The Siemens 3RH2131-2FB40-1AA0 is a SIRIUS auxiliary contactor in size S00, carrying 3 normally open instantaneous contacts and a 24 VDC coil with an integrated diode surge suppressor. Rated operational current varies with voltage: 10 A at 24 V and 230 V, 3 A at 110 V and 400 V, 2 A at 500 V, 1 A at 690 V, 4.7 A at 60 V, 1.2 A at 220 V, 0.5 A at 440 V, and 0.26 A at 600 V. These figures define the contact load capacity across control and auxiliary circuits in different supply regimes. Mechanical endurance: 30 million cycles. Maximum switching frequency at AC: 10,000 1/h. Arcing time: 10 to 15 ms. Closing power of magnet coil at DC: 4 W.
The product carries a substance prohibition date of 10/01/2009, indicating RoHS compliance per the original directive. Pollution degree 3 suits industrial environments with conductive or dry non-conductive pollution.
Panel Fit & Integration
Dimensions: 73 mm deep, 45 mm wide, 70 mm high. The 45 mm width occupies one standard 45 mm slot on a DIN rail — important for panel fill-factor planning. The integrated diode surge suppressor on the DC coil eliminates the need for external free-wheeling diode wiring — one less component to install and verify in the panel.