SIRIUS coupling contactor, size S00 — 24 V DC, 10 A, spring terminals
The Siemens 3RT2017-2MB42-0KT0 is a SIRIUS coupling contactor in the size S00 frame, rated for 24 V DC coil voltage and 10 A at that rated value. Mounting is via screw or snap-on onto 35 mm DIN rail per DIN EN 60715, with the mounting position allowing ±180° rotation on a vertical surface and ±22.5° tilt forward/backward.
The 10 A rating at 24 V DC is the contactor's switching capacity at that coil voltage — it handles loads up to that current in DC circuits. The size S00 frame keeps the footprint compact: 45 mm wide, 70 mm high, 73 mm deep, so it fits tightly on a DIN rail in a crowded panel. The spring-type terminals reduce wiring time compared to screw clamps — no torque driver needed, just strip to the right length and push in. The mechanical life is rated at 30,000,000 operating cycles typical, with electrical switching frequencies varying by duty: up to 1,000 cycles/hour at AC-1, 750 at AC-2/AC-3, and 250 at AC-4.