PW Mechanical Contact Blocks

PW mechanical contact blocks are easy to assemble with an easy snap into place. They have screw, push-on, or printed wiring board terminals. Up to four contact blocks per switch may be used. With standard duty double-break contact blocks, the actuated plunger extends through the back of the block to indicate from the panel that the switch is actuated. 

When either slot 2 or 3 is to be filled with a single contact block, one block alone will not give a positive retention (due to the opening required for the housing mounting screws). Therefore, if either slot 2 or slot 3 is used, both slots must be filled with contact blocks.

  • Small footprint contact blocks with electronic duty to heavy duty versions.
  • Gold bifurcated or silver contacts available.
  • Rated up to 120 VAC or 125 VDC with 10 Amp carrying current.

custom solutions

Industrial controls manufactured by Senasys are built to meet customer requirements worldwide.

high quality

Senasys takes pride in quality control and reliable operation of our products. Every switch is individually 100% tested before it leaves the plant.


Senasys products are UL listed.

made in u.s.a.

Senasys products are designed & manufactured in Eau Claire, Wisconsin, U.S.A.