Reversing contactor assembly for motor direction control
The Siemens 3RA2316-8XB37-1CN2 is a SIRIUS reversing contactor assembly in size S00, built to switch motor direction without external interlocks. The assembly includes three main poles per direction of rotation (cite:) and six auxiliary contacts (cite:) for control circuit feedback. The typical mechanical life of the contactor is 10,000,000 operations (cite:), which sets the maintenance interval for high-cycle reversing stations.
Power ratings and wire termination
Current ratings are 7.6 A at 480 V (cite:) and 9 A at 600 V (cite:). The magnet coil also terminates with screw-type terminals (cite:).
Dimensions are 90 mm width (cite:), 68 mm height (cite:), and 130 mm depth (cite:) — the depth is the key dimension when spacing the assembly from the enclosure back wall or gland plate. Required clearances are 6 mm upwards (cite:), 6 mm forwards (cite:), 6 mm downwards (cite:), 6 mm at the side (cite:), and 0 mm backwards (cite:) — zero clearance to the backplane simplifies panel layout. Vibration resistance is 10.5g / 5 ms and 6.6g / 10 ms for both AC and DC (cite:,).
Lifecycle and compliance
The lifecycle stage is current production (cite:).