The DOEP DFS4 100-4/0.50-B SK residual current circuit breaker is a highly advanced safety device designed to protect people, animals, and electrical systems. This four-pole residual current circuit breaker can immediately disconnect the power supply when dangerously high fault currents are detected. It is suitable for both single-phase and three-phase networks and offers high flexibility due to its compact design, occupying only four modular units. The switch is available in a variety of fault current types and configurations and can handle rated currents of up to 125 A. 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 switch is all-current sensitive and provides protection at frequencies from 0 Hz to 150 kHz, making it particularly robust against various electrical disturbances.

• High immunity to operational leakage and fault currents at frequencies starting from 1 kHz
• All-current sensitive for fault currents with frequencies from 0 Hz to 150 kHz
• Increased surge current and lightning resistance
• Optimized for systems without fire protection requirements
• Easy troubleshooting through the tripped position of the multifunction switch lever.