URSHA | GE Multilin UR Series Power Supply Module

Product Overview

The GE UR-SHA is a third-generation Power Supply Module from GE Multilin, designed for the UR Series Universal Relay platform. This high-power module delivers a nominal power rating of 125 to 250 V (AC/DC), making it ideal for demanding substation and industrial power applications. The UR-SHA replaces the first-generation UR-1H and second-generation UR-RH power supply modules with significantly improved performance and reliability.

The UR-SHA provides 48 V DC power to dry contact input connections and features built-in diagnostics with LED indicators on the faceplate for real-time operational status monitoring. It includes overtemperature protection that shuts off the module at 105°C, ensuring safe operation in harsh environments.

Key Features

• High power output: 45W (upgraded from 35W in previous generations)
• Wide input voltage range: 125–250 V nominal (AC/DC)
• 48 V DC dry contact input power supply
• 28% improved efficiency over previous generations with minimized heat emission
• Isolation voltage: 2300 V AC (upgraded from 2000 V AC)
• Overtemperature protection with automatic shutoff at 105°C
• Built-in diagnostics for hardware health monitoring
• LED faceplate indicators for power status and fault detection
• Replaces UR-1H (1st gen) and UR-RH (2nd gen) power supplies

Technical Specifications

Applications

• Substation automation — reliable power for protection relays
• Power generation — generator and transformer protection systems
• Transmission and distribution — feeder and line protection
• Industrial power systems — motor and breaker control
• Harsh environment installations — with harsh environmental coating

Compatibility

The UR-SHA is fully compatible with the GE Multilin UR Series universal relay family. It is designed to replace the UR-1H (1st generation) and UR-RH (2nd generation) power supply modules. The "A" suffix indicates a horizontal 19-inch rack with harsh environmental coating.

Installation Guide

1. Power Down: Completely de-energize the UR relay chassis. Never install or remove modules while energized.
2. ESD Protection: Wear a grounded ESD wrist strap before handling the module.
3. Slot Verification: Confirm the power supply slot position per the relay manual.
4. Module Insertion: Slide the UR-SHA into the designated power supply slot, aligning the rear connector with the backplane.
5. Secure Mounting: Tighten the faceplate retention screws.
6. Wiring: Connect input power and dry contact wiring per the UR series wiring diagram.
7. Verification: Power on and verify LED indicators show successful operation.

FAQ

Q: How is the UR-SHA different from previous generations?
A: The UR-SHA is the 3rd generation power supply with 45W output (vs. 35W), 28% improved efficiency, 2300 V AC isolation (vs. 2000 V AC), and overtemperature protection at 105°C.

Q: What does the "A" suffix mean in UR-SHA?
A: The "A" indicates a horizontal 19-inch rack mount with harsh environmental coating. "B" would indicate a vertical 3/4 size mount.

Q: What voltage does the UR-SHA provide for dry contacts?
A: The UR-SHA provides 48 V DC power for dry contact input connections.

Q: Is the UR-SHA compatible with all UR relays?
A: Yes, the UR-SHA is compatible with all UR Series Universal Relays. It replaces both UR-1H and UR-RH modules.

Selection Tips

• Choose UR-SHA for high-voltage applications (125–250 V AC/DC) requiring 45W output.
• For low-voltage applications (24–48 V DC), consider the UR-SHB or other low-range power supplies.
• For redundant power, verify if your relay chassis supports dual power supply configurations.
• Always verify input voltage requirements match your substation power standards.

Ordering Information