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TECHPRO ELECTRONICS

1X Brake Rectifier Power Supply Module AS90 220VAC to 90VDC

1X Brake Rectifier Power Supply Module AS90 220VAC to 90VDC

$25.70 USD
$25.70 USD $25.70 USD
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Condition new
MPN Unbranded
model AS90
input_voltage 220VAC
output_voltage 90VDC
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Description


1X Brake Rectifier Power Supply Module AS90 220VAC to 90VDC

AS90 efficiently converts 220VAC to 90VDC for reliable braking system applications.

The AS90 brake rectifier power supply module is designed for efficient voltage conversion in braking systems. It reliably converts 220VAC to 90VDC, ensuring optimal performance and efficiency.

Engineer's Quick Brief

  • Standard Half-Wave Conversion: Efficiently converts standard 220V AC mains power to 90V DC (commonly equivalent to 99V DC in inductive load calculations), perfectly matching standard electromagnetic brake coils.
  • Industrial Durability: 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.
  • Primary Application: Essential MRO component for the braking systems of overhead cranes, electric hoists, elevator traction machines, and automated machine tools.

Product Overview

The AS90 Brake Rectifier Module is an industrial-grade half-wave power converter engineered to drive DC electromagnetic motor brakes. By accepting a standard input of 220VAC and stepping it down/rectifying it to a stable 90VDC 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.

Technical Specifications

Wiring Warning: 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.
Specification Parameter Rating / Description
Model AS90
Input Voltage (AC) 220V AC (50/60Hz)
Output Voltage (DC) 90V DC (Nominal) / 99V DC (Calculated)
Rectification Type Half-Wave Rectifier
Load Type Compatibility Inductive Load (Electromagnetic Brake Coils)
Encapsulation / Protection Epoxy Resin Potted (Vibration & Moisture Resistant)
Terminal Configuration Standard Flying Leads or Solder/Spade Terminals (Refer to images)
Application Duty Continuous operation capable

Industrial Application Matrix

The AS90 220VAC to 90VDC rectifier is an industry-standard replacement part for various heavy-duty motor braking systems:

  • Material Handling Equipment: Overhead cranes, wire rope hoists, and chain hoists where immediate load holding is a safety requirement.
  • Elevator & Escalator Systems: Traction machine holding brakes.
  • Woodworking & Metalworking Machinery: Rapid deceleration spindles and conveyor belt stopping mechanisms.

Koeed Motor Brake Voltage Calculator

Are 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. (Calculations are based on standard industrial inductive load coefficients).

Troubleshooting & FAQ

1. How do I test if my AS90 brake rectifier is burnt out?
Set 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. Always follow proper electrical safety protocols.
2. Why does my motor brake fail to release, causing the motor to smoke?
If 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.
3. Why is the output voltage sometimes stated as 99VDC instead of 90VDC?
The 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.

Cross-Reference Guide

The 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:

  • Standard Replacements: RY-99, ZL1-99, MH-23, MH-25 (Check input/output labels).
  • Upgrades: If switching speeds are too slow, consider upgrading to an over-excitation (fast-acting) rectifier module, though this requires verifying the brake coil compatibility.

About Koeed Automation

Expert Supply Solutions for Global Industrial Electronics

At Koeed.com, we are professional architects of the industrial electronics supply chain. We specialize in providing high-performance PLCs, HMIs, Servo Motors, Drives, and Converters to ensure that modern manufacturing operations remain efficient, reliable, and future-proof in 2026’s competitive landscape.

🛡️ Certified Quality

We source only 100% authentic industrial hardware from global category leaders. Every component undergoes a rigorous verification process to meet Industry 4.0 reliability standards.

⚙️ Engineering Domain

Our experts provide more than just parts; we offer technical insight. We assist in complex product selection and compatibility audits for both legacy system upgrades and new installations.

🌐 Rapid Global Logistics

Time is money in industrial automation. Our optimized supply network ensures that critical components reach your facility quickly, significantly reducing unplanned downtime and operational loss.

Strategic Global Portfolio: Siemens, Omron, FANUC, Schneider Electric, Mitsubishi, Yaskawa, Allen-Bradley, and other elite industrial brands.

Supporting your vision for a smarter, more efficient industrial future.

Alternative Names


  • AS90 Rectifier Module
  • AS90 Voltage Regulator
  • 1X Brake Rectifier Module
  • AS90 Power Supply Unit

Special Reminder

Important

If you have any questions about product information and prices, please feel free to contact us by email or WhatsApp. We will respond quickly.

  • Business Days Only (Monday through Saturday)
  • It takes up to 10 days from the time of ordering (excluding Saturdays and Sundays) to the time of delivery to your designated location. Worldwide delivery.
  • Within 3 days after placing the order, we will send you photos and videos of the product via email or WhatsApp for confirmation

International shipping - items may be subject to customs processing depending on the item's customs value.
Sellers declare the item's customs value and must comply with customs declaration laws.
As the buyer, you should be aware of possible:

  • Delays from customs inspection.
  • Import duties and taxes which buyers must pay.
  • Brokerage fees payable at the point of delivery.

Shipping Policy

Global Delivery

We ship to customers all over the world. Our primary logistics providers are DHL, UPS, TNT, FedEx, and EMS.

Processing Time

All orders are processed within 72 hours of purchase. Please note that this applies to business days only.

Shipping Rates & Delivery Estimates

Shipping charges for your order will be calculated and displayed at checkout. Delivery estimates are within 7-14 days. Please note that these shipping times are only estimates and unfortunately, cannot be guaranteed.

Shipment Confirmation & Order Tracking

You will receive a Shipment Confirmation email once your order has shipped containing your tracking number(s). The tracking number will be active within 24 hours.

Customs, Duties, and Taxes

Please note, international shipping services do vary from country to country. To find out the exact services that are available, please put in your full address at checkout. Shipping internationally does mean that you may be required to pay customs and import taxes. All international customers are responsible for the customs rates within their own country. For further information, we recommend contacting your local customs office.

Damages

We take every reasonable precaution to ensure that products are not damaged. If the item is damaged in transit, please immediately contact us. We are not liable for any products damaged or lost during shipping. If you received your order damaged, please contact the shipment carrier to file a claim. Please save all packaging materials and damaged goods before filing a claim.

Force Majeure

When encountering with force majeure, the processing of orders will be delayed. Nevertheless, it is ensured that your order will be processed in a fast manner when weather permits.

Address Verification

Please verify you have the correct shipping address on your order PRIOR to making payment as this is the address we will ship to.

Return Policy

For more information, visit our Return Policy page.

International shipping - items may be subject to customs processing depending on the item's customs value.

Sellers declare the item's customs value and must comply with customs declaration laws.
As the buyer, you should be aware of possible:
• Delays from customs inspection.
• Import duties and taxes which buyers must pay.
• Brokerage fees payable at the point of delivery.

Contact Us

If you have any questions about your order, please contact us at moritta@koeed.com.

Return Policy

Return and Refund Policy

We want you to be completely satisfied with your purchase on our store. If for any reason you are not entirely satisfied, we're here to help!

Returns

You have a generous 30 calendar days to return an item from the date you received it. To be eligible for a return, ensure the item is in its original, unworn, and unused condition with tags and packaging intact. Retain your receipt or proof of purchase for eligibility. Please note that certain items are non-returnable like perishables, custom products, personal care goods, hazardous materials, flammable liquids, and gases. Reach out for clarifications on specific items.

Return Process

Commence the return process by reaching out to us at moritta@koeed.com. Upon approval, we will furnish you with a return shipping label and detailed instructions for dispatching your package. Unnotified returns will not be accepted.

Damages and Issues

Kindly review your order upon delivery. Notify us promptly if it arrives defective, damaged, or incorrect. We will address the matter swiftly.

Exchanges

Facilitate a swift exchange by returning the original item once approved and making a new purchase.

EU 14-Day Cooling Off Period

EU-bound shipments allow a 14-day cancellation or return period without justification. Conditions mirror standard returns.

Refunds

Upon receiving and inspecting your return, we’ll inform you of the refund status. Approved refunds are automatically processed within 10 business days via the initial payment method. Allow time for financial institutions to finalize the refund. For delays exceeding 15 business days post-approval, contact us at moritta@koeed.com.

Shipping

You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.

Contact Us

If you have any questions on how to return your item to us, feel free to contact us at moritta@koeed.com.

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