Pressure Switch

Mechanical Pressure Switch – Hydraulic

The electro-hydraulic pressure switch provides an electric signal when the sensed pressure goes above or below the selected setting.

The spring loaded piston is hydraulically dampened. The PSB provides a very accurate hysteresis between the switching points. The required operating pressure is adjusted by the setscrew. Unauthorised adjustments can be prevented by the optional cylinder lock. The electric element is a micro switch with snap-action contact. Three terminals permit application as "On", "Off" or "Changeover" switch. The electrical connection is made with a 3-pole plug-in connector to EN 175301-803 with ground.

• 4 pressure switching ranges
• Stocked operating pressure range: 20-250 bar
• Maximum pressure: 315 bar (4560 psi)
• Fluid connection: Flange mounting or fitted to a level face
• Mounting position: No restrictions
• Environmental temperature: -20 to +80°C
• Duty cycle: 1/s
• Electrical connection: DIN 43650 - A (EN 175301 - 803)
• Protection class: IP65
• Type: Plunger type switch
• Viscosity range: 12 to 400 cSt
• Weight: ~ 1 kg

Note: for inductive DC loads a diode should be used to increase service life.

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