REXNORD 472102511U03 SINPAC ELECTRONIC START SWITCH 25A 115V 50/60 HZ 10S DUTY is a solid-state electronic motor starting device designed for controlled starting of single-phase AC motors. This unit is rated for 25 Amps at 115V AC and operates on 50/60 Hz supply frequency, with a specified 10-second start duty cycle.
SINPAC start switches are designed to limit inrush current during motor startup, reducing electrical stress on the motor windings and associated mechanical components. The electronic (solid-state) construction means the device operates without mechanical contacts, improving reliability and service life compared to traditional relay-based starters.
This model is typically used in applications where intermittent motor starting is required and the motor does not require continuous current through the start circuit. The 10-second duty rating indicates that the device is intended strictly for startup and must not remain energized beyond the specified duration.
The 472102511U03 SINPAC unit is commonly found in industrial machinery, material handling equipment, pumps, compressors, and marine auxiliary systems, where controlled startup is required to protect motors and power systems.
The unit is designed as a component-level motor control device and is normally integrated into a larger electrical control system rather than used as a standalone controller.
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