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  • UR-SHA | GE Multilin | Power Supply Module

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UR-SHA | GE Multilin | Power Supply Module

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  • Part Number: URSHA
  • Brand: General Electric
  • Type: Power Supply Module
  • Dimensions: 8.2x12.2x6cm
  • Country of Origin: USA
  • Barcode: 8537101190

Additional Specifications

Color / Pattern
  • Black
Tags: DCS , GENERAL ELECTRIC , Power Supply Module

وصف المنتج

GE Multilin UR SHA Power Supply Module

The GE Multilin UR SHA is a third‑generation high‑voltage power supply module for Universal Relay (UR) systems. It replaces the earlier UR‑1H and UR‑RH modules, delivering higher output power, improved thermal performance, and enhanced isolation ratings. As part of the UR modular architecture, the UR‑SHA installs behind the relay’s hinged faceplate and provides regulated power to both the relay chassis and its dry‑contact input circuits.

Hardware Specifications

Parameter Specification
Model UR‑SHA
Manufacturer GE Multilin
Origin Markham, Ontario, Canada
Weight approx. 2 lb 2 oz
Dimensions 6.5 in × 6.5 in × 1.75 in
Voltage Range 125–250 V DC (nominal) • 100–240 V AC (50/60 Hz)
Output Power 45 W (increased from 35 W in earlier generations)
Dry Contact Input Power 48 V DC
Isolation Voltage 2300 V AC
Environmental Option “A” = Horizontal 19‑inch rack, harsh‑environment coating
Software Support EnerVista UR

Functional Description

The UR‑SHA is one of the most advanced power‑supply modules in the UR family. It provides:

  • High‑voltage AC/DC input capability
  • Regulated power for relay electronics
  • 48 V DC supply for dry‑contact inputs
  • Improved efficiency and reduced heat generation
  • Enhanced isolation and over‑temperature protection

The module is designed to operate reliably in demanding industrial and utility environments. Its built‑in protection features include:

  • Over‑temperature shutdown at 105°C
  • Improved thermal efficiency (28% better than earlier models)
  • Higher isolation rating (2300 V AC)

UR relays continuously monitor the health of the UR‑SHA using internal diagnostics. Any detected fault triggers:

  • Relay self‑test alarms
  • LED indications on the faceplate
  • Preventive maintenance notifications

Generational Improvements

The UR‑SHA belongs to the UR‑SH generation, replacing earlier modules:

Feature UR‑1H (Gen 1) UR‑RH (Gen 2) UR‑SHA (Gen 3)
Output Power 35 W 35 W 45 W
Isolation Voltage 2000 V AC 2000 V AC 2300 V AC
Heat Efficiency Standard Standard 28% improved
Over‑Temp Protection No No Yes (105°C shutdown)
Capacitor Count 27 electrolytic 27 electrolytic 1 electrolytic (high‑reliability design)
Input Voltage Range (DC) 88–300 V 88–300 V 88–400 V

Meaning of the “A” Suffix

In UR‑SHA, the suffix A indicates:

  • Horizontal 19‑inch rack format
  • Harsh‑environment protective coating

If the suffix were B, it would indicate:

  • Vertical ¾‑size rack format
  • Harsh‑environment coating

Frequently Asked Questions

Q: How is the UR‑SHA different from earlier UR power supplies? A: It provides higher output power (45 W), better efficiency, improved isolation, and over‑temperature protection.

Q: What does the “A” in UR‑SHA mean? A: It specifies a horizontal 19‑inch rack version with harsh‑environment coating.

Q: What voltage does the UR‑SHA supply to dry‑contact inputs? A: It provides 48 V DC for dry‑contact input circuits.

Field Installation Guidelines

  • Remove all control power before replacing the module.
  • Use ESD protection when handling modules.
  • Ensure the replacement module matches the relay’s order code (horizontal vs. vertical).
  • Verify connectors are fully seated before re‑energizing the relay.
  • Avoid mixing generations unless necessary; matching modules ensure consistent rail‑monitoring behavior.
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