The Doepke DFS4 025-4/0.03-B NK residual current circuit breaker is a highly advanced safety device designed to protect people, animals, and electrical systems. This residual current circuit breaker (RCCB) disconnects the power supply when dangerously high fault currents are detected. It is available in a compact design and is suitable for both single-phase and three-phase networks. With a type B tripping characteristic, this switch is sensitive to all currents and can detect fault currents with frequencies ranging from 0 Hz to 150 kHz. This makes it particularly suitable for applications in fire-hazardous workplaces. The large double-decker terminals allow for the connection of conductors with large cross-sections, while the tripped position of the multifunction switch lever facilitates troubleshooting. Additionally, a free labeling software supports the labeling of the switches, simplifying installation and maintenance.

• All-current sensitive for fault currents with frequencies from 0 Hz to 150 kHz
• Suitable for fire-hazardous workplaces with a tripping current of 300 mA
• Compact design with only four division units
• Double-decker terminals for large conductor cross-sections
• Voltage-independent tripping for type A fault currents.