Siemens 3RT2327-1AP00 SIRIUS Contactor
The Siemens 3RT2327-1AP00 is a SIRIUS contactor in the compact S0 frame size, designed for switching motor loads and resistive circuits in control panels. It uses an AC coil with screw-type terminals and mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 60715 — the standard panel integration for industrial automation enclosures. Rated for continuous duty with an operating temperature range of -25 to +60 °C and storage from -55 to +80 °C, it fits the thermal envelope of most factory-floor and data-center HVAC control panels without derating concerns at typical ambient conditions. The contactor carries auxiliary switch capability, with a mechanical service life of 10 million operations typical — a figure that supports high-cycle applications like conveyor sorting or pump cycling where relay wear drives maintenance intervals.
Mounting and Wiring Constraints
Mounting position allows ±180° rotation on a vertical surface and ±22.5° forward/backward tilt, giving flexibility in tight enclosures. Clearance requirements: 10 mm upward, 10 mm downward, 10 mm forward, 6 mm at the sides — critical to note when laying out DIN-rail density in a retrofit panel. Wire termination accepts solid conductors: 2x (0.5 to 1.5 mm²) and 2x (0.75 to 2.5 mm²); stranded accepts 1 to 10 mm². The main contact screw terminals are sized for 16 to 8 AWG equivalents. These ranges cover typical motor-circuit wiring but do not allow aluminum conductor — stick to copper. At 97 mm depth, 60 mm width, and 85 mm height, the S0 footprint leaves room for adjacent power and control components on a 35 mm rail. Verify depth clearance against the enclosure door or back panel before committing the layout.
Switching Ratings and Coil Data
The AC coil is rated at 230 V at 50 Hz, drawing 0.25 A. Switching times: arcing time 10 to 10 ms, operate time 4 to 16 ms at AC. These figures matter for coordinating with upstream short-circuit protection and ensuring the contactor clears faults within the breaker's let-through window. Contact ratings across voltage levels: 10 A at 24 V and 230 V AC, 6 A at 60 V, 3 A at 400 V, 2 A at 48 V and 500 V, 1 A at 690 V, 0.9 A at 125 V, 0.3 A at 220 V, 0.1 A at 600 V. The 690 V rating confirms suitability for 480/277 V and 600 V nominal systems common in North American and European industrial plants.