Siemens Sirius 3SK1 Safety Relay

SIRIUS safety relay Output expansion 4RO with relay activating circuit 4 NO contacts plus Relay signaling circuit 1 NC contact Us = 24 V DC Spring-type terminal (push-in) Output expansion SIRIUS 3SK1 for safety relays. 3SK output expansions are used to supplement base units with additional safe outputs with a switching capacity of up to 10 A. They can be connected to each 3SK base unit via wires. All devices with a 24 V DC control power supply can also be connected to 3SK1 and 3SK2 Advanced base units using 3ZY12 device connectors. The units have four (AC-15 5 A) or three (AC-15 10 A) fail-safe outputs. There is a choice between a control power supply of 24 V or a wide voltage range. Available with screw or spring terminals (push-in) across the board. 3SK safety relays replace the proven 3TK28 series. Safety is a SIRIUS business.