Safety Technology International CM-S31SCC5 Safety Interlock

The CM-S31SCC5 Safety Interlock is a stainless-steel, 2-wire coded magnetic safety interlock switch in Omron’s CM family, pre-wired with a 5 m lead and an 8-pin M12 connector. Designed for machine guarding, it features a current-sensing circuit with a safety contact and is rated for up to 300 mA at 24 V, making it suitable for integration with safety monitoring relays. The unit’s 316 stainless steel housing measures roughly 28 mm wide by 53 mm long by 13.5 mm high, and it weighs about 230 g. It is IP67-rated (dust-tight and waterproof) and intended for harsh environments, with an operating temperature range of -10°C to 55°C. Mounting is via two M4 screws, and the active sensing gap is about 5–7 mm (with off-state 8–12 mm) for dependable door-guard operation. The CM-S31SCC5 is commonly referenced as 44536-3159 in cross-reference catalogs and is compatible with STI/Omron safety relays that accept CM-series 2-wire interlocks with a 5 m cable and M12 connectivity. This part is suited for enclosure doors, machine guards, and access points where reliable interlock signaling and environmental resistance are required.