ABB FX204A-25/0.03 Residual Current Circuit Breaker 4P 25A 30mA Type A 230/400V AC 2CSF204165R1250

Electricians and panel builders rely on the ABB FX204A-25/0.03 residual current circuit breaker to protect circuits against earth leakage and pulsating DC faults in commercial and industrial installations. This 4-pole device is rated for 25 A and trips at 30 mA residual current, making it suitable for personnel and fire protection in distribution boards.

Key specifications

• Number of poles: 4P
• Rated current (In): 25 A
• Rated residual operating current (IΔn): 30 mA
• Residual current type: Type A (AC and pulsating DC)
• Rated voltage (Ue): 230/400 V AC
• Rated frequency: 50/60 Hz
• Rated short-circuit capacity (Inc): 10 kA
• Rated impulse withstand voltage (Uimp): 4 kV
• Mounting: DIN rail (EN 60715)
• Degree of protection: IP20 (terminals), IP40 (with enclosure)
• Operating temperature range: -25 to +55 °C
• Standards: IEC/EN 61008
• Electrical endurance: 10000 cycles
• Mechanical endurance: 20000 cycles
• Terminal type: screw terminals
• Max. terminal capacity (rigid): 35 mm²
• Max. terminal capacity (flexible): 25 mm²
• Power loss: 4.8 W

Why choose it

The FX204A-25/0.03 combines reliable residual current protection with a compact design for standard DIN rail mounting. Its Type A sensitivity handles both sinusoidal AC and pulsating DC residual currents, addressing modern loads with electronic components.

Ideal use cases

• Protection of socket outlet circuits in commercial buildings
• Distribution boards for workshops and industrial facilities
• Retrofit projects requiring Type A RCDs

Good to know

The device is designed for use in ambient temperatures from -25 °C to +55 °C and offers a high mechanical endurance of 20,000 operations. Screw terminals accept conductors up to 35 mm² rigid or 25 mm² flexible.