SIRIUS S0 Power Contactor – 3RT1026-1AN60
The Siemens 3RT1026-1AN60 is a SIRIUS S0 frame power contactor, designed for switching motor loads in industrial control panels. It mounts via screw or snap-on onto 35 mm DIN rail per EN 50022, fitting into a 45 mm wide slot — standard for the S0 footprint. Rated for 11 kW at 400 V in AC-2 duty and 11 kW at 500 V / 690 V in AC-3, this contactor handles common 3-phase induction motors up to that power class. The AC-4 rating at 400 V is 15.5 A, covering reversing or inching applications where the contactor makes and breaks stalled rotor current. Operating temperature range is -25 to +60 °C, with a maximum altitude of 2000 m and pollution degree 3 — suitable for most industrial environments without derating for standard conditions.
Mounting and Integration
The 45 mm width and 85 mm height fit into the S0 panel cutout common across the SIRIUS 3RT1 series. Depth is 91 mm, which includes the arc chamber and screw terminals — allow clearance for wire bending radius when laying out the gland plate. Screw-type terminals on the main circuit accept solid conductors 2x (0.5…1.5 mm²), 2x (0.75…2.5 mm²), max 2x (0.75…4 mm²), and stranded conductors 2x (1…2.5 mm²), 2x (2.5…6 mm²), max 2x 10 mm². AWG equivalents are 2x (16…12), 2x (14…10), 1x 8. This covers most panel wiring up to 10 mm² without lugging. Side-by-side mounting is permitted with a 6 mm gap at the side, and front protection is IP20 while the terminal area is IP00 — standard for enclosed contactors. For washdown or dust environments, plan an enclosure around the panel.
Switching Capability and Coordination
For DC switching, the contactor is rated at 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, and 0.3 A at 220 V — resistive loads assumed. For AC loads, it handles 6 A at 230 V and 3 A at 400 V (likely AC-1 resistive). The AC-12 maximum operating current is 10 A. Type 2 coordination (no weld) requires a gL/gG fuse rated 35 A. Type 1 coordination (welding allowed but no fire risk) permits a 100 A gL/gG fuse. These values guide the upstream short-circuit protection selection for the motor branch circuit. Mechanical life is typical 10 million operations — suitable for high-cycle applications like conveyors or pumps where the contactor cycles with every start.