ABB Type B RCCB 4P 25A 30mA 3kA 4 Modules F204B-25/0.03-4TE 2CSF204568R1250

Electrical installations with frequency converters, EV chargers, or UPS systems can produce smooth DC residual currents that standard AC or A type RCCBs fail to detect. The ABB F204B-25/0.03-4TE is a Type B residual current circuit breaker that responds to alternating, pulsating DC, and smooth DC residual currents, providing reliable protection against electric shock and fire hazards in such applications.

Who is it for

Electricians and panel builders working on commercial or industrial installations where equipment generates DC fault currents. It suits distribution boards requiring a 4-pole, 25 A rated RCCB with 30 mA sensitivity and a compact 4-module width.

Main features

• Type B residual current detection for AC, pulsating DC, and smooth DC faults
• 4 poles, 25 A rated current, 30 mA rated residual operating current
• Rated conditional short-circuit current 10 kA
• Mounts on DIN rail, occupies 4 modules (70 mm width)
• Screw terminals accept up to 35 mm² rigid or 25 mm² flexible conductors
• Operating temperature range -25 °C to +55 °C
• Electrical endurance 10,000 cycles, mechanical endurance 20,000 cycles

Specifications

• Product type: Residual Current Circuit Breaker (RCCB)
• Residual current type: Type B
• Number of poles: 4P
• Rated current (In): 25 A
• Rated residual operating current (IΔn): 30 mA
• Rated voltage (Ue): 230/400 V AC
• Rated frequency: 50/60 Hz
• Rated conditional short-circuit current (Inc): 10 kA
• Mounting type: DIN rail
• Module width: 4 modules (70 mm)
• Degree of protection: IP20
• Terminal type: Screw terminals
• Terminal capacity: 35 mm² rigid / 25 mm² flexible
• Tripping characteristic: Instantaneous
• Standards: IEC/EN 61008

Tips

Verify that the upstream overcurrent protection is coordinated with the RCCB's rated conditional short-circuit current. For installations with high DC residual currents, Type B is essential; do not substitute with Type A or AC.