The Siemens 3RT7026-1AP00 is a SIRIUS size S0 contactor with three main poles, rated for AC-3 switching up to 690 V. It carries a 3 NO main contact configuration and screw-type terminals on both main and auxiliary circuits. The control supply is AC, and the coil holding power draws 0.24 W DC. This is a current-production part — lifecycle stage is active.
Mounting and panel integration
Fastens via screw or snap-on onto a 35 mm DIN rail per EN 50022. The S0 footprint — 45 mm wide, 85.5 mm tall, 91 mm deep — fits standard panel layouts. Side-by-side mounting is permitted, so you can gang multiple contactors without extra spacing. Mounting position allows ±180° rotation on a vertical surface and ±22.5° tilt forward/backward.
Electrical ratings and what they mean for fit
The AC-3 maximum operating voltage of 690 V covers 400 V and 480 V motor circuits common in European and North American panels. For DC-13 loads at 220 V, the contactor is rated 0.3 A — relevant for switching DC solenoids or brake coils in the same panel. The auxiliary contacts are rated for PLC-level signals (17 V, 5 mA), so they interface directly with a 24 VDC input card without a separate interposing relay. Pollution degree 3 suits industrial environments with conductive dust or humidity.