Product Description

WIKA PSM02 Compact Pressure Switch

The WIKA model PSM02 pressure switch, in diaphragm or piston variants, opens or closes a circuit depending on whether the pressure is dropping or rising. It features easy and convenient setting of the required switch point via an adjustment screw. Optionally, the switch point adjustment can be factory-set. Its compact design and high vibration resistance make the PSM02 suitable for a wide range of applications including hydraulics, pneumatics, machine building, and pump/compressor monitoring, offering high reliability and long service life.

Technical Specifications:

Setting ranges: 0.2 … 2 bar up to 40 … 400 bar (depending on version)
Switching function: Normally open (NO) or Normally closed (NC)
Repeatability: ≤ ±2 % of span
Contact material: Silver-plated (standard), Gold-plated (optional)
Max. voltage: AC 250 V / DC 48 V (dependent on contact material and load)
Max. switching current: 4 A (resistive load, silver contacts)
Process connection: Various options including G ¼, G ½, ¼ NPT, ½ NPT male
Electrical connection: Angled plug form A (DIN EN 175301-803), M12 x 1 connector, flying leads
Ingress protection: IP65 (with correctly assembled mating connector)
Permissible medium temperature: -20 °C to +85 °C (dependent on sealing material)
Sealing material options: NBR, EPDM, FKM