Allen-Bradley 440R-N23132 Guardmaster Safety Relay

Allen-Bradley Guardmaster 440R-N23132 is the MSR127TP-based safety relay module designed to guard industrial control circuits. It is powered from 24V AC or 24V DC and provides three safety outputs (normally open) plus one auxiliary contact, with inputs configured for three input signals and three outputs for straightforward integration with guards, emergency stops, and safety light curtains. The unit features removable screw terminals and a compact 22.5 mm-wide case, making panel mounting and wiring more convenient in small to mid-size control panels. As part of the Guardmaster family, the 440R-N23132 variant identifies a dedicated safety relay configuration built to monitor safety devices and reliably actuate safe-stop sequences in automation environments. This module is commonly used to supervise safety interlocks and other protective devices, providing a compact, self-contained solution that ties safety hardware to the control logic without requiring complex external equipment.