{"product_id":"1x-brake-rectifier-power-supply-module-as90-220vac-to-90vdc","title":"1X Brake Rectifier Power Supply Module AS90 220VAC to 90VDC","description":"\u003cstyle\u003e\n  \/* Koeed Namespace CSS - Strictly isolated for Shopify integration *\/\n  .koeed-container {\n    width: 100%;\n    font-family: inherit;\n    line-height: 1.6;\n    color: #333333;\n  }\n  .koeed-heading {\n    color: #16c8c8;\n    font-size: 1.5rem;\n    font-weight: bold;\n    margin-top: 2rem;\n    margin-bottom: 1rem;\n    border-bottom: 2px solid #16c8c8;\n    padding-bottom: 0.5rem;\n  }\n  .koeed-subheading {\n    color: #16c8c8;\n    font-size: 1.25rem;\n    font-weight: 600;\n    margin-top: 1.5rem;\n    margin-bottom: 0.75rem;\n  }\n  .koeed-brief-list {\n    list-style-type: disc;\n    padding-left: 1.5rem;\n    margin-bottom: 1.5rem;\n  }\n  .koeed-brief-list li {\n    margin-bottom: 0.5rem;\n  }\n  .koeed-table-wrapper {\n    overflow-x: auto;\n    width: 100%;\n    margin-bottom: 1.5rem;\n  }\n  .koeed-tech-table {\n    width: 100%;\n    border-collapse: collapse;\n    text-align: left;\n    font-size: 0.95rem;\n  }\n  .koeed-tech-table th, .koeed-tech-table td {\n    border: 1px solid #eeeeee;\n    padding: 12px 15px;\n  }\n  .koeed-tech-table th {\n    background-color: #16c8c8;\n    color: #ffffff;\n    font-weight: 600;\n  }\n  .koeed-tech-table tr:nth-child(even) {\n    background-color: #f4fcfc;\n  }\n  .koeed-tech-table tr:nth-child(odd) {\n    background-color: #fafafa;\n  }\n  .koeed-tool-box {\n    background-color: #f4fcfc;\n    border: 1px solid #16c8c8;\n    border-radius: 8px;\n    padding: 1.5rem;\n    margin: 2rem 0;\n  }\n  .koeed-form-group {\n    margin-bottom: 1rem;\n  }\n  .koeed-form-group label {\n    display: block;\n    font-weight: 600;\n    margin-bottom: 0.5rem;\n    color: #333333;\n  }\n  .koeed-form-group input {\n    width: 100%;\n    padding: 0.75rem;\n    border: 1px solid #cccccc;\n    border-radius: 4px;\n    font-family: inherit;\n  }\n  .koeed-btn {\n    background-color: #16c8c8;\n    color: #ffffff;\n    border: none;\n    padding: 0.75rem 1.5rem;\n    font-size: 1rem;\n    font-weight: bold;\n    border-radius: 4px;\n    cursor: pointer;\n    transition: background-color 0.3s ease;\n  }\n  .koeed-btn:hover {\n    background-color: #12a6a6;\n  }\n  .koeed-result-box {\n    margin-top: 1.5rem;\n    padding: 1rem;\n    background-color: #ffffff;\n    border-left: 4px solid #16c8c8;\n  }\n  .koeed-faq-item {\n    margin-bottom: 1.25rem;\n  }\n  .koeed-faq-question {\n    font-weight: bold;\n    color: #333333;\n    margin-bottom: 0.25rem;\n  }\n  .koeed-faq-answer {\n    color: #555555;\n  }\n  .koeed-alert {\n    background-color: #fff4e5;\n    border-left: 4px solid #ff9800;\n    padding: 1rem;\n    margin: 1rem 0;\n    font-size: 0.95rem;\n    color: #663c00;\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"koeed-container\"\u003e\n\n  \u003c!-- 1. Engineer's Quick Brief --\u003e\n  \u003ch2 class=\"koeed-heading\"\u003eEngineer's Quick Brief\u003c\/h2\u003e\n  \u003cul class=\"koeed-brief-list\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eStandard Half-Wave Conversion:\u003c\/strong\u003e Efficiently converts standard \u003cstrong\u003e220V AC\u003c\/strong\u003e mains power to \u003cstrong\u003e90V DC\u003c\/strong\u003e (commonly equivalent to 99V DC in inductive load calculations), perfectly matching standard electromagnetic brake coils.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIndustrial Durability:\u003c\/strong\u003e The internal diode bridge circuit is heavily potted in epoxy resin, providing excellent resistance against high mechanical vibrations, dust, and moisture in harsh plant environments.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePrimary Application:\u003c\/strong\u003e Essential MRO component for the braking systems of overhead cranes, electric hoists, elevator traction machines, and automated machine tools.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003c!-- 2. SEO Introduction --\u003e\n  \u003ch2 class=\"koeed-heading\"\u003eProduct Overview\u003c\/h2\u003e\n  \u003cp\u003eThe \u003cstrong\u003eAS90 Brake Rectifier Module\u003c\/strong\u003e is an industrial-grade half-wave power converter engineered to drive DC electromagnetic motor brakes. By accepting a standard input of \u003cstrong\u003e220VAC\u003c\/strong\u003e and stepping it down\/rectifying it to a stable \u003cstrong\u003e90VDC\u003c\/strong\u003e output, it ensures rapid and reliable engagement of friction brakes upon power loss or operational stops. Designed with compact dimensions and robust wiring terminals, the AS90 integrates seamlessly into standard motor terminal boxes or electrical control cabinets. It is a critical component for ensuring operational safety in lifting machinery and automated conveying systems.\u003c\/p\u003e\n\n  \u003c!-- 3. Technical Specifications --\u003e\n  \u003ch2 class=\"koeed-heading\"\u003eTechnical Specifications\u003c\/h2\u003e\n  \n  \u003cdiv class=\"koeed-alert\"\u003e\n    \u003cstrong\u003eWiring Warning:\u003c\/strong\u003e Never connect the 220VAC supply directly to the DC output terminals. Always verify the AC input lines (typically marked with ~ or AC) and the DC output lines (typically marked + and -) before applying power to prevent instantaneous diode destruction.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"koeed-table-wrapper\"\u003e\n    \u003ctable class=\"koeed-tech-table\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eSpecification Parameter\u003c\/th\u003e\n          \u003cth\u003eRating \/ Description\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eAS90\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eInput Voltage (AC)\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003e220V AC (50\/60Hz)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eOutput Voltage (DC)\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003e90V DC (Nominal) \/ 99V DC (Calculated)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eRectification Type\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eHalf-Wave Rectifier\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eLoad Type Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eInductive Load (Electromagnetic Brake Coils)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eEncapsulation \/ Protection\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eEpoxy Resin Potted (Vibration \u0026amp; Moisture Resistant)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eTerminal Configuration\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eStandard Flying Leads or Solder\/Spade Terminals (Refer to images)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eApplication Duty\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eContinuous operation capable\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- 4. Application Matrix --\u003e\n  \u003ch2 class=\"koeed-heading\"\u003eIndustrial Application Matrix\u003c\/h2\u003e\n  \u003cp\u003eThe AS90 220VAC to 90VDC rectifier is an industry-standard replacement part for various heavy-duty motor braking systems:\u003c\/p\u003e\n  \u003cul class=\"koeed-brief-list\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMaterial Handling Equipment:\u003c\/strong\u003e Overhead cranes, wire rope hoists, and chain hoists where immediate load holding is a safety requirement.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eElevator \u0026amp; Escalator Systems:\u003c\/strong\u003e Traction machine holding brakes.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWoodworking \u0026amp; Metalworking Machinery:\u003c\/strong\u003e Rapid deceleration spindles and conveyor belt stopping mechanisms.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003c!-- 5. Koeed B2B Tool: Brake Voltage Calculator --\u003e\n  \u003ch2 class=\"koeed-heading\"\u003eKoeed Motor Brake Voltage Calculator\u003c\/h2\u003e\n  \u003cp\u003eAre you replacing an unmarked rectifier? Use this engineering tool to determine what the DC brake coil voltage should be based on your available AC input voltage. \u003cem\u003e(Calculations are based on standard industrial inductive load coefficients).\u003c\/em\u003e\u003c\/p\u003e\n  \n  \u003cnoscript\u003e\n    \u003cp\u003e\u003cem\u003ePlease enable JavaScript in your browser to use the interactive Brake Voltage Calculator.\u003c\/em\u003e\u003c\/p\u003e\n  \u003c\/noscript\u003e\n\n  \u003cdiv class=\"koeed-tool-box\" id=\"koeed-rectifier-tool\"\u003e\n    \u003cdiv class=\"koeed-form-group\"\u003e\n      \u003clabel for=\"koeed-ac-input\"\u003eAvailable AC Input Voltage (Volts):\u003c\/label\u003e\n      \u003cinput type=\"number\" id=\"koeed-ac-input\" value=\"220\" placeholder=\"e.g. 220, 380, 110\"\u003e\n    \u003c\/div\u003e\n    \u003cbutton class=\"koeed-btn\" onclick=\"koeedCalculateVoltage()\"\u003eCalculate DC Brake Voltage\u003c\/button\u003e\n    \n    \u003cdiv class=\"koeed-result-box\" id=\"koeed-calc-result\" style=\"display: none;\"\u003e\n      \u003c!-- Results will be injected here via JS --\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- 6. Troubleshooting \u0026 FAQ --\u003e\n  \u003ch2 class=\"koeed-heading\"\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n  \n  \u003cdiv class=\"koeed-faq-item\"\u003e\n    \u003cdiv class=\"koeed-faq-question\"\u003e1. How do I test if my AS90 brake rectifier is burnt out?\u003c\/div\u003e\n    \u003cdiv class=\"koeed-faq-answer\"\u003eSet your digital multimeter to measure DC voltage. With the AC power securely turned on, measure the output across the DC terminals (+ and -). If your AC input is 220V but you read 0V DC (or a severely fluctuating low voltage), the internal diodes are likely blown and the unit must be replaced. \u003cem\u003eAlways follow proper electrical safety protocols.\u003c\/em\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n  \n  \u003cdiv class=\"koeed-faq-item\"\u003e\n    \u003cdiv class=\"koeed-faq-question\"\u003e2. Why does my motor brake fail to release, causing the motor to smoke?\u003c\/div\u003e\n    \u003cdiv class=\"koeed-faq-answer\"\u003eIf the brake does not release (lift), the motor is fighting mechanical friction. This is usually caused by: 1) A failed rectifier not supplying 90VDC to the coil. 2) A broken wire between the rectifier and the brake coil. 3) The air gap in the mechanical brake assembly being too wide for the electromagnetic force to overcome.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"koeed-faq-item\"\u003e\n    \u003cdiv class=\"koeed-faq-question\"\u003e3. Why is the output voltage sometimes stated as 99VDC instead of 90VDC?\u003c\/div\u003e\n    \u003cdiv class=\"koeed-faq-answer\"\u003eThe mathematical conversion for a half-wave rectifier is roughly 0.45 times the AC RMS input. Therefore, 220V * 0.45 = 99V. However, in the industry, \"90VDC brake coils\" are standard nomenclature. A 99V calculated output is perfectly safe and designed to drive a 90V nominal brake coil under load.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- 7. Cross-Reference \u0026 Selection --\u003e\n  \u003ch3 class=\"koeed-subheading\"\u003eCross-Reference Guide\u003c\/h3\u003e\n  \u003cp\u003eThe AS90 serves as a functional replacement for several standard half-wave rectifiers with identical electrical parameters (220VAC to ~90\/99VDC). Before substituting, verify physical space limitations in your motor junction box:\u003c\/p\u003e\n  \u003cul class=\"koeed-brief-list\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eStandard Replacements:\u003c\/strong\u003e RY-99, ZL1-99, MH-23, MH-25 (Check input\/output labels).\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUpgrades:\u003c\/strong\u003e If switching speeds are too slow, consider upgrading to an over-excitation (fast-acting) rectifier module, though this requires verifying the brake coil compatibility.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\u003c\/div\u003e\n\n\u003c!-- Interactive Tool JavaScript --\u003e\n\u003cscript\u003e\n  function koeedCalculateVoltage() {\n    var acInput = parseFloat(document.getElementById('koeed-ac-input').value);\n    var resultBox = document.getElementById('koeed-calc-result');\n    \n    if (isNaN(acInput) || acInput \u003c= 0) {\n      resultBox.style.display = 'block';\n      resultBox.innerHTML = '\u003cstrong\u003eError:\u003c\/strong\u003e Please enter a valid AC voltage (e.g., 220).';\n      return;\n    }\n\n    \/\/ Industrial standard coefficients for inductive brake loads\n    var halfWaveConst = 0.45;\n    var fullWaveConst = 0.90;\n\n    var halfWaveOutput = Math.round(acInput * halfWaveConst);\n    var fullWaveOutput = Math.round(acInput * fullWaveConst);\n\n    resultBox.style.display = 'block';\n    resultBox.innerHTML = '\u003cstrong\u003eCalculation Results for ' + acInput + 'V AC Input:\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e' +\n                          'If using a \u003cstrong\u003eHalf-Wave Rectifier (Like AS90)\u003c\/strong\u003e:\u003cbr\u003e' +\n                          '\u0026#8627; Required Brake Coil Voltage: \u003cstrong\u003e~' + halfWaveOutput + 'V DC\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e' +\n                          'If using a \u003cstrong\u003eFull-Wave Rectifier\u003c\/strong\u003e:\u003cbr\u003e' +\n                          '\u0026#8627; Required Brake Coil Voltage: \u003cstrong\u003e~' + fullWaveOutput + 'V DC\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e' +\n                          '\u003cem\u003eNote: It is normal for actual output to drop slightly under heavy inductive load. Match your replacement coil rating to the closest standard voltage (e.g., 90V, 99V, 170V, 190V).\u003c\/em\u003e';\n  }\n\u003c\/script\u003e\n\n\u003c!-- GEO Structured Data (JSON-LD) --\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n[\n  {\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n      {\n        \"@type\": \"Question\",\n        \"name\": \"How do I test if my AS90 brake rectifier is burnt out?\",\n        \"acceptedAnswer\": {\n          \"@type\": \"Answer\",\n          \"text\": \"Set your digital multimeter to measure DC voltage. With the AC power securely turned on, measure the output across the DC terminals. If your AC input is 220V but you read 0V DC (or a severely fluctuating low voltage), the internal diodes are likely blown and the unit must be replaced.\"\n        }\n      },\n      {\n        \"@type\": \"Question\",\n        \"name\": \"Why does my motor brake fail to release, causing the motor to smoke?\",\n        \"acceptedAnswer\": {\n          \"@type\": \"Answer\",\n          \"text\": \"If the brake does not release, the motor is fighting mechanical friction. This is usually caused by a failed rectifier not supplying 90VDC, a broken wire to the brake coil, or the mechanical air gap in the brake assembly being too wide.\"\n        }\n      },\n      {\n        \"@type\": \"Question\",\n        \"name\": \"Why is the 220V brake rectifier output voltage sometimes stated as 99VDC instead of 90VDC?\",\n        \"acceptedAnswer\": {\n          \"@type\": \"Answer\",\n          \"text\": \"The mathematical conversion for a half-wave rectifier is roughly 0.45 times the AC RMS input (220V * 0.45 = 99V). However, '90VDC' is the standard industry nomenclature for the brake coils. A 99V calculated output is designed to safely drive a 90V nominal brake coil.\"\n        }\n      }\n    ]\n  },\n  {\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"WebApplication\",\n    \"name\": \"Koeed Motor Brake Voltage Calculator\",\n    \"url\": \"https:\/\/koeed.com\",\n    \"description\": \"An engineering tool to calculate the required DC brake coil voltage based on the available AC input voltage for both half-wave and full-wave industrial motor rectifiers.\",\n    \"applicationCategory\": \"EngineeringApplication\",\n    \"operatingSystem\": \"All\",\n    \"browserRequirements\": \"Requires JavaScript\"\n  }\n]\n\u003c\/script\u003e","brand":"TECHPRO ELECTRONICS","offers":[{"title":"Default Title","offer_id":44812189401273,"sku":"405141185498","price":25.7,"currency_code":"USD","in_stock":true}],"url":"https:\/\/koeed.com\/ko\/products\/1x-brake-rectifier-power-supply-module-as90-220vac-to-90vdc","provider":"KOEED","version":"1.0","type":"link"}