Switch type thermal circuit breaker
16 - 40 A, 32 - 250 V | TS series
available in three frame sizes for rated currents up to 40 A.
They are intended to provide protection against sustained overloads.
All CBEs of the TS-line use a thermo-bimetal to simulate the thermal
behavior of the protected components, which could be conductors in
wiring, motors, transformers etc.
The snap-action type of bimetal opens the contact when the temperature of the bimetal has reached a certain threshold level. The circuit
will then remain open unless the reset (or ON-) button is permanently
depressed. In this case the snap-action contact will momentarily reclose until the bimetal has reached its trip-temperature again and
effects the automatic opening operation. This behavior is termed
"cycling trip-free". The "cycling" indicates the momentary re-closings
which do occur, the "trip-free" indicates that the opening operation of
the contacts can not be prevented by pressing the ON or the RESET
Every CBE of the TS-line can well cope with overload currents up to 6
times the rated currents without any back-up assistance. If the fault
current could be higher, CBEs require back-up protection. In many
instances, this back-up protection is provided by the protective devices of the building installation.