Overview of the thermomagnetic circuit breaker product ranges (CB TM1, UT 6)

Thermomagnetic device circuit breakers

Thermomagnetic circuit breakers feature a thermal tripping mechanism as well as a magnetic tripping mechanism. This means that the protective devices trip faster in the event of a short circuit compared to thermal fuses. With their various characteristic curves, the device circuit breakers also satisfy the requirements for long cable paths. They therefore provide ideal protection against overload and short-circuit currents.

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Your advantages

  • Maximum overcurrent protection over long cable paths, thanks to SFB tripping characteristic
  • Integration in remote signaling concepts, thanks to integrated changeover contact
  • Reduced installation costs, due to bridgeable device circuit breakers (in the base element)
  • Protection of 230/240 V AC control voltages, thanks to the M1 characteristic curve
  • Thermomagnetic device circuit breakers are a part of the COMPLETE line system
CB TM circuit breakers feature a two-piece design and can be individually adjusted with the protective plug

CB TM thermomagnetic device circuit breakers

Thermomagnetic device circuit breakers Function and design

Thermomagnetic device circuit breakers are tripped both thermally and magnetically. The two systems, bimetal and solenoid, operate independently of one another.

This means that in the event of a short circuit, the thermomagnetic device circuit breakers trip more quickly than thermal device circuit breakers.

As a rule, in the event of a short circuit, the tripping mechanism is actuated within 3 to 5 ms.

Use device circuit breakers with optimized SFB (Selective Fuse Breaking) characteristic curve to implement longer cable paths in your system. In conjunction with QUINT POWER power supplies from Phoenix Contact, you can achieve maximum protection for your cables and devices. The device circuit breakers can be switched on again at any time.

Our thermomagnetic device circuit breakers are available in a one-piece and a pluggable design. Choose between screw connection and Push-in connection technology.

Thermomagnetic circuit breakers in the control cabinet of a machine

Circuit breakers are installed in the control cabinets of a wide range of machines

Areas of application

Thermomagnetic device circuit breakers are primarily used in information and communication technology as well as in process control. Due to the various tripping characteristics and precise nominal current levels, the device circuit breakers can be used in a wide range of applications.

For example, they are ideal for protecting programmable logic controllers, valves, motors, and frequency converters.