The Siemens 3RT1316-1AH00 is a SIRIUS power contactor in the compact S00 frame size — 45 mm wide, 57.5 mm tall, 72 mm deep — built for switching motor loads and resistive circuits in control panels. Four normally-open main contacts handle the power path; there are no NC main contacts on this variant. The contactor is rated for 4 kW at 400 V in AC-2 duty (slip-ring motors, moderate overloads) and the same 4 kW at 400 V in AC-3 duty (squirrel-cage motors, normal starting).
The 3RT1316-1AH00 carries a rated operational current of 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, and 0.3 A at 220 V. These are the contact ratings for the main circuit at those voltages — useful when switching control transformers or resistive heater loads at lower potentials, not just motor duty. The AC-12 rating (resistive loads at rated voltage) is 10 A, confirming the contactor can handle a full 10 A in non-inductive service.
Mounting, wiring, and protection class
The enclosure carries IP20 on the front and at the terminals — finger-safe but not washdown-rated, so keep it inside the panel, not out in the weather. Screw terminals accept solid or stranded copper: 2x 0.5…1.5 mm², 2x 0.75…2.5 mm², or max 2x 0.75…4 mm². Finely stranded wire needs a ferrule with core-end processing.