GE Multilin UR4LH | Relay I/O Expansion Module for UR Series

GE Multilin UR4LH Digital I/O Module – Product Description

Overview

The GE Multilin UR4LH Digital I/O Module is designed to expand the digital input and output capabilities of UR Series universal relays. It provides operators with flexible configuration options for monitoring and controlling breakers, alarms, and interlocks. Moreover, the module ensures reliable signal communication between field devices and CPU modules, enabling seamless integration into complex automation schemes.

Built with industrial-grade components and a rugged design, the UR4LH maintains stable performance in harsh utility and industrial environments. Therefore, it supports critical functions such as breaker management, interlocking, and relay automation without compromising reliability.

Technical Specifications

General Information

• Model Number: UR4LH

• Product Type: Digital Input/Output Module

• System Compatibility: GE Multilin UR Series (Universal Relays)

• Weight: 0.7 kg

• Dimensions: Standard UR chassis module (6 × 4 in)

• Manufacturing Location: Canada (GE Multilin facility, Ontario)

I/O Functions

• Inputs: Optically isolated digital inputs, nominal 24 VDC

• Outputs: Form-C relay outputs (8 A @ 250 VAC / 30 VDC)

• Isolation: Galvanic isolation between I/O channels and CPU

Environmental Specifications

• Operating Temperature: –40 °C to +70 °C

• Storage Temperature: –40 °C to +85 °C

FAQ

Q1: Can the UR4LH module be used with all UR relay CPU modules?
Yes, it is fully compatible with UR Series CPU modules and chassis.

Q2: How many digital inputs and outputs are provided?
It provides multiple programmable digital inputs and Form-C relay outputs with galvanic isolation.

Q3: Is the module suitable for outdoor substations?
Yes, its –40 °C to +70 °C operating range ensures reliable performance in extreme conditions.

Q4: Can this module manage breaker interlocking?
Absolutely. It supports interlocking, automation, and status monitoring in protection schemes.

Q5: How is the module installed?
The UR4LH fits standard UR chassis slots, allowing easy integration and replacement without additional hardware.