Skip to content

What are you looking for?


You may also like

30731808-503 Honeywell Regulator Cards30731808-503 Honeywell Regulator Cards30731808-503 Honeywell Regulator Cards
30731808-503 Honeywell Regulator Cards
30731808-503 Honeywell Regulator Cards
30731808-503 Honeywell Regulator Cards

30731808-503 Honeywell Regulator Cards


Only 10 left - Selling fast

PRODUCT SKU : 30731808-503

PRODUCT TYPE : Power Supply Modules

PRODUCT VENDOR : Honeywell


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

Product Details

The Honeywell 30731808-503, also cataloged as the 30731808-503 Regulator Card, operates as a dedicated hardware component for internal voltage regulation and power rail conditioning within TDC 2000 chassis assemblies.

Hardware Specifications

Parameter Specification
Model 30731808-503
Brand Honeywell
Origin USA / Global Manufacturing
Weight 1.51 lbs (0.68 kg)
Operating Temp Standard Industrial Chassis Rating
Power Consumption Powered via 24 VDC Backplane Input
Form Factor Slide-in Circuit Card Module
Input Voltage 24 VDC (from backplane)
Output Voltages 5 VDC and 12 VDC (to chassis logic)
Diagnostic Features Front-accessible Test Sockets (Fault Detection & Calibration)
Protection 2 Removable Fuses

Channel-to-Channel Isolation and Power Rail Conditioning

The 30731808-503 Regulator Card converts incoming 24 VDC backplane bus power into regulated 5 VDC and 12 VDC supply lines required by adjacent system processing and I/O logic boards. Integrated filter topologies reduce electrical ripple and transient voltage spikes across internal distribution buses.

To maintain operational integrity and channel-to-channel isolation across system cards, the module incorporates front-panel test sockets that facilitate real-time fault detection and output calibration without disconnecting backplane wiring. Dual removable fuses provide localized overcurrent protection, isolating internal power faults and preventing damage to common chassis backplanes.

Frequently Asked Questions

Q: What are the primary output power rails generated by the 30731808-503 regulator module?

A: The card accepts 24 VDC from the backplane and regulates it down to stable 5 VDC and 12 VDC outputs for chassis electronics.

Q: What purpose do the front-panel test sockets serve during maintenance operations?

A: The test sockets permit direct multimeter probe connection for real-time voltage calibration and operational fault detection.

Q: How is overcurrent protection implemented on the 30731808-503 board?

A: The module is equipped with two removable fuses accessible on the board for rapid inspection and field replacement.

Field Installation Guidelines

  • De-energize the rack cabinet main power feed prior to inserting or removing the regulator card from the chassis slot.
  • Ensure correct keying and alignment along the card cage rails before pushing the module firmly into the backplane connectors.
  • Wear a grounded ESD wrist strap during handling to avoid electrostatic discharge damage to exposed solid-state components.
  • Verify fuse ratings match factory specifications before applying 24 VDC backplane power to the assembly.

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.




Recently Viewed Products

Tech & Buying Guide

Technical Insights, Installation Guides, and Buying Tips
Demystifying the DDE Protocol in Legacy Industrial Automation Systems

Demystifying the DDE Protocol in Legacy Industrial Automation Systems

Modern control systems rely heavily on seamless interprocess communication to exchange operational data between software programs. Microsoft first introduced the Dynamic Data Exchange (DDE) protocol in 1987 to enable real-time data sharing. In factory automation, DDE served as an early bridge between control software and Windows desktop applications. Therefore, understanding DDE mechanics provides crucial insights into how legacy industrial networks established software-level connectivity.

Read more
Demystifying CPU Communication Ports in Siemens PLC Architectures

Demystifying CPU Communication Ports in Siemens PLC Architectures

Industrial automation relies heavily on robust data exchange between devices. Without seamless connectivity, field instruments, network switches, human-machine interfaces, and programmable logic controllers cannot coordinate effectively. Therefore, understanding the various CPU communication ports available in Siemens hardware ensures efficient factory automation design and seamless system integration.

Read more
Mastering the Siemens PLC Scan Cycle: How the CPU Executes Automation Programs

Mastering the Siemens PLC Scan Cycle: How the CPU Executes Automation Programs

Industrial automation relies heavily on programmable logic controllers (PLCs) to manage complex manufacturing processes. Many engineers dive straight into programming without mastering the underlying architecture. However, understanding how a PLC CPU executes a program ensures reliable system design. Therefore, mastering the scan cycle optimizes both performance and troubleshooting in modern control systems.

Read more