Residual current circuit breaker type B

RCCB typ B

Rhenes circuit breakers have special grooves on the sides that prevent heating of circuit breakers located next to each other on the mounting rail. The entire structure is protected by patents.

Product quality is guaranteed by the Rhenes inspection and quality department. In addition, circuit breakers from each batch are selectively checked at Avitron Polska.

Functions of residual circuit breakers type B:

  • Protection against electric shock.

Residual current circuit breakers type B are used in photovoltaic installations, households, as protection for chargers of electric cars, and special purpose industrial power distribution systems (direct current).


The Ev31-63-B model is the most popular Rhenes residual current circuit breaker type B.

Technical data of Ev31-63-B
Number of poles 2P, 4P
Rated voltage AC (V) 230/400
Rated current (A) 25, 40, 63
Short circuit capacity (kA) 10 
Rated making and breaking capacity (A) 10xIn
Rated frequency (Hz) 50
Rated residual operating current (A) 0.03, 0.1, 0.3
Electromechanical lifetime (cycles) 4000
Tightening torque (Nm) 2
Maximum conductor diameter (mm2) 25
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