Omron SR103AM02 Safety Relay

The Omron SR103AM02 Safety Relay is a dual‑channel safety monitoring relay in the SR1 family that provides robust, fault‑tolerant safety logic for guarding circuits. It delivers three Form A safety contacts (3PST) plus one auxiliary normally closed contact, with contact ratings of up to 3 A at 230 VAC (AC‑15) and up to 2 A at 24 V DC (DC‑13). Per channel, inputs support configurations of 1 NC or 2 NC or two solid‑state inputs (including light‑curtain interfaces), with an input impedance up to 800 Ω per channel. Key safety specifications include a 2500 V impulse withstand voltage, and a drop‑out time of 12 ms (75 ms if the supply is removed). Reset behavior can be configured as Monitored manual (S11–S21) or automatic/manual (S12–S21), with contact monitoring via the S11/S12–S21 loop. The 115 VAC input variant is DIN‑rail mountable on a 35 mm rail and measures about 114 × 225 × 99 mm, designed for easy integration in machine guard and interlock applications. An internal fuse supports 6 A quick‑acting or 4 A slow‑acting protection for the output, ensuring quick fault isolation in safety circuits. This model is specifically the SR103AM02 variant, targeting 115 VAC operation within the SR1 safety relay lineup.