\n<th style=\"border: 1px solid #d9dee3; padding: 9px 11px; background: #f5f7f8; text-align: left;\">What to watch<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">12V DC<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Small installations, short runs, retrofits where the cable already exists<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Cable distance is the limiting factor, not camera power<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">24V DC<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Larger commercial and perimeter installations<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Halves the current, so drop falls sharply; hardware must match<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">PoE<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Where the network cabling is already in place<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Needs switch or injector capacity, and its own external supply<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The practical rule for Brazilian work: <strong>if the run is longer than roughly fifteen metres at 12V, change the architecture rather than the adapter.<\/strong> Upsizing the supply does not fix a drop that happens in the cable, and this is the most frequent specification error we see.<\/p>\n<h2 style=\"border-bottom: 2px solid #1264a3; padding-bottom: 6px; margin-top: 36px;\" id=\"voltage-drop-decides-the-installation\">Voltage drop decides the installation<\/h2>\n<p>Voltage drop is a function of current, cable length and copper gauge, and at 12V it consumes a large share of a small supply voltage. For a typical 2 A camera on 18 AWG copper:<\/p>\n<table style=\"border-collapse: collapse; width: 100%; margin: 18px 0; font-size: 15px;\">\n<thead>\n<tr>\n<th style=\"border: 1px solid #d9dee3; padding: 9px 11px; background: #f5f7f8; text-align: left;\">Run (one way)<\/th>\n<th style=\"border: 1px solid #d9dee3; padding: 9px 11px; background: #f5f7f8; text-align: left;\">Drop at 2 A, 18 AWG<\/th>\n<th style=\"border: 1px solid #d9dee3; padding: 9px 11px; background: #f5f7f8; text-align: left;\">Verdict<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">10 m<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">0.84 V (7.0%)<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Marginal; use a heavier gauge<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">20 m<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">1.68 V (14%)<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Out of specification; move to 24V or PoE<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">30 m<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">2.52 V (21%)<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">The architecture is wrong for 12V<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><em>Indicative values for copper at 20 \u00b0C; confirm against your actual cable specification.<\/em> The industry target is under 5% at the camera. Two consequences follow: <strong>write the cable gauge into the installation manual<\/strong>, and for anything beyond about fifteen metres at 12V, change the voltage rather than the adapter.<\/p>\n<figure style=\"width: 768px\" class=\"wp-caption alignnone\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-large wp-image-1082\" src=\"https:\/\/www.paiyipower.com\/wp-content\/uploads\/2026\/09\/pyi-factory-ate-test.webp\" alt=\"CCTV power supply Brazil: ATE functional test before shipment\" width=\"768\" height=\"576\" srcset=\"https:\/\/www.paiyipower.com\/wp-content\/uploads\/2026\/09\/pyi-factory-ate-test.webp 1600w, https:\/\/www.paiyipower.com\/wp-content\/uploads\/2026\/09\/pyi-factory-ate-test-300x225.webp 300w, https:\/\/www.paiyipower.com\/wp-content\/uploads\/2026\/09\/pyi-factory-ate-test-1024x768.webp 1024w, https:\/\/www.paiyipower.com\/wp-content\/uploads\/2026\/09\/pyi-factory-ate-test-768x576.webp 768w, https:\/\/www.paiyipower.com\/wp-content\/uploads\/2026\/09\/pyi-factory-ate-test-1536x1152.webp 1536w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><figcaption class=\"wp-caption-text\">100% ATE functional test before shipment \u2014 every unit, not a sample.<\/figcaption><\/figure>\n<h2 style=\"border-bottom: 2px solid #1264a3; padding-bottom: 6px; margin-top: 36px;\" id=\"sizing-for-ir-and-ptz\">Sizing for IR and PTZ<\/h2>\n<p>The camera&#8217;s rated power is a daytime figure. Three loads stack on top of it, and all three behave differently from a steady draw.<\/p>\n<ul>\n<li><strong>IR illuminators.<\/strong> Night mode adds a few watts and a sharp inrush as the LEDs switch on at dusk. On a shared supply, dozens of cameras switching together form a real step load.<\/li>\n<li><strong>PTZ motors.<\/strong> Pan, tilt and zoom motors draw several times their running current at start-up, and more if they stall against a limit.<\/li>\n<li><strong>Heaters and blowers.<\/strong> Outdoor housings in the cooler southern states add a continuous heater load that can exceed the camera&#8217;s own draw.<\/li>\n<\/ul>\n<p>The rule we give customers: sum the continuous draw, add the IR load, add the worst-case motor or heater peak, then add 20\u201330% headroom. A supply that is correct on average and has no margin will sag at the dusk IR transition \u2014 and a brown-out at dusk looks exactly like a firmware bug in the logs.<\/p>\n<h2 style=\"border-bottom: 2px solid #1264a3; padding-bottom: 6px; margin-top: 36px;\" id=\"the-brazilian-plug-and-input-voltage\">The Brazilian plug and input voltage<\/h2>\n<p>These two requirements are non-negotiable and are often discovered at the port rather than at the design review.<\/p>\n<ul>\n<li><strong>NBR 14136 plug.<\/strong> Brazil has its own plug standard, with round pins in a national configuration and more than one current class. It is part of the certified configuration of the product, so it cannot be substituted later as a packaging change.<\/li>\n<li><strong>127V and 220V both exist.<\/strong> The nominal supply is 60 Hz, and the two common voltages mean a single-voltage product forces a regional stock split that most distributors would rather avoid.<\/li>\n<li><strong>Wide-range input solves both.<\/strong> A 100\u2013240V input covers the entire country at no meaningful cost, which is why it is the default assumption for any product intended for national distribution.<\/li>\n<\/ul>\n<p>Treat plug and voltage as design inputs, not as order-entry options. Our guide to <a href=\"https:\/\/www.paiyipower.com\/importing-power-supplies-into-brazil\/\">importing power supplies into Brazil<\/a> covers the certification and tax side of the same preparation.<\/p>\n<h2 style=\"border-bottom: 2px solid #1264a3; padding-bottom: 6px; margin-top: 36px;\" id=\"certification-for-security-equipment\">Certification for security equipment<\/h2>\n<p>Brazilian market access is a plan, not a checkbox, and the power supply is the part of a CFTV system with the clearest obligation.<\/p>\n<ul>\n<li><strong>The supply is in the compulsory scope.<\/strong> Power supplies, adapters and chargers are covered by INMETRO&#8217;s compulsory certification programme, which means testing and, depending on the scheme, assessment of the manufacturing site.<\/li>\n<li><strong>The holder must be Brazilian.<\/strong> A Brazilian legal entity holds the certificate, so a foreign manufacturer cannot hold it directly and the question of who holds it becomes a commercial decision.<\/li>\n<li><strong>Confirm the classification of the rest of the system.<\/strong> Whether the recorder or the camera itself needs separate certification depends on how the product is classified; confirm this with a Brazilian certification body rather than assuming the power supply approval covers the whole system.<\/li>\n<li><strong>Wireless cameras add a second track.<\/strong> Anything with Wi-Fi or other radio function falls under ANATEL as well, on its own timeline and with its own representative.<\/li>\n<\/ul>\n<p>We are explicit about our position: we build to the applicable safety and power specifications, and certification status varies by model and market. We do not claim INMETRO or ANATEL approval on every model \u2014 the certificate is per model and held by a Brazilian entity. See <a href=\"https:\/\/www.paiyipower.com\/power-adapter-certification-by-country\/\">certification by country<\/a> for how the schemes differ.<\/p>\n<h2 style=\"border-bottom: 2px solid #1264a3; padding-bottom: 6px; margin-top: 36px;\" id=\"heat-humidity-and-coastal-air\">Heat, humidity and coastal air<\/h2>\n<p>Brazil&#8217;s climate exposes outdoor power supplies to conditions that a European or North American specification often ignores.<\/p>\n<ul>\n<li><strong>Condensation, not rain.<\/strong> A sealed enclosure still breathes through its cable entry as it heats and cools each day, and the moisture condenses on the coldest surface inside. This is the most common cause of outdoor failures, and no IP rating prevents it.<\/li>\n<li><strong>Coastal salt air.<\/strong> Coastal installations corrode terminals and fasteners quickly; stainless or properly coated hardware matters more here than in most markets.<\/li>\n<li><strong>Humid interior regions.<\/strong> Heat and humidity together accelerate capacitor ageing, which is why a 105 \u00b0C capacitor rating is worth specifying rather than assumed.<\/li>\n<li><strong>Fan-cooled units in dusty locations.<\/strong> On a pole or in a garage, a fan pulls in dust and debris until the unit runs hotter than its rating assumes.<\/li>\n<\/ul>\n<p>For anything mounted outdoors, full encapsulation plus a UV-resistant cable removes most of this risk. We describe the same discipline for exposed equipment in the wider <a href=\"https:\/\/www.paiyipower.com\/industrial-sensor-power-supply-adapter\/\">industrial sensor power supply<\/a> guide.<\/p>\n<h2 style=\"border-bottom: 2px solid #1264a3; padding-bottom: 6px; margin-top: 36px;\" id=\"surge-protection-matters-more-here\">Surge protection matters more here<\/h2>\n<p>Brazil has some of the most intense lightning activity in the world, and CFTV runs are exactly the shape of cabling that collects transients.<\/p>\n<ul>\n<li><strong>Specify the level, not the word.<\/strong> Ask for the IEC 61000-4-5 test level explicitly rather than the phrase &#8220;surge protected&#8221;. A number can be verified; an adjective cannot.<\/li>\n<li><strong>Coordinate with the site&#8217;s protection.<\/strong> The supply&#8217;s internal protection is the last line of defence. Long outdoor runs still need a proper protective device at the building entry.<\/li>\n<li><strong>Decide the failure mode.<\/strong> Specify whether the unit should fail open after a large event, and whether that is acceptable for your service model. Some integrators prefer a sacrificial adapter; others need the run to stay live.<\/li>\n<li><strong>Protect the recorder side too.<\/strong> The supply is not the only equipment on the cable; the recorder input sees the same transient.<\/li>\n<\/ul>\n<p>In a market where storms are a routine operating condition rather than an exception, surge is a specification line item and not a feature bullet.<\/p>\n<h2 style=\"border-bottom: 2px solid #1264a3; padding-bottom: 6px; margin-top: 36px;\" id=\"centralised-supply-or-one-adapter-per-camera\">Centralised supply or one adapter per camera?<\/h2>\n<p>The choice changes the failure mode as much as the cost, and Brazilian installations tend to split by project size.<\/p>\n<ul>\n<li><strong>One adapter per camera.<\/strong> Simple to replace and easy to fault-find, but it multiplies the number of mains connections and the number of things that can fail.<\/li>\n<li><strong>Centralised supply.<\/strong> One unit in the recorder closet, with fused or individually protected outputs. Cheaper per camera and easier to monitor, but a single failure affects a group unless outputs are protected separately.<\/li>\n<li><strong>The recorder closet reality.<\/strong> Whatever the architecture, most Brazilian installations already concentrate equipment in one cabinet, which makes heat and ventilation a real specification rather than an afterthought.<\/li>\n<\/ul>\n<p>Two habits prevent most of the resulting tickets: <strong>protect each output separately<\/strong> so one camera cannot take down a group, and <strong>document the output map<\/strong> so the next technician does not have to trace cables under pressure.<\/p>\n<h2 style=\"border-bottom: 2px solid #1264a3; padding-bottom: 6px; margin-top: 36px;\" id=\"connectors-the-quiet-failure-point\">Connectors: the quiet failure point<\/h2>\n<p>In CFTV the connector causes more field returns than the electronics, and the mistakes are always the same three.<\/p>\n<ul>\n<li><strong>2.1 mm versus 2.5 mm inner pin.<\/strong> The two sizes look identical and both will physically mate with the wrong jack, producing intermittent contact and heat. Print the exact size on the drawing and on the label.<\/li>\n<li><strong>Polarity.<\/strong> Centre-positive is the convention for CFTV but is not universal, and reversed polarity damages equipment immediately.<\/li>\n<li><strong>Strain relief.<\/strong> Installed cameras have their cables tugged during cleaning, painting and maintenance. A moulded strain relief and a defined bend radius cost cents and prevent the most common intermittent fault.<\/li>\n<\/ul>\n<p>For permanently installed infrastructure, screw-lock connectors or terminal blocks are worth the small premium over a standard barrel.<\/p>\n<h2 style=\"border-bottom: 2px solid #1264a3; padding-bottom: 6px; margin-top: 36px;\" id=\"what-to-put-in-the-rfq\">What to put in the RFQ<\/h2>\n<p>A Brazilian CFTV specification should carry these lines, because omitting them is how a project ends up with a supply that works on the bench and not on the wall.<\/p>\n<ul>\n<li><strong>Input range and plug.<\/strong> Wide range covering 127V and 220V, with the Brazilian plug configuration named explicitly.<\/li>\n<li><strong>Output and headroom.<\/strong> Voltage, current, and the margin over simultaneous worst-case load.<\/li>\n<li><strong>Cable gauge and maximum run.<\/strong> Stated so that the installation is designed, not improvised.<\/li>\n<li><strong>Environmental rating.<\/strong> Enclosure protection and whether the unit is expected to be potted.<\/li>\n<li><strong>Surge level.<\/strong> The IEC 61000-4-5 test level, in numbers.<\/li>\n<li><strong>Certification expectations.<\/strong> Which market the product is for, and who is expected to hold the certificate.<\/li>\n<\/ul>\n<p>Fix these before tooling. Our <a href=\"https:\/\/www.paiyipower.com\/power-adapter-sample-evaluation\/\">sample evaluation checklist<\/a> and the <a href=\"https:\/\/www.paiyipower.com\/power-adapter-oem-agreement-guide\/\">OEM agreement guide<\/a> exist precisely so that what is certified is what is shipped.<\/p>\n<h2 style=\"border-bottom: 2px solid #1264a3; padding-bottom: 6px; margin-top: 36px;\" id=\"commissioning-what-to-verify-before-handover\">Commissioning: what to verify before handover<\/h2>\n<p>Brazilian installations are usually accepted on the day of handover, so the checks that matter are the ones that can be run on site with basic tools. Five of them catch almost everything.<\/p>\n<ul>\n<li><strong>Measure at the camera, not at the supply.<\/strong> Voltage at the far end under load is the reading that matters; checking it at the closet proves nothing about what the camera receives.<\/li>\n<li><strong>Watch the dusk transition.<\/strong> Observe a camera switching to night mode and confirm the supply holds. The IR switch-on is the load event that exposes a thin margin.<\/li>\n<li><strong>Confirm the plug and the label.<\/strong> The installed unit should match the certified configuration, including the plug and the nameplate marking, before anything leaves the site.<\/li>\n<li><strong>Record the output map.<\/strong> Which output feeds which camera, with the cable gauge and the run length, so the next technician does not have to trace cables under pressure.<\/li>\n<li><strong>Note the environment.<\/strong> Photograph the mounting position and the enclosure, so a future failure can be judged against the conditions the unit actually faced rather than the conditions everyone assumed.<\/li>\n<\/ul>\n<p>None of this takes long, and all of it is cheaper than a return visit to a site two hundred kilometres away.<\/p>\n<h2 style=\"border-bottom: 2px solid #1264a3; padding-bottom: 6px; margin-top: 36px;\" id=\"brazil-cctv-power-specification-table\">CCTV power supply Brazil specification table<\/h2>\n<table style=\"border-collapse: collapse; width: 100%; margin: 18px 0; font-size: 15px;\">\n<thead>\n<tr>\n<th style=\"border: 1px solid #d9dee3; padding: 9px 11px; background: #f5f7f8; text-align: left;\">Parameter<\/th>\n<th style=\"border: 1px solid #d9dee3; padding: 9px 11px; background: #f5f7f8; text-align: left;\">Typical for Brazilian CFTV installations<\/th>\n<th style=\"border: 1px solid #d9dee3; padding: 9px 11px; background: #f5f7f8; text-align: left;\">Note<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Output<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">12V DC 1\u20132 A per camera; 24V for long runs<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">24V roughly quarters the drop of 12V<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Input<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Wide range covering 127V and 220V, 60 Hz<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Both voltages exist nationally<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Plug<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">NBR 14136<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Part of the certified configuration<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Sizing<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Continuous plus IR plus peak, plus 20\u201330%<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Dusk IR transition is the real test<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Voltage drop<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Under 5% at the camera<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">State the cable gauge in the manual<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Environment<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Condensation protection; coastal hardware<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Humidity, not rainfall, is the usual killer<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Surge<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">IEC 61000-4-5 with the level declared<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Lightning activity here is among the world&#8217;s highest<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Certification<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">INMETRO for the supply; ANATEL if radio function exists<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Brazilian entity holds the certificate<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Reliability<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">100% ATE + burn-in; written change control<\/td>\n<td style=\"border: 1px solid #d9dee3; padding: 9px 11px;\">Fleets outlive product cycles<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<figure style=\"width: 768px\" class=\"wp-caption alignnone\"><img decoding=\"async\" class=\"size-large wp-image-1083\" src=\"https:\/\/www.paiyipower.com\/wp-content\/uploads\/2026\/09\/pyi-factory-aging-chamber.webp\" alt=\"Aging test chamber rack for CCTV power supplies bound for Brazil\" width=\"768\" height=\"349\" srcset=\"https:\/\/www.paiyipower.com\/wp-content\/uploads\/2026\/09\/pyi-factory-aging-chamber.webp 1600w, https:\/\/www.paiyipower.com\/wp-content\/uploads\/2026\/09\/pyi-factory-aging-chamber-300x136.webp 300w, https:\/\/www.paiyipower.com\/wp-content\/uploads\/2026\/09\/pyi-factory-aging-chamber-1024x465.webp 1024w, https:\/\/www.paiyipower.com\/wp-content\/uploads\/2026\/09\/pyi-factory-aging-chamber-768x348.webp 768w, https:\/\/www.paiyipower.com\/wp-content\/uploads\/2026\/09\/pyi-factory-aging-chamber-1536x697.webp 1536w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><figcaption class=\"wp-caption-text\">Burn-in on the aging rack \u2014 where marginal units are found before they ship.<\/figcaption><\/figure>\n<figure style=\"width: 768px\" class=\"wp-caption alignnone\"><img decoding=\"async\" class=\"size-large wp-image-1076\" src=\"https:\/\/www.paiyipower.com\/wp-content\/uploads\/2026\/09\/pyi-factory-warehouse.webp\" alt=\"Finished-goods warehouse holding CCTV power supplies for Brazil\" width=\"768\" height=\"575\" srcset=\"https:\/\/www.paiyipower.com\/wp-content\/uploads\/2026\/09\/pyi-factory-warehouse.webp 1600w, https:\/\/www.paiyipower.com\/wp-content\/uploads\/2026\/09\/pyi-factory-warehouse-300x225.webp 300w, https:\/\/www.paiyipower.com\/wp-content\/uploads\/2026\/09\/pyi-factory-warehouse-1024x767.webp 1024w, https:\/\/www.paiyipower.com\/wp-content\/uploads\/2026\/09\/pyi-factory-warehouse-768x576.webp 768w, https:\/\/www.paiyipower.com\/wp-content\/uploads\/2026\/09\/pyi-factory-warehouse-1536x1151.webp 1536w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><figcaption class=\"wp-caption-text\">Finished-goods warehouse \u2014 Brazilian programmes ship in batches matched to project schedules.<\/figcaption><\/figure>\n<hr>\n<h2 style=\"border-bottom: 2px solid #1264a3; padding-bottom: 6px; margin-top: 36px;\" id=\"frequently-asked-questions\">Frequently asked questions<\/h2>\n<h3 style=\"margin-top: 24px; color: #2f6b4f;\">What voltage should a CCTV power supply use in Brazil?<\/h3>\n<p><strong>12V DC remains the default for small and retrofit installations, but 24V is the better choice for anything with long cable runs.<\/strong> Doubling the voltage halves the current and reduces drop dramatically, which matters far more than the supply&#8217;s rating.<\/p>\n<h3 style=\"margin-top: 24px; color: #2f6b4f;\">How long can a 12V cable run be?<\/h3>\n<p><strong>Roughly ten to fifteen metres before drop exceeds 5% at typical camera currents on standard gauge.<\/strong> Beyond that, change to 24V or PoE rather than buying a bigger 12V adapter, because upsizing does not fix a drop that happens in the cable.<\/p>\n<h3 style=\"margin-top: 24px; color: #2f6b4f;\">What plug does Brazil use for CCTV equipment?<\/h3>\n<p><strong>NBR 14136, the Brazilian plug standard.<\/strong> It uses round pins in a national configuration and comes in more than one current class, and it forms part of the product&#8217;s certified configuration so it cannot be changed after certification.<\/p>\n<h3 style=\"margin-top: 24px; color: #2f6b4f;\">Does a CCTV power supply need INMETRO certification?<\/h3>\n<p><strong>Power supplies and adapters are inside INMETRO&#8217;s compulsory certification scope.<\/strong> Confirm the classification of the recorder and camera separately, and note that a Brazilian legal entity must hold the certificate.<\/p>\n<h3 style=\"margin-top: 24px; color: #2f6b4f;\">Do wireless cameras need ANATEL approval?<\/h3>\n<p><strong>Yes \u2014 anything with Wi-Fi or other radio function falls under ANATEL as well as INMETRO.<\/strong> It runs on its own timeline and requires its own Brazilian representative, so wireless variants should be planned on the longer path.<\/p>\n<h3 style=\"margin-top: 24px; color: #2f6b4f;\">How do I stop outdoor adapters failing in the rainy season?<\/h3>\n<p><strong>Design against condensation rather than rainfall.<\/strong> A sealed enclosure still breathes through its cable entry as it cycles daily, so potting, a correctly sized cable gland and UV-resistant cable remove most of the risk.<\/p>\n<h3 style=\"margin-top: 24px; color: #2f6b4f;\">Why does the camera reboot every evening?<\/h3>\n<p><strong>Almost always voltage drop plus the IR load switching on at dusk.<\/strong> Check the cable gauge and run length first, then confirm the supply has 20\u201330% headroom over the combined worst-case load.<\/p>\n<h3 style=\"margin-top: 24px; color: #2f6b4f;\">One supply for the whole system, or one per camera?<\/h3>\n<p><strong>Centralised is cheaper per camera and easier to monitor; per-camera is easier to fault-find.<\/strong> Whichever you choose, protect each output separately so one camera cannot take down a group, and document the output map.<\/p>\n<h3 style=\"margin-top: 24px; color: #2f6b4f;\">What MOQ and lead time apply for Brazilian CFTV programmes?<\/h3>\n<p><strong>From 200 pcs per model at Paiyi Power, with samples in about a week and first production 5\u20136 weeks after sample approval.<\/strong> Certification status varies by model and market, and we do not claim INMETRO or ANATEL approval for every model \u2014 the Brazilian certificate is per model and held by a Brazilian entity.<\/p>\n<hr>\n<hr \/>\n<p>Free tool: check your own numbers before the next site visit.<\/p>\n<ul>\n<li><a href=\"https:\/\/www.paiyipower.com\/voltage-drop-calculator\/\">Voltage drop and wire gauge calculator &#8211; enter voltage, current, gauge and distance and see what the camera actually receives<\/a><\/li>\n<\/ul>\n<h2 style=\"border-bottom: 2px solid #1264a3; padding-bottom: 6px; margin-top: 36px;\" id=\"sources\">Sources<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.gov.br\/inmetro\/\" rel=\"noopener\" target=\"_blank\">INMETRO \u2014 compulsory certification and conformity assessment in Brazil<\/a><\/li>\n<li><a href=\"https:\/\/www.abnt.org.br\/\" rel=\"noopener\" target=\"_blank\">ABNT \u2014 Brazilian standards, including the NBR 14136 plug standard<\/a><\/li>\n<li><a href=\"https:\/\/www.gov.br\/anatel\/\" rel=\"noopener\" target=\"_blank\">ANATEL \u2014 homologation for equipment with radio or telecom function<\/a><\/li>\n<li><a href=\"https:\/\/www.iec.ch\/\" rel=\"noopener\" target=\"_blank\">IEC \u2014 62368-1 safety and 61000-4-5 surge immunity standards<\/a><\/li>\n<li><a href=\"https:\/\/www.gov.br\/inpe\/\" rel=\"noopener\" target=\"_blank\">INPE \u2014 Brazilian monitoring of atmospheric electricity and lightning activity<\/a><\/li>\n<\/ul>\n<p><em>Related on this blog: <a href=\"https:\/\/www.paiyipower.com\/cctv-camera-power-supply-oem\/\">CCTV camera power supply OEM<\/a>, <a href=\"https:\/\/www.paiyipower.com\/importing-power-supplies-into-brazil\/\">importing power supplies into Brazil<\/a>, <a href=\"https:\/\/www.paiyipower.com\/power-adapter-certification-by-country\/\">power adapter certification by country<\/a>, <a href=\"https:\/\/www.paiyipower.com\/industrial-sensor-power-supply-adapter\/\">industrial sensor power supply adapter<\/a>.<\/em><\/p>\n<p><!-- faq-schema-v1 --><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What voltage should a CCTV power supply use in Brazil?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"12V DC remains the default for small and retrofit installations, but 24V is the better choice for anything with long cable runs. Doubling the voltage halves the current and reduces drop dramatically, which matters far more than the supply's rating.\"}},{\"@type\":\"Question\",\"name\":\"How long can a 12V cable run be?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Roughly ten to fifteen metres before drop exceeds 5% at typical camera currents on standard gauge. Beyond that, change to 24V or PoE rather than buying a bigger 12V adapter, because upsizing does not fix a drop that happens in the cable.\"}},{\"@type\":\"Question\",\"name\":\"What plug does Brazil use for CCTV equipment?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"NBR 14136, the Brazilian plug standard. It uses round pins in a national configuration and comes in more than one current class, and it forms part of the product's certified configuration so it cannot be changed after certification.\"}},{\"@type\":\"Question\",\"name\":\"Does a CCTV power supply need INMETRO certification?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Power supplies and adapters are inside INMETRO's compulsory certification scope. Confirm the classification of the recorder and camera separately, and note that a Brazilian legal entity must hold the certificate.\"}},{\"@type\":\"Question\",\"name\":\"Do wireless cameras need ANATEL approval?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes \u2014 anything with Wi-Fi or other radio function falls under ANATEL as well as INMETRO. It runs on its own timeline and requires its own Brazilian representative, so wireless variants should be planned on the longer path.\"}},{\"@type\":\"Question\",\"name\":\"How do I stop outdoor adapters failing in the rainy season?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Design against condensation rather than rainfall. A sealed enclosure still breathes through its cable entry as it cycles daily, so potting, a correctly sized cable gland and UV-resistant cable remove most of the risk.\"}},{\"@type\":\"Question\",\"name\":\"Why does the camera reboot every evening?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Almost always voltage drop plus the IR load switching on at dusk. Check the cable gauge and run length first, then confirm the supply has 20\u201330% headroom over the combined worst-case load.\"}},{\"@type\":\"Question\",\"name\":\"One supply for the whole system, or one per camera?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Centralised is cheaper per camera and easier to monitor; per-camera is easier to fault-find. Whichever you choose, protect each output separately so one camera cannot take down a group, and document the output map.\"}},{\"@type\":\"Question\",\"name\":\"What MOQ and lead time apply for Brazilian CFTV programmes?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"From 200 pcs per model at Paiyi Power, with samples in about a week and first production 5\u20136 weeks after sample approval. Certification status varies by model and market, and we do not claim INMETRO or ANATEL approval for every model \u2014 the Brazilian certificate is per model and held by a Brazilian entity. Free tool: check your own numbers before the next site visit. Voltage drop and wire gauge calculator - enter voltage, current, gauge and distance and see what the camera actually receives\"}}]}<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>CCTV Power Supply Brazil: 12V Systems, NBR 14136 and Long Cable Runs Published: September 2026Reading time: 10 minAudience: security and CFTV integrators, camera and recorder brands, distributors and procurement teams specifying power supplies for Brazilian security installations By Han \u2014 Paiyi Power, an OEM\/ODM power supply manufacturer working with brands and importers on market-access requirements, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1078,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-1429","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-services"],"_links":{"self":[{"href":"https:\/\/www.paiyipower.com\/pt\/wp-json\/wp\/v2\/posts\/1429","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.paiyipower.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.paiyipower.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.paiyipower.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.paiyipower.com\/pt\/wp-json\/wp\/v2\/comments?post=1429"}],"version-history":[{"count":2,"href":"https:\/\/www.paiyipower.com\/pt\/wp-json\/wp\/v2\/posts\/1429\/revisions"}],"predecessor-version":[{"id":1466,"href":"https:\/\/www.paiyipower.com\/pt\/wp-json\/wp\/v2\/posts\/1429\/revisions\/1466"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.paiyipower.com\/pt\/wp-json\/wp\/v2\/media\/1078"}],"wp:attachment":[{"href":"https:\/\/www.paiyipower.com\/pt\/wp-json\/wp\/v2\/media?parent=1429"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.paiyipower.com\/pt\/wp-json\/wp\/v2\/categories?post=1429"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.paiyipower.com\/pt\/wp-json\/wp\/v2\/tags?post=1429"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}