Siemens 3SK1111-1AB30 Safety Relay 3NO 1NC 24V DC

Siemens 3SK1111-1AB30 is a SIRIUS safety-relay basic unit with three normally open contacts and one normally closed contact, designed to interlock and monitor safety circuits in industrial machinery. The coil is 24 V AC/DC and it wires via screw terminals, making it straightforward to integrate into control systems. As part of the Basic/SIRIUS Standard series, this 3NO/1NC device can drive multiple safety outputs for functions such as emergency-stop interlocks, safety gates, and protective-stop circuits. The enclosure carries IP20 protection and is intended for DIN-rail mounting inside a control cabinet. For exact per-output ratings and total current capability, refer to the official Siemens datasheet for 3SK1111-1AB30.