Machine Design

Thermal Cutoffs

Thermal cutoffs now work to a series of new temperature calibrations.

The first series of temperatures include 70°C, 100°C, 172°C, 190°C, and 205°C. The cutoffs, which protect against hazardous overheating conditions, have an active trigger mechanism in a formulated, electrically nonconductive pellet. When a predetermined temperature is reached, the pellet melts and allows the compression to relax. A trip spring slides the contact away from the lead and opens the circuit. MicroTemp cutoffs are available for loads up to 25 A/250 Vac.

Therm-O-Disc Inc., 1320 S. Main St., Mansfield, OH 44907, (419) 525-8300,

Hide comments


  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.