Low-voltage residual current circuit breaker 5SV

ACDC4-pole

Type A RCCBs trip both with sinusoidal AC fault currents and with pulsating DC fault currents. The protective devices are mainly used for single-phase loads with electrical components in the power supply. Single-phase frequency converters are used in many modern devices, such as washing machines or heating pumps. These can generate residual currents from a frequency mixture with frequency components in the kHz range. Type F residual current operated circuit breakers, which have a surge current strength of > 3 kA and a load capacity with smooth DC fault currents of up to 10 mA, protect against this.