Residual current circuit-breakers (RCCB) switch the power supply off if dangerous high residual currents occur. DFS 4 are two-terminal or two-terminal pair residual current circuit-breakers for single- or three-phase networks. In the standard design, the compact devices are just four module widths wide. They are available with many different residual current types and variants for rated currents up to 125 A. The large two-tier terminals can also accommodate large conductor cross-sections. The trip position of the multi-function toggle switch simplifies fault-finding. The free label software helps in the labelling process. Type F switches are mixed frequency sensitive. They protect against pulsating and AC residual currents as well as residual currents with mixed frequencies that differ from 50 Hz independent of the mains voltage. Switches in the EV design are intended for use in charging equipment for electric vehicles. They have an additional function to detect smooth DC residual currents ≥ 6 mA. This retains the protective function of upstream residual current circuit-breakers of type A or F. Devices in the standard design are intended for monitoring circuits with a rated voltage of 230 V, 400 V and a rated frequency of 50 Hz.

sensitive to AC residual currents and pulsating DC residual currents at the mains frequency (type A) as well as AC residual currents with multiple frequency components not equal to 50 Hz, additional mains-voltage-dependent function for detecting smooth DC residual currents, Tripping threshold of 6 mA for smooth DC residual currents , high immunity against surge currents and mains-voltage-operated secondary current impulses, compact design for all rated currents, high short-circuit resistance, double-sided two-tier terminals for large conductor cross-section and busbar, switch position indicator, viewing window for labels, multifunction switch toggle with three positions: "on", "off" and "tripped", Neutral conductor position left

quick fastening to mounting rail, any installation position, supply from any direction

These RCCBs are only designed for use in charging stations for electric vehicles.

• Operating instructions
• Data sheet
• Prospectus Power for building sites
• Technical information Derating graph for DFS 2/4
• Technical information dissipation power DFS 2/4
• Prospectus Complete RCCB brochure
• Prospectus EV design
• Prospectus Circuit-breaker overview
• Prospectus Modern residual current protection type F / A KV
• Prospectus DFS HD "heavy duty"
• Text for invitation to tender RTF
• Text for invitation to tender GAEB XML
• Text for invitation to tender GAEB 2000
• Text for invitation to tender GAEB 90
• Dimensional drawing Group view
• STEP file
• Wiring diagram
• Labelling software DFS / DLS
• Download link Cadenas library