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Residual Current Circuit Breaker
WRV Type B Residual Current Circuit Breaker
Type B protection detects smooth DC residual current, which ordinary AC and Type A devices cannot. That matters wherever an installation contains PV inverters, frequency converters or DC-side EV charging — the fault current there is not necessarily alternating.
Technical overview
Core specifications
Rated current25, 40, 63A
Poles2P, 4P
Residual operating current I∆n30, 100, 300mA
TypeB — AC, pulsating and smooth DC residual currents
Smooth DC detectionRated 6mA
Rated voltage Un230 / 400V AC
Insulation voltage Ui440V
Impulse withstand Uimp (1.2/50µs)4kV
Short-circuit capacity Icn10kA
Ingress protectionIP20
Connection capacity1.5 – 35mm²
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Technical files
Datasheet, dimensions and certificate scope
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PDF · Product datasheet DWG/PDF · Dimensions & installation PDF · Certificate scope
Request Technical Files Typical use
- PV and inverter installations
- EV charging infrastructure
- Installations with frequency converters
Compliance references
- IEC / EN 61008-1
- IEC / EN 62423
Customisation scope
- Brand marking
- Packaging
- Technical literature
Related products
Other products supplied for the same installations.
Residual Current Circuit Breaker
WRD Type A/AC Residual Current Circuit Breaker
Type A residual-current protection covering 25A to 100A. It responds to pulsating DC components as well as sinusoidal AC, which is why the catalogue positions it for individual EV charge points where the vehicle being charged is unknown.
View specifications →
Residual Current Circuit Breaker
WRT Time-Delay Residual Current Circuit Breaker
Time-delayed Type A device for the upstream position. Delaying the trip lets a downstream RCD clear its own fault first, so one earth fault does not take out the whole installation.
View specifications →
Residual Current Circuit Breaker
WRL-63 Type A/AC Residual Current Circuit Breaker
Residual-current protection without overcurrent protection, covering 16A to 63A in 1P+N and 3P+N, with 30, 100 and 300mA sensitivities and both Type A and Type AC detection.
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