The Siemens 3RN1000-2AG00 is a compact thermistor motor protection evaluation unit from the SIRIUS family, designed to monitor PTC thermistor sensors embedded in motor windings.
The 110 V AC supply rating is fixed — not a wide-range input. If your control voltage is 24 V DC or 230 V AC, this unit won't power up. The single CO contact (1 form C) is the only output; there are no additional NO or NC auxiliary contacts.
Depth is 91 mm, height 84 mm. No extra clearance needed beyond the usual ventilation gaps for a device drawing under a few VA.
Compliance Notes
The part carries a substance prohibitance date of 05/28/2009, referencing RoHS or similar restricted-substance compliance. IP20 protection means it is suitable for dry, clean panel environments — not for washdown or dust-laden areas.