The 3RH6911-1DA02: The 6 kV surge withstand voltage means the contact gap is sized for industrial control circuits where inductive kickback is the norm, not an exception. The 10 A rated value at 24 V is the thermal continuous current of the contact block itself; the AC-15 figures govern the switching life when driving magnetic loads.
Mirror contact and contact reliability for safety circuits
The normally closed (NC) contact on this switch is a mirror contact per IEC 60947-4-1. That means the NC position is mechanically linked to the NO position so that when the NO welds shut, the NC cannot close — a requirement for safety-related feedback in emergency-stop and guard-monitoring circuits up to SIL 3 / PL e.
DIN-rail footprint and panel integration
At 10 mm wide and 66 mm deep, this is a single-width S00 auxiliary switch block that snaps onto the DIN rail directly. It is designed as the first laterally mountable block — it clips onto the left side of a SIRIUS contactor or contactor relay without additional hardware, adding one or two contact sets without expanding the panel width beyond the contactor's own footprint. The IP20 front protection means the terminals are finger-safe when wired, but the block is intended for inside an enclosure, not exposed to washdown.