Call Us: 01606 871 680

Thermal Protection

ATC Semitec stocks an extensive range of thermal protection products from leading manufacturers such as PEPI, ASAHI, Sefuse from SCHOTT and SEKI.

Thermal protectors are used as a safety mechanism which will protect your devices from overheating in abnormal operating conditions. They will protect from overheating which could ultimately prevent fires or damage to electrical components or appliances.

Typically these can be split into 2 categories:

  • Thermal Fuses
  • Thermal Cut-outs

A thermal fuse (or thermal cut-off or TCO) is a one-shot, non-resettable, temperature-sensitive device that provides ultimate temperature protection in small appliances and electronic circuits.  Thermal fuses cannot be reset, or repaired, they have to be replaced once the original fault that caused them to open has been rectified.

Thermal fuses are fail-safe devices which activate when other safety measures fail to operate, therefore preventing temperatures rising to dangerous levels, and will help to prevent fires. This could either be due to malfunction or misuse.

One-shot thermal fuses (or thermal cut-offs tco’s) are defined by their temperature setting and also by their current rating, the maximum continuous current that can be applied.

Their typical applications include for use in rechargeable batteries, electric motors, transformers, heating elements and small electrical appliances.

We supply both SEFUSE pellet fuses and PEPI bimetal thermal fuses which offer ultimate high temperature protection up to 280°C, where pellet fuses can often be less reliable.

ATC Semitec’s range of thermal cut-outs from world leading manufacturers, PEPI, ASAHI and SEKI protect your devices against abnormal operating conditions, in either probe or 1/2″ disc formats.

Asahi US-603 Manual Reset 1/2" Disc ThermostatThe typical application of a thermal cut-out is to keep a safe temperature below a particular threshold during abnormal operating conditions.

Also known as a thermal limiter or thermal switch, it normally opens at a high temperature during a fault condition and then resets when the product temperature falls to a safe level. They help to protect small appliances, large appliances, electric heaters and battery packs.

Call us today on 01606 871680 to discuss your application’s thermal sensor requirements.  Using our extensive technical knowledge and innovative supplier base, we will work with you to provide the optimum solution for your product.