The Doepke DFS4 100-4/0.03-B NK V500 is a highly advanced residual current circuit breaker (RCCB) designed for use in single-phase and three-phase networks. This four-pole switch provides comprehensive protection for people, animals, and electrical installations by immediately interrupting the power supply in the event of dangerously high fault currents. With a compact design that occupies only four modular units, the DFS4 is both space-saving and powerful. It can detect fault currents with frequencies ranging from 0 Hz to 150 kHz, making it particularly versatile. The large double-decker terminals allow for the connection of conductors with larger cross-sections, while the tripped position of the multifunction switch lever significantly simplifies troubleshooting. Additionally, the free labeling software offers a practical solution for labeling the devices. The switch is optimized for use in fire-hazardous workplaces and provides classic fire protection of 300 mA.

• All-current sensitive for fault currents with frequencies from 0 Hz to 150 kHz
• Voltage-independent tripping for type A fault currents
• Voltage-dependent detection of smooth DC fault currents and AC fault currents
• Optimized for fire-hazardous workplaces with fire protection of 300 mA
• Compatible with large conductor cross-sections through double-decker terminals.