Allen-Bradley 440C-CR30-22BBB Guardmaster Safety Relay

Allen-Bradley Guardmaster 440C-CR30-22BBB is a software-configurable safety relay (CR30) that centralizes safety logic for machine guarding in industrial environments. Catalog number 440C-CR30-22BBB; it provides 22 embedded safety I/O points and two plug-in slots for expandability, all operating from a 24 V DC supply. Rated to PL e and SIL 3, it supports configuring safe operation of guarding devices such as interlocks, safety gates, and emergency stops through the CCW-connected components software on a PC. The unit includes an embedded serial port and a USB programming port to program, diagnose, and update the safety logic and parameters. This CR30 module is designed to be configured via Connected Components Workbench (CCW) on a Windows PC, enabling tailored safety routines and monitoring, and it is part of Rockwell Automation's Guardmaster safety-relay family, intended for use in applications where reliable, verifiable safety logic is required. With two plug-in slots, it provides room for additional I/O and safety functionality without replacing the base relay, making it suitable for mid-range safety circuits in packaging, materials handling, or manufacturing lines.