The FI switch DFS4 016-4/0.10-F from Doepke is a highly advanced residual current circuit breaker designed for use in single-phase and three-phase networks. It provides reliable protection for people, animals, and electrical systems by immediately disconnecting the power supply in the event of dangerously high fault currents. With a compact design that occupies only four modular units, this switch is ideal for applications where space is limited. The DFS4 is capable of detecting various types of fault currents and offers high immunity to surge fault currents. The integrated double-decker terminals allow for the connection of large conductor cross-sections, simplifying installation. Additionally, the free labeling software assists users in labeling, further simplifying handling. The switch is rated for a voltage of up to 400 V and offers high short-circuit resistance, making it a safe choice for various applications.

• Sensitive to alternating and pulsating direct fault currents (Type A) as well as mixed frequencies not equal to 50 Hz
• High immunity to surge fault currents and mains voltage-driven follow current impulses
• Compact size for all rated currents
• Double-sided double-decker terminals for large conductor cross-sections and rail connection
• Switching position indicator for easier troubleshooting.