Panel fit and contact ratings
The 3RH2344-1CG60-0KA0 is a SIRIUS auxiliary contactor in size S00, carrying four instantaneous normally-open contacts — that is the contact arrangement you need for signal-level switching in a control circuit, not a main power loop. The arcing time sits between 10 and 15 ms, which means the downstream PLC input filter or safety relay must tolerate that pulse width before the contact settles — a 3 ms hardware debounce will miss the bounce but catch the arc as a valid edge.
Degree of pollution 3 per IEC 60947-1 means the contactor tolerates conductive pollution (dust with moisture) typical in unsealed panel environments — no conformal coating required for normal factory air. RoHS compliance date listed as 07/01/2006, indicating the part meets the EU RoHS directive effective from that date — no lead, mercury, cadmium, or restricted phthalates in the construction.