Allen-Bradley 440R-N23126 Single Function Safety Relay

Allen-Bradley engineers the 440R-N23126 as a robust single-function safety relay in the Guardmaster 440R series. Maintenance teams deploy it for secure emergency stop circuits in automated lines. Furthermore, Rockwell Automation's design prioritizes seamless integration with light curtains and sensors.

Key Technical Specifications

The 440R-N23126 incorporates precise components for dependable operation. Here are its detailed parameters:

• Model Type: MSR127RP/TP for monitoring safety functions effectively.

• Power Supply: 24V AC/DC nominal, 50/60 Hz with broad tolerance.

• Safety Outputs: 3 normally open (N.O.) immediate contacts for actuators.

• Auxiliary Outputs: 1 normally closed (N.C.) for signaling and monitoring.

• Inputs: 1 N.C. for E-stop, 2 N.C. for light curtain or dual-channel devices.

• Contact Rating: 5A at 250V AC (AC-15), 3A at 24V DC (DC-13), 0.1 Hz max.

• Reset Mode: Automatic/manual selectable for flexible fault recovery.

• Terminals: Fixed screw-type, accepting 0.34–2.5 mm² wire sizes.

• Dimensions: 22.5 mm width, 100 mm height, 121 mm depth on DIN rail.

• Weight: 0.23 kg net, easing installation in control panels.

• Mounting: 35 mm DIN rail (TS35) for standard enclosure compatibility.

• Certifications: CE, cULus, BG for global safety compliance.

• Operating Temp: -10°C to +55°C with 0–95% non-condensing humidity.

• Enclosure Protection: IP20 rating against solid objects over 12 mm.

Performance and Safety Features

First, operators activate the 440R-N23126 through dual-channel inputs for Category 4 performance. It de-energizes outputs instantly upon fault detection. Additionally, manual reset allows verified restarts after interlocks clear.