SIRIUS S2 Power Contactor — 3RT1034-1AG20-ZW95
The Siemens 3RT1034-1AG20-ZW95 is a SIRIUS power contactor in the S2 frame size, designed for switching motor loads in industrial control panels. It snaps onto 35 mm DIN rail per EN 50022 and terminates with screw-type terminals on the main current circuit. Rated for 50/60 Hz operation, the contactor handles AC-3 duty at 400 V up to 15 kW and AC-1 resistive loads up to 1200 operations per hour. The S2 frame keeps the width at 55 mm — tight enough for high-density panel layouts with side-by-side mounting permitted. Front-side IP20 protects against accidental contact during panel access; the terminal area is IP00, so live parts are exposed when the panel door is open — standard for this class.
Terminal & Wiring
Main circuit terminals accept solid conductors from 2x 0.5 mm² up to 2x 4 mm², and stranded conductors from 2x 0.75 mm² up to 2x 25 mm². The screw-type clamp is standard for panel wiring — no special tooling required. Auxiliary and coil connections share the same terminal family, keeping the wiring kit consistent across the panel.
Environmental & Mounting
Operating temperature range is -25 °C to +60 °C; storage range extends from -55 °C to +80 °C. Pollution degree 3 means it's rated for industrial environments with conductive dust or humidity — no derating needed for typical factory-floor conditions. Mounting is screw-and-snap onto 35 mm DIN rail. Side-by-side mounting is allowed, so you can pack multiple S2 contactors in a row without spacing gaps.