GE Multilin UR4AH

Product Overview

The GE Multilin UR4AH is a 4A Solid-State Input/Output Module designed for the GE Multilin Universal Relay platform. Industrial parts references identify UR4AH specifically as a solid-state I/O module for GE Multilin UR equipment.

The module is part of the modular UR hardware architecture. GE describes the UR family as a common modular platform with expandable I/O, integrated monitoring and metering, high-speed communications, and programmable control functions.

For maintenance teams, the UR4AH can therefore serve as a replacement component when the corresponding I/O section of a compatible Multilin relay requires repair or renewal.

Technical Parameters

Parameter	Details
Manufacturer	GE Multilin
Model	UR4AH
Product Type	Solid-State Input/Output Module
Module Rating / Designation	4A
Product Family	Multilin UR
Hardware Type	Modular I/O component
Main Function	Solid-state input/output interface
Application	Protection, control and automation
Installation	Compatible UR relay system

The exact I/O quantity, electrical ratings, terminal arrangement, and compatibility depend on the complete UR relay order code and hardware configuration. These details should be confirmed against the applicable GE documentation before replacement.

Key Features

• Designed for the GE Multilin UR family
• Solid-state input/output architecture
• Modular hardware construction
• Supports protection and control applications
• Suitable for industrial and utility installations
• Useful for maintenance and replacement
• Integrates with the wider UR relay platform

Construction and Function

The UR4AH is a dedicated electronic I/O assembly rather than a standalone protection relay. Its circuitry provides an interface between the UR relay and external control signals.

The modular architecture is one of the strengths of the UR platform. GE notes that its UR products use common modular hardware and expandable I/O, which can simplify maintenance and spare-parts management.

Applications

The UR4AH can be used in compatible Multilin UR installations for applications such as:

• Utility substations
• Industrial power systems
• Generator protection
• Transformer protection
• Feeder protection
• Motor control
• Electrical automation
• Protection and control panels

The broader UR family supports generator, transformer, transmission-line, distribution, motor, monitoring, metering, and control applications.

Installation and Maintenance

Before replacing the UR4AH, isolate the relay and follow the site's electrical safety procedures. Confirm the complete relay order code and verify that the replacement module matches the original hardware configuration.

Next, inspect terminal connections and external wiring. During handling, use suitable ESD precautions. After installation, check the relay configuration and verify the operation of the associated inputs and outputs.

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