The Siemens 3RT2626-1AB05 is a SIRIUS capacitor contactor in the S0 frame size, designed for switching capacitive loads in power factor correction banks. It carries a 24 VAC 50 Hz coil with screw-type terminals and mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 50022 — standard panel integration for a PFC cabinet.
Switching ratings and what they mean for the buyer
The contactor is rated for capacitor switching at 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V — these are the AC capacitor-duty currents that govern real-world fit, not a generic resistive rating. The 24 V coil draws its rated voltage at 50 Hz; the operating range spans -25 to +60 °C ambient, with storage from -55 to +80 °C. The arcing time is 10 ms, and the mechanical switching frequency tops out at 100 operations per hour at 230 V through 690 V.
Wiring and mounting
Terminals accept solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm². Stranded: 2x (1 to 2.5 mm²) or 2x (2.5 to 10 mm²). A single 10 mm² conductor fits at 40 °C; two 10 mm² at 60 °C. The 45 mm width and 135 mm height fit standard DIN-rail spacing; depth is 155 mm. Mounting position allows ±180° rotation on a vertical surface and ±22.5° tilt forward/backward.