Part identity and fit
The Siemens 3RH2244-2BD80 is a SIRIUS auxiliary contactor, size S00, with four normally-open instantaneous contacts and a 115 V DC coil.
Switching capacity and contact ratings
The 4 NO contacts are rated for switching at various DC voltages: 10 A at 24 V, 4.7 A at 60 V, 3 A at 110 V, 1.2 A at 220 V, and 0.26 A at 600 V. For AC loads, the contacts handle 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V. These ratings define the maximum continuous current the contacts can make and break at the respective voltage levels — important when matching to the load's inrush and steady-state draw.
Coil and mechanical data
The contactor is rated for 10,000,000 mechanical operations typical, with a maximum switching frequency of 10,000 1/h at AC.