• Allen-Bradley 440R-N23114 MSR126.1T
  • Allen-Bradley 440R-N23114 MSR126.1T
  • Allen-Bradley 440R-N23114 MSR126.1T
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Allen-Bradley 440R-N23114 MSR126.1T Guardmaster Safety Relay

Allen-Bradley 440R-N23114 MSR126.1T Guardmaster Safety Relay

The Allen-Bradley 440R-N23114 MSR126.1T is a dual-channel safety monitoring relay from the Guardmaster series. It is designed to provide reliable safety control for industrial applications, including the monitoring of emergency...

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SKU: 440R-N23114 MSR126.1T
Vendor: Allen-Bradley
Category: Safety Relay
Related Series:

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The Allen-Bradley 440R-N23114 MSR126.1T is a dual-channel safety monitoring relay from the Guardmaster series. It is designed to provide reliable safety control for industrial applications, including the monitoring of emergency stop buttons, safety gates, and light curtains. This unit features dual-channel input capability with integrated cross-fault detection to ensure high levels of safety integrity.

Features

  • Category 4 per EN 954-1 and SIL 3 per IEC 61508 compliance
  • Stop category 0
  • 2 Normally Open (N.O.) safety outputs
  • 2 Normally Closed (N.C.) auxiliary outputs
  • Dual-channel operation with cross-fault monitoring
  • Configurable automatic or manual reset
  • Compact 22.5 mm enclosure design

Applications

  • Automotive & Tire Manufacturing: Monitoring E-stops and light curtains on robotic welding cells and presses.
  • Food & Beverage Facilities: Safety monitoring for high-speed packaging, bottling, and protein lines.
  • Life Sciences & Pharmaceuticals: Safety interlocking for serialization and packaging machinery.
  • Metal & Mining Operations: Protection for safety gates and E-stops on lathes, conveyors, and mineral processors.
  • Warehouse & Fulfillment Centers: Personnel protection for sorters and palletizers.

Technical Specifications

Model 440R-N23114 MSR126.1T
Power Supply 24V AC/DC
Inputs Dual Channel
Safety Outputs 2 N.O.
Auxiliary Outputs 2 N.C.
Max Thermal Current (Ie) 1 x 6A, 2 x 4A
Min Switched Current/Voltage 10mA / 10V
Contact Rating DC-13 6A / 24V DC, 0.1Hz
Reset Type Automatic / Manual
Enclosure Width 22.5 mm
Terminals Fixed

Installation Guidelines

  • Ensure the power supply is disconnected before performing any wiring or installation.
  • Mount the relay on a standard DIN rail within a suitable industrial enclosure.
  • For dual-channel applications, ensure correct wiring to S11-S12 and S21-S22 to enable cross-fault detection.
  • Maintain proper clearance around the unit to ensure adequate ventilation and cooling.
  • Use shielded cables for safety input signals to minimize interference in high-EMI environments.
  • Verify that the feedback loop is correctly wired if using manual reset mode.

FAQs

What is the 440R-N23114?

The Allen-Bradley Guardmaster MSR126.1T (Cat. No. 440R-N23114) is a 24V AC/DC, dual-channel safety relay designed for monitoring safety gate interlocks, E-stops, and light curtains.

Does the 440R-N23114 support cross-fault monitoring?

Yes. When used in a 4-wire connection (S11-S12, S21-S22) for dual-channel safety inputs, the MSR126.1T performs cross-fault detection across the inputs.

What is the required input wiring for 2-channel?

The 440R-N23114 is designed to monitor two normally closed (N.C.) inputs, typically connected to terminals S11-S12 and S21-S22.