W3 adjustable vacuum switches allow a micro-switch commutation once a preset vacuum value is reached.

The preset vacuum is found by adjusting the external screw located at the center of the instrument, rotating the screw clockwise to decrease and counter-clockwise to increase the value. Mechanical stops protect both the spring and the micro-switch from over pressurization.

Type W3S: Select normally open or normally closed electrical contacts.

Type W3A: normally open electrical contact.

Type W3C: normally closed electrical contact.

Installation position: it can be mounted in any position.

Working temperature: from -20°C to + 80°C

Switching frequency: 60 cycles/min.

Switching accuracy: w 3% of set pressure

Fixed hysteresis value:

WS3 type: about 15% of set value

W3A and W3C: about 10% of set value

Weight: 0.1 Kg.

Electric Features:
Electrical connection: fast-on 6,3mm

Electrical protection according to

DIN 40050: IP54.

Maximum contact load: type W3S

Alternating current up to 250 Volts- 5 Amp

Direct current up to 250 Volts - 0,25 Amp

Maximum contact load: type W3A and W3C

Alternating current up to 42 Volts - 2 Amp

Direct current up to 42 Volts - 1 Amp

-Viton seals

We reserve the right to make modifications to construction without prior notice.