Scientific Technologies STI SR103AM01 Safety Relay

Omron SR103AM01 Safety Monitoring Relay (often sold under the STI/Scientific Technologies label as SR103AM01) is a three‑pole safety relay that governs safety inputs and provides three Form‑C outputs for safe control circuits. Each contact is rated to 3 A and the unit accepts 24 V AC or DC control voltage (with 115 V variants also supported on the family), enabling reliable integration with e-stops, door interlocks, and guarded access devices. The module features IP20 terminals and an IP40 housing for panel mounting in industrial environments, and operates from -15 to 40°C with up to 93% RH at 40°C. It is CE‑marked and UL/cUL listed, with TÜV Rheinland certification, and conforms to EN 60204-1 and EN 954-1 (Cat 4 in SR103 internal operation) safety standards. With its compact footprint and tri‑channel safety monitoring, the SR103AM01 is suited for redundant safety circuits where 24 V control logic drives multiple safety devices, providing a singular, centralized monitor for machine safeguarding.