SIRIUS 3RT2026-1AD00 — S0 frame power contactor, 24 VDC coil
The Siemens SIRIUS 3RT2026-1AD00 is a Size S0 power contactor rated for motor switching and general resistive loads. The 24 VDC coil pulls in at 10 A inrush per the datasheet, holding steady at the rated voltage. Screw-type coil terminals accept solid or stranded conductors from 1 to 10 mm² — strip length and ferrule sizing per the terminal spec.
Duty ratings and switching frequency
AC-3 motor switching is rated at 21 A at 480 V, which covers most 10–15 hp three-phase induction motors in that voltage class. AC-1 resistive load rating reaches 40 A at 400 V. Maximum switching frequency varies by duty: 1000 cycles/hour for AC-1, 750 cycles/hour for AC-2 and AC-3, and 250 cycles/hour for AC-4 (plugging or inching). The AC-3e rating matches the standard AC-3 figure at 750 cycles/hour.
Mounting and clearances
Snap-on mounting onto 35 mm DIN rail per EN 60715, or screw-fixed to the panel backplate. The S0 frame occupies 45 mm width on the rail. Minimum clearance to adjacent devices: 10 mm upwards, 10 mm downwards, 10 mm forwards, 6 mm at the sides. Mounting position allows ±180° rotation on a vertical surface and ±22.5° tilt forward/backward.
Environmental limits
Operating temperature range is -25 to +60 °C. Storage range extends from -55 to +80 °C — the storage limit governs handling and warehousing, not running conditions. Mechanical endurance is rated at 10 million typical operations.