Type A residual current circuit-breakers detect pulsating direct current and alternating current. Our Twin RCCBs offer the unique ability to test the switch without disconnecting the circuit. They combine two fully functional RCCBs in one device. When the test button is pressed, only one of the circuit-breakers trips, while the other continues to conduct current and maintain protection – ensuring uninterrupted operation. Our KV RCCBs with short-time delay are particularly insensitive to surge currents. This reduces nuisance tripping and increases your system’s uptime.

function test for residual current circuit-breaker without interrupting power, residual current protection complies with standard even during testing procedure, no costs during system downtime, high system availability , high immunity against surge currents and mains-voltage-operated secondary current impulses , tripping not dependent on mains and auxiliary voltage, sensitive to AC residual currents and pulsating DC residual currents (type A) , 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"

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

Power supplies to residential and purpose-built building as well as industrial facilities with TN-S, TT and TN-C-S networks, in which conventional RCCBs trip following transient leakage currents and this is not desired, such as in systems with long cable lengths behind the RCCB, lighting systems with lots of fluorescent lamps (> 20 lamps), computer systems and solar power systems, The twin design allows regularly prescribed function tests to be performed without disconnecting the power, Excluded is the application in TN-C systems and for the protection of installations in which electronic equipment could generate smooth DC currents or residual currents with frequencies other than 50 Hz.

WES 2 restart interlock mounted at factory

• Operating instructions
• Data sheet
• Technical information Derating graph for DFS 2/4
• Technical information dissipation power DFS 2/4
• Prospectus Circuit-breaker overview
• 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