Siemens SIRIUS 3RT1325-3XB40-0LA2 — Power Contactor, Size S0, 24 VDC Coil
For AC-12 resistive loads, the maximum operating current is 10 A. The DC coil draws 6 W on pickup and holds at 5.4 W — a standard holding-power reduction that keeps the coil temperature rise within the S0 frame's thermal budget. The varistor is factory-fitted, so no external suppression is needed for the coil circuit.
Dimensions are 61 mm wide, 119 mm high, 100 mm deep.
Switching Capacity and Coordination
Rated operational currents by voltage and duty: 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V (likely DC-13 or similar inductive DC switching). For AC loads: 6 A at 230 V and 3 A at 400 V (AC-3 or AC-4 duty). For Type 1 coordination (fault clearing with contactor replacement allowed), the fuse can be gL/gG 63 A. These values guide the branch-circuit protection selection.
Terminal Data and Wiring
Main circuit screw terminals accept 2x (0.25 to 2.5 mm²) solid, 2x (1 to 2.5 mm²) stranded, 2x (2.5 to 6 mm²) stranded, or max. 2x 10 mm². AWG equivalents: 2x (20 to 16) solid, 2x (18 to 14) stranded, 1x 12. The auxiliary/solid terminal entry is 2x (0.25 to 2.5 mm²).
Environmental and Protection Ratings
The terminal area is rated IP00 (no protection). The contactor is designed for indoor, pollution-degree-2 environments typical of control panels.