UR8MH Module | GE Multilin Digital Input/Output Expansion

GE Multilin UR8MH Digital I/O Module – Product Description

Overview 

The GE Multilin UR8MH is a digital input/output expansion module designed for the UR Series Universal Relays. It provides precise, programmable digital inputs and outputs to enhance protection, control, and automation capabilities. Moreover, the module ensures reliable operation in industrial environments, supporting generator, transformer, motor, and line protection systems. It is fully compatible with UR chassis and CPU modules, allowing flexible system expansion.

Technical Specifications

Attribute — Specification
Model Number — UR8MH
Type — Digital Input/Output Module
System Compatibility — GE Multilin UR Series (Universal Relays)
Functions — Provides programmable digital inputs and outputs
Inputs — Multiple optically isolated digital inputs (typical 24 VDC nominal)
Outputs — Form‑C relay outputs (8 A @ 250 VAC / 30 VDC)
Isolation — Galvanic isolation between I/O channels and CPU
Weight — 0.7 kg
Dimensions — Standard UR chassis module size (6 × 4 in) / 3.8 × 11.5 × 4.5 cm
Operating Temperature — –40 °C to +70 °C
Storage Temperature — –40 °C to +85 °C

FAQ

Q1: What is the main purpose of the UR8MH module?
It provides programmable digital inputs and outputs to expand UR relay capabilities.

Q2: Can UR8MH handle both inputs and outputs simultaneously?
Yes, it supports multiple digital inputs and Form‑C relay outputs concurrently.

Q3: Is the UR8MH suitable for harsh industrial environments?
Yes, it operates reliably from –40 °C to +70 °C and features a rugged design.

Q4: Which relays are compatible with the UR8MH module?
It is compatible with all GE Multilin UR Series relay chassis and CPU modules.

Q5: Can UR8MH be used for breaker management and interlocking?
Yes, it is specifically designed to support breaker control, alarms, and interlock schemes.