The Siemens SIRIUS 3RT2027-2NP30-ZX95 is a size S0 power contactor with a 200-280 VAC coil and spring-type terminals on the main and auxiliary contacts. It mounts on 35 mm DIN rail per DIN EN 60715 via screw or snap-on, fitting a 45 mm wide slot in the panel.
The contactor occupies a 45 mm wide footprint, 102 mm tall, 107 mm deep — that's a standard S0 envelope. Spring-type terminals accept solid or stranded wire from 1 to 10 mm², with dual 0.5-2.5 mm² on the auxiliary side. Clearance: 10 mm upwards, downwards, and forwards; 6 mm at the side. Mounting position allows ±180° rotation on a vertical surface and ±22.5° tilt forward/backward.
Rated for AC-1 duty at up to 1,000 operations per hour, AC-2 and AC-3 at 750, and AC-4 at 250. The coil draws an inrush peak of 25 A; holding power at 50 Hz is 0.51 VA, at 60 Hz 0.56 VA. Arcing time is 10 ms. Mechanical life is typical 10 million operations. Operating temperature range -25 to +60 °C; storage -55 to +80 °C.