PSM-530 – Pressure switch mechanical
The WIKA Model PSM-530 (often branded as WIKA Indfos or Switzer) is a robust mechanical pressure switch designed specifically for on-off pressure control applications. It is primarily used to automatically manage the start/stop cycles of 3-phase motors in air compressors and water pumps between preset minimum and maximum limits.
- Operating Pressure : High Performance Range
- Application : Industrial & Mobile Systems
About this item
The WIKA Model PSM-530 is a heavy-duty, heavy-current mechanical pressure switch designed specifically for automatically controlling the start and stop operations of industrial water pumps and air compressors. It acts as an automatic circuit breaker that cuts off power to the drive motor when the fluid or air pressure hits a preset maximum limit, and restores power when the pressure drops back down to a preset minimum limit.
| Specifications & Features | PSM-530-4 | PSM-530-9 | PSM-530-9U | PSM-530-15 |
|---|---|---|---|---|
| Pressure Range | 1 to 4 bar | 2.5 to 9.5 bar | 2.5 to 9.5 bar | 7 to 15 bar |
| Adjustable Differential | 1.7 to 4 bar | 4.3 to 9.5 bar | 4.3 to 9.5 bar | 9.3 to 15 bar |
| Max Working Pressure | 8 bar | 20 bar | 20 bar | 20 bar |
| Unloader Valve | None | None | 1/4″ Flare Valve | None |
| Switch Type | Triple Pole Single Throw (TPST) | Triple Pole Single Throw (TPST) | Triple Pole Single Throw (TPST) | Triple Pole Single Throw (TPST) |
| Electrical Rating | AC 440V, 9A | AC 440V, 9A | AC 440V, 9A | AC 440V, 9A |
| Ingress Protection | IP44 | IP44 | IP44 | IP44 |
| Process Connection | 1/2″ BSP Female | 1/2″ BSP Female | 1/2″ BSP Female | 1/2″ BSP Female |
| Sensor Diaphragm | Nitrile (NBR) | Nitrile (NBR) | Nitrile (NBR) | Nitrile (NBR) |
| Manual Override | On/Off Knob | On/Off Knob | On/Off Knob | On/Off Knob |






















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