Auxiliary switch block for 3RT2/3RH2
The Siemens 3RH2911-1XA31-0MA0-Z W98 is an auxiliary switch block that mounts on the front of 3RT2 contactors and 3RH2 contactor relays. It provides three normally-open and one normally-closed auxiliary contact, wired via screw terminals. This is the multi-unit packaging variant, supplied as a pack of 60 pieces. The contact configuration — 3 NO + 1 NC — is arranged as current paths 53/54 (1 NO), 61/62 (1 NC), 73/74 (1 NO), and 83/84 (1 NO). This gives you three make contacts for signaling or interlocking and one break contact for status feedback or safety chain isolation.
Lifecycle and compliance
RoHS compliance is confirmed since October 1, 2009, and REACH candidate list information is available on request. Export control classifications are AL: N / ECCN: N, so no special licensing is required for cross-border shipment.
Panel integration notes
The block clips onto the front of the contactor or relay without additional hardware. Screw terminals accept solid or stranded copper; torque to the contactor manufacturer's specification for the main power terminals. The multi-unit pack of 60 is intended for panel builders running multiple identical starters — order one line item and get a consistent batch for the build.