The Siemens 3RT1316-1AU60 is a SIRIUS S00 power contactor with four normally-open main poles, rated for 4 kW at 400 V in AC-2 duty. It uses screw-type terminals for the main current circuit and snaps onto a 35 mm DIN rail per EN 50022. The IP20 finger-safe enclosure suits panel-mount installations where the contactor is protected inside a cabinet.
Ratings and coordination
The AC-2 rating (4 kW at 400 V) covers slip-ring motor switching where the contactor makes and breaks under load. For type of coordination 2 (high-fault withstand), the required upstream fuse is gL/gG 20 A; for type 1 coordination it is 35 A. Pollution degree 3 means the contactor is rated for industrial environments with conductive pollution, typical for control panels near machinery. The auxiliary contact block switches 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V — covering typical PLC-level control signals and small relay loads. The mechanical endurance is rated at 30,000,000 operating cycles, which aligns with the S00 frame's duty for frequent switching applications.
Mounting and integration
The 45 mm width and 57.5 mm height fit the S00 footprint. Side-by-side mounting is permitted with 6 mm spacing to adjacent devices. The screw terminals accept 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) stranded, up to a maximum of 2x (0.75 to 4 mm²) — sufficient for the 4 kW motor circuit. Ambient operating range is -25 to +60 °C, with a maximum operating altitude of 2,000 m.