Thermal Protection
ATC Semitec stocks an extensive range of auto-reset, manual reset and self-hold thermal protection devices from some of the world’s leading manufacturers such as PEPI, ASAHI, SEFUSE, EAW and SEKI.
Thermal protectors are used as safety mechanisms which will protect your products from overheating in the result of an abnormal operating condition. The thermal cut-outs will protect against an over-temperature situation which could ultimately help to prevent fires or major damage to electrical components or appliances.
Other Products and Services from ATC Semitec
PEPI Thermal Protectors
PEPI thermal protectors from ATC Semitec offer superior and reliable over-temperature protection from 5°C to 200°C with current ratings up to 15A/250VAC. Their neat design small package sizes help to protect circuits in the tightest of spaces.
PEPI bi-metal protectors can be supplied as automatic-reset limiters, self-hold cut-outs or even one-shot fuses offering different levels of safety depending on what the application or approval standard requires. PEPI C and V thermostats are auto-resetting whereas the low-profile PEPI JS offers self-hold, non-resetting protection for both 240VAC and 120VAC.
PEPI J-2 and PEPI H bimetal fuses offer the ultimate in reliable thermal protection, with some ceramic versions offering over-temperature protection up to 280°C.
Fast Response Temp Probes
Some temperature control applications, such as domestic showers and instant water heaters, require a very fast thermal response of 1 second or less. This is to maximise the thermal efficiency of the device and avoid potential scalding of the user.
In response to this, ATC Semitec stock a number of very fast-response temperature probes where the NTC thermistor is situated in the very tip of the sensor. This reduces the thermal path to the thermistor and thus minimises the thermal response time. Response times can be further accelerated by using our thin wall tip or exposed NTC sensor.
Our standard sensor assembly packages include: screw threaded bosses, bayonet fittings and push-fit/clip-in designs – all of which are available with flying leads and/or industry standard connector options.
NTC Thermistors
By definition – NTC thermistors are highly sensitive thermal resistors that respond very quickly to rapid changes in temperature- the word thermistor itself is a contraction of “thermal” and “resistor”.
NTC thermistors are so-called because of the resistance of an NTC decreases with an increasing temperature and their R-T (Resistance – Temperature) is very accurately defined. The R-T accuracy combined with the fast rate of change (compared to RTDs and thermocouples) makes them ideal to incorporate in electronics control circuitry
ATC Semitec
Unit 14, Cosgrove Business Park, Anderton, Northwich, Cheshire, CW9 6FY, United Kingdom
ATC Semitec is the UK’s top distributor of thermal components, offering NTC thermistors, platinum RTDs, thermostats, and more. We support engineers in energy-efficient product development across industries. Committed to sustainability, we’re on a Pathway to Net Zero and have earned the Ecovadis Silver Award.