ABB OSS603 OpenSafety Relay Module

ABB OSS603 OpenSafety Relay Module is a safety-relay device within ABB’s OpenSafety architecture, designed to provide safe, monitored relay outputs that drive safety-related actuators in guarding and stop circuits. The OSS603 designation places it in ABB’s OpenSafety family, which enables integration with OpenSafety controllers and safety I/O networks to coordinate protective devices, emergency stops, and guarding sensors. The module functions as a safety relay component within ABB’s safety ecosystem, allowing discrete safety functions to be implemented via relays that separate safe and non-safe circuits and wired to compatible safety controllers. ABB’s documentation references OSS603 in contexts of safety assemblies and related modules, underscoring its role in OpenSafety deployments. Typical deployments include machinery safety systems where a controlled, fail-safe switch output is required to initiate actuator shutdowns or trigger protective interlocks under safety logic processed by an OpenSafety controller or compatible safety PLC. While exact electrical ratings, channel counts, and mounting options vary with the OSS603 variant and configuration, the module is positioned as part of ABB’s safety relay lineup for OpenSafety applications.