SIRIUS 3RT1036-3XF00-0GA0 — Size S2 Power Contactor, Screw Terminals
This is a Siemens SIRIUS power contactor in Size S2, order code 3RT1036-3XF00-0GA0, with screw-type terminals for the main current circuit. It's rated for motor switching at 22 kW in AC-2 duty at 400 V, and 30 kW in AC-3 at 500 V. The AC-4 rating at 400 V is 41 A — that's the plugging/reversing duty cycle, which is the one that usually governs the thermal sizing in high-cycle applications. It mounts on a 35 mm DIN rail per EN 50022, with screw fastening and snap-on. The front face is IP20 — finger-safe for panel installation — but the terminal area is IP00, so live parts are exposed if the panel door is open. Side-by-side mounting is allowed, which saves rail space on a multi-contactor motor starter group. Operating temperature range is -25 to +60 °C, storage goes from -55 to +80 °C. Pollution degree 3 means it's suitable for industrial environments with conductive dust or occasional condensation — typical for a control panel in a factory hall.
Terminal Capacity & Wiring
The screw terminals accept solid conductors 2x (0.25 to 2.5 mm²) on the control side, and stranded 2x (0.75 to 25 mm²) on the main circuit. That's a wide enough range for most motor feeders up to the contactor's rating — 25 mm² stranded is good for about 85 A in practice, which covers the AC-4 current peak.
Mechanical & Electrical Endurance
Mechanical life is 10 million operations typical. The electrical switching rates are duty-dependent: AC-1 (resistive) allows 1000 cycles per hour, AC-3 (motor running) 800 cycles per hour, AC-2 (wound rotor) 400 cycles per hour, and AC-4 (plugging/reversing) 300 cycles per hour. The arcing time is 10 to 15 ms at AC, and DC dropout is 20 to 25 ms. Vibration resistance is 15 g for 5 ms and 8 g for 10 ms — enough for most industrial panels but not for direct engine-mount applications.