The Siemens 3RH1911-1FA02-ZX95 is a SIRIUS auxiliary switch block with 2 NC contacts, designed for use with contactor relays and power contactors in the S00 frame size. It snaps onto the contactor via the standard DIN-rail mount, adding auxiliary switching capacity without extra panel wiring. Rated for a maximum of 10 A, it handles a range of control voltages: 6 A at 24 V, 6 A at 125 V, 6 A at 230 V, 3 A at 400 V, and 0.3 A at 220 V. The AC-15 rating at 690 V is 1 A, which covers the typical inductive load of a contactor coil or small solenoid.
This order code is a phased-out product. The official successor is the SIRIUS 3RH2 series.
Snap-on mounting to the contactor or relay. Screw-type terminals accept 2x (0.5...1.5 mm²) or 2x (0.75...2.5 mm²) with core-end processing, or 2x (20...16) and 2x (18...14) AWG.
Contact reliability and service life
Rated for 10 million mechanical switching cycles typical.