Contact Blocks

Our high quality contact blocks provide a full range of electrical options from gold plated electronic duty contacts for low electrical load applications to heavy duty silver contacts for 600 VAC and 10 Amp loads.

  • Heavy Duty
  • Standard Duty
  • Electronic Duty
  • Gold Plated

These blocks have been successfully used in applications from forklifts to nuclear power plants and from heavy duty mining to clean room electronics.

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.

PT Heavy Duty

Solid and dependable work horses that have lasted in field use for decades. 10 Amp carrying capacity for up to 600VAC or 250 VDC.

PT Gold Plated

Heavy duty contact blocks for harsher environments and low contact resistance applications. 10 Amps at 600 VAC or 250 VDC.

PT Electronic Duty

Sliding contacts create reliable operation with electrical loads where thermal cleaning action is not present. Gold or silver contacts available. 5 Amp at 220 VAC and 250 VDC.

PW Contact Block

Small footprint contact blocks with electronic duty to heavy duty versions. (1 Amp to 10 Amp carry current, up to 120VAC and 125 VDC) Gold bifurcated or silver contacts.

PM Contact Blocks

The PM Series Contact Blocks are obsolete. Please contact us for other solutions.

Up to 4 SPDT silver or gold contacts can switch 5 Amps at 125VDC or 240VAC with momentary or alternating action.