AD191 – High Dielectric (5000 VAC) Surface Temperature Switch

CPI’s SnapStat line of bimetallic thermal switches have a bimetal snap disc that actuates a miniature microswitch. This double snap action makes these switches virtually immune to shock and vibration. Epoxy sealing or glass to metal hermetic sealing makes them ideal for demanding industrial or military applications.

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  • 1.00" (25.40mm) height x 1.775" (45.08mm) width
  • Integral screw terminals with .164-32 holes
  • Plastic body, stainless steel mounting flange
  • Dielectric withstanding voltage: 5,000VAC
  • Normally-Open (AD191A) and Normally-Closed (AD191B)


Detect surface temperatures from 0F-300F (-17.8C to 148C).  Plastic body (thermoplastic polyetherimide high heat polymer), stainless steel mounting flange. Terminals accommodate two .164-32 screws.