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 A switches are sensitive to pulsating and alternating currents. This function is independent of the mains voltage. Devices in the T design are specially made for use in mining and meet the increased requirements for tripping time as per DIN EN 50628 VDE 0118-10:2016-11.

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

• 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 Circuit-breaker overview
• Prospectus DFS HD "heavy duty"
• Dimensional drawing Group view
• STEP file
• Wiring diagram
• Labelling software DFS / DLS