DOEPKE DFS4 025-4/0.03-A R Residual Current Circuit Breaker 25 A 30 mA 4-Pole Type A 9124911

The DOEPKE DFS4 025-4/0.03-A R stands apart from conventional residual current circuit breakers by combining a compact 4-module footprint with a robust 10 kA short-circuit withstand capacity and a special resistance to unwanted tripping. This makes it a dependable choice for protecting circuits where nuisance tripping could disrupt operations, while still delivering the safety performance expected from a premium RCCB.

Highlights

• Rated residual current of 30 mA provides reliable protection against earth leakage currents, meeting strict safety requirements for personnel and fire prevention.
• Type A tripping characteristic ensures sensitivity to both sinusoidal AC and pulsating DC residual currents, making it suitable for modern electrical installations with electronic loads.
• Instantaneous tripping response minimizes the duration of fault conditions, reducing the risk of electric shock and equipment damage.
• High short-circuit withstand capacity of 10 kA allows installation in distribution boards with high prospective fault currents, without the need for additional backup protection.
• Surge current withstand capability of 3 kA ensures stable operation even in networks with frequent switching transients or lightning-induced surges.
• Compact 4-module width (approx. 70 mm) saves valuable DIN rail space, ideal for crowded distribution panels.
• Wide terminal capacity accepts solid conductors up to 35 mm² and flexible conductors up to 25 mm², simplifying wiring with larger cable sizes.
• Operating temperature range from -25 °C to +40 °C allows use in a variety of indoor environments, including unheated areas.

In daily use

Installation is straightforward thanks to the standard DIN rail mounting (EN 60715) and clearly marked terminals. The device's IP20 terminal protection and IP40 housing protection (when installed) ensure safe operation in typical distribution board conditions. The special anti-nuisance tripping feature is particularly valuable in circuits with capacitive leakage currents, such as those feeding IT equipment or variable speed drives, where false trips can be a recurring problem. Electricians will appreciate the reliable performance and the peace of mind that comes from a VDE-certified protective device.

Full specifications

• Product type: Residual Current Circuit Breaker (RCCB)
• Series: DFS4
• Rated current (In): 25 A
• Rated residual current (IΔn): 30 mA
• Number of poles: 4
• RCD type: Type A (AC and pulsating DC sensitive)
• Tripping characteristic: Instantaneous
• Rated voltage (Un): 230/400 V AC
• Rated frequency: 50/60 Hz
• Short-circuit withstand capacity (Inc): 10 kA
• Surge current withstand capability: 3 kA
• Mounting type: DIN rail (EN 60715)
• Module width: 4 modules (approx. 70 mm)
• Terminal capacity (solid): 1.5 - 35 mm²
• Terminal capacity (flexible): 1.5 - 25 mm²
• Degree of protection: IP20 (terminals), IP40 (housing when installed)
• Operating temperature range: -25 °C to +40 °C
• Standards: EN 61008-1, VDE
• Special feature: Resistant to unwanted tripping

Final note

For installations where reliability and protection against nuisance tripping are paramount, the DOEPKE DFS4 025-4/0.03-A R delivers a robust solution that meets stringent safety standards without compromising on performance.