Allen-Bradley 440R-EM4R2

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Allen-Bradley 440R-EM4R2 | Guardmaster Safety Relay Expansion Module (EM, 24V DC)

Overview

The Allen-Bradley 440R-EM4R2 is a Guardmaster expansion safety relay module crafted to enhance the output capacity of your safety system. Operating at 24V DC, it includes 4 N.O. immediate safety outputs, 1 N.C. single-wire safe input, 1 N.C. single-wire safe output, and 1 N.C. solid-state auxiliary output. The module is designed for DIN-rail mounting and features removable terminals for fast installation and maintenance.

It blends smoothly with other Guardmaster relays, providing adaptability and scalability in safety-critical applications.

Key Features

Expansion Module (EM) – Designed for use with Guardmaster safety relays
4 N.O. Immediate Safety Outputs – For direct activation of safety devices
1 N.C. Single-Wire Safe Input – Safe signal transfer
1 N.C. Single-Wire Safe Output – Permits daisy-chaining of safety logic
1 N.C. Solid-State Auxiliary Output – Immediate status indication
24V DC Operation – Standard for safety control circuits
Removable Terminals – Simple wiring and field replacement
Compact DIN-Rail Mount Design – Ideal for panel integration

Technical Specifications

Catalog Number: 440R-EM4R2
Type: Expansion safety relay module
Power Supply: 24V DC
Safety Inputs: 1 N.C. single-wire input
Safety Outputs: 4 N.O. relay outputs
Safe Output Pass-Through: 1 N.C. single-wire output
Auxiliary Output: 1 N.C. solid-state output
Mounting: DIN rail
Terminals: Removable
Operating Temperature: -5°C to +55°C
Standards Compliance: ISO 13849-1 (up to PLe), IEC 62061 (up to SIL 3)

Applications

Machine Safety Systems – For expanding safety output capabilities
Emergency Stop Circuits – Reliable relay switching
Industrial Equipment – Add-on for multi-device safety control
Safety Gate and Interlock Monitoring

Why Choose the 440R-EM4R2?

Seamless integration into Guardmaster systems
Flexible output expansion for safety functions
Supports safety certifications up to SIL 3 / PLe

Order Now

In stock and ready for fast global shipping. Ask about compatibility with your existing Guardmaster safety relay.

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