Eaton PXF-63/4/003-B Residual Current Circuit Breaker, 63 A, 4-Pole, 30 mA, Type B 300302

Protect circuits where smooth DC residual currents can occur—such as in systems with frequency converters, EV charging, or UPS installations—with the Eaton PXF-63/4/003-B. This 4-pole residual current circuit breaker (RCCB) detects AC, pulsating DC, and smooth DC earth leakage currents up to 30 mA, reducing the risk of electric shock and fire. It is rated for 63 A and fits on a standard DIN rail.

Who is it for

Electricians and panel builders who install or maintain three-phase distribution boards in industrial, commercial, or e-mobility settings. It is suitable for circuits where Type B protection is required by regulations.

Main features

• Rated current: 63 A
• Number of poles: 4
• Rated residual operating current: 30 mA
• Residual current type: B (AC, pulsating DC, smooth DC)
• Rated voltage: 230/400 V AC
• Rated frequency: 50/60 Hz
• Short-circuit withstand capacity: 10 kA
• Mounting: DIN rail
• Width: 4 modules (70 mm)
• Degree of protection: IP20 (terminals)
• Operating temperature: -25 to +40 °C
• Standards: IEC/EN 61008
• Connection: screw terminals, 1.5–35 mm²
• Rated impulse withstand voltage: 4 kV
• Rated insulation voltage: 500 V
• Surge current resistance: 3 kA
• Tripping characteristic: instantaneous

Specifications

• Rated current: 63 A
• Number of poles: 4
• Rated residual operating current: 30 mA
• Residual current type: B
• Rated voltage: 230/400 V AC
• Rated frequency: 50/60 Hz
• Short-circuit withstand capacity: 10 kA
• Mounting type: DIN rail
• Modular width: 4 modules (70 mm)
• Degree of protection: IP20 (terminals)
• Operating temperature range: -25 to +40 °C
• Standards: IEC/EN 61008
• Connection type: screw terminals
• Terminal capacity: 1.5–35 mm²
• Rated impulse withstand voltage: 4 kV
• Rated insulation voltage: 500 V
• Surge current resistance: 3 kA
• Tripping characteristic: instantaneous

Tips

Verify that the upstream overcurrent protection is coordinated with the RCCB's short-circuit rating. For installations with high leakage currents, consider a lower sensitivity setting if permitted.