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5501-381 | Woodward | TMR Power Supply Unit5501-381 | Woodward | TMR Power Supply Unit5501-381 | Woodward | TMR Power Supply Unit
5501-381 | Woodward | TMR Power Supply Unit
5501-381 | Woodward | TMR Power Supply Unit
5501-381 | Woodward | TMR Power Supply Unit

5501-381 | Woodward | TMR Power Supply Unit


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PRODUCT SKU : 5501-381

PRODUCT TYPE : Power Supply Modules

PRODUCT VENDOR : Woodward


  • 100% Genuine Parts – Risk-Free 30-Day Returns
  • 1-Year Warranty & Expert Support for Every Order

Product Details

Configured for high-voltage power regulation in MicroNet TMR control systems, the Woodward 5501-381 (5009/MicroNet Triple Module Redundant Power Supply) provides direct electrical execution of 220 VAC to DC power conversion.

Hardware Specifications

Parameter Specification
Model 5501-381
Brand Woodward
Origin Not specified
Weight 22 kg
Power Consumption 1250 VA (Max)
Input Voltage 220 VAC (47-63 Hz)
Input Current 6.7 A (Max)

Thermal Heat Sink Dissipation Profiles and Load Regulation

The 5501-381 utilizes dedicated internal thermal heat sink dissipation profiles to manage the 1250 VA power load during continuous operation. The module provides harmonic distortion suppression on the AC input stage to maintain clean DC rail output for critical controller logic. In TMR configurations, the unit must be paired across separate chassis and linked via ribbon cabling to maintain redundancy. The internal circuitry is optimized to ensure that actuator loop feedback response remains stable during AC input frequency fluctuations within the 47-63 Hz range. Proper ventilation is required to prevent thermal triggers of the integrated overtemperature protection circuit.

Frequently Asked Questions

Q: Does the 5501-381 support hot-swapping during normal controller operation?

A: Yes. The board is designed for hot-replacement, allowing the module to be removed and installed without requiring the control chassis to cease operation, provided the secondary redundant supply is active.

Q: What do the four status LEDs on the front faceplate indicate?

A: The LEDs monitor Input Fault, Power Supply Fault, Overtemperature, and OK status. The green OK LED remains illuminated only when the power supply is operating within nominal parameters with no active internal or external faults.

Field Installation Guidelines

  • Chassis Requirements: Install the board within the MicroNet TMR power supply chassis. If dual boards are used for redundancy, they must be housed in separate chassis and interconnected via the specified ribbon cabling.
  • Overcurrent Protection: The input circuit requires a 10 A time-delay fuse or breaker to ensure adequate protection against inrush current transients.
  • Wiring: Ensure the 220 VAC input is securely terminated. Follow all local electrical codes regarding high-voltage AC cabling separation from low-voltage signal lines.
  • Status Monitoring: Regularly verify the LED status. If the Power Supply Fault or Overtemperature LED is active, perform an immediate thermal inspection and check input voltage stability.

Additional Information

  • 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
  • 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
  • 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
  • Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
  • Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
  • Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.




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