Pressure Switch Model PSM-530 (INDFOS)
Applications
- Automatic start/stop of compressors
- Automatic start/stop of water pumps
Special features
- Special features
- Robust design
- Triple pole cut-in/cut-out
- Diaphragm sensor
- Manual on/off
Description
Model PSM-530 pressure switches are essentially designed for on‐off pressure control applications such as air compressors or water pumps to control their working between the minimum and maximum setting values. At the maximum setting value, pressure switch contacts open and
stops the motor. At the minimum value, pressure switch contacts close and start the motor.
A diaphragm senses the change in pressure and actuates a triple pole contact switch, which enables control of 3-phase motors.
The set point (cut-out pressure) and reset point (cut-in pressure) are adjusted by a range screw and a differential screw.
A pressure relief valve (unloader valve) to relieve the pressure locked at the compressor cylinder head is available in model PSM-530.
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