Allen-Bradley 700-ZBR100AZ1 Safety Relay Module

Allen-Bradley 700-ZBR100AZ1 Safety Relay Module is a compact, single-channel safety relay designed to monitor a single safety circuit and provide a guarded output for basic machine safety applications. It accepts either 24 V DC or 120 V AC input and is documented as having one monitored circuit. This catalog number is part of Allen-Bradley’s older 700-series safety relay family and was officially obsoleted on February 1, 2000, with a recommended replacement for E-stop and interlock applications: 440R-ZBL220Z24 for 24 V DC operation. In practice, the module is used to validate a safety input before enabling a machine output, forming a simple, hard-wired safety interface in small to mid-size automation systems. When upgrading older installations, refer to the 440R family for an equivalent solution that preserves the original safety logic and wiring practices, ensuring continued compliance with applicable safety standards in modern controls environments.