The Doepke DFS4 025-4/0.03-F is a highly advanced residual current circuit breaker (RCCB) designed to ensure safety in electrical installations. This switch disconnects the power supply when dangerously high fault currents occur, thereby protecting people, animals, and electrical systems from potential hazards. The DFS4 is available in two- or four-pole versions and is suitable for both single-phase and three-phase networks. With a compact design that occupies only four modular units, it is ideal for applications with limited space. The large double-decker terminals allow for the connection of conductors with large cross-sections, while the tripped position of the multifunction switch makes troubleshooting easier. The Type F switch offers additional protection against pulsating and alternating fault currents and is particularly resistant to surge currents and lightning, making it a reliable choice for demanding environments.

• Sensitive to alternating and pulsating direct fault currents of the mains frequency (Type A)
• High immunity to surge fault currents and mains voltage-driven follow-on current pulses
• Compact size for all rated currents
• High short-circuit resistance
• Double-decker terminals on both sides for large conductor cross-sections and rail connection.