Main Product > > Siemens Industrial Control SIRIUS, central unit 3RK3 Basic for modular Safety system 3RK3 4/8 F-DI,1FRO,1 F-DO,24 V DC parameterizable using software Safety ES 45 mm width screw terminal Up to SIL3 (IEC 61508) Up to Performance Level E (ISO 13849-1) Technical Specification product brand name SIRIUS product category Modular Safety System[…]