Thermal device circuit breakers

Protection in the event of overload

Protection in the event of overload

Small but powerful – these device circuit breakers are as narrow as flat-type fuses, but can be restarted.

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Our thermal device circuit breakers provide optimum protection against overload for inductive loads in power distribution systems. The integrated switching function of the device circuit breakers enables immediate switch-on again and minimizes downtimes in your system.

Your advantages

  • Suitable for all flat-type fuse inserts, thanks to standardized plug-in contacts
  • Shortened downtimes, thanks to immediate restart after tripping
  • Space-saving installation thanks to slim design

Function and design

TCP thermal device circuit breaker  

Thermal device circuit breaker

Thermal device circuit breakers are conventionally tripped by means of a bimetallic strip. In the event of an error, the bimetal heats up and disconnects the circuit.

The following applies: the higher the overload, the faster the thermal device circuit breaker trips.

The devices can be switched on again at any time. Thermal device circuit breakers are available as plug-in designs.

Areas of application

TCP thermal circuit breaker in the control cabinet  

Thermal device circuit breakers in the control cabinet

Typical areas of application for thermal device circuit breakers include system-based sensors and actuators.

These include: motors, heating elements and fans, and devices with a high starting current.

The voltage ranges of thermal device circuit breakers are a maximum of 250 V AC or 65 V DC.


Unit 7, 2-8 South Street
Rydalmere NSW 2116

Fax: 1300 723 399
Customer Service Hotline
1300 786 411


Configure products and solutions for your individual application.

Protective devices – Device circuit breakers


Circuit Breakers

Selective protection against overload and short circuit

Device circuit breakers

Learning module on how device circuit breakers work.

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