EATON PXF-63/4/03-B Residual Current Circuit Breaker, 63A, 4-Pole, 300mA, Type B 300303

Protect your electrical circuits with the EATON PXF-63/4/03-B, a 63A 4-pole residual current circuit breaker (RCCB) with a 300mA trip sensitivity and Type B residual current detection. Designed for demanding industrial and commercial applications, it safeguards against AC, pulsating DC, and smooth DC residual currents, ensuring comprehensive protection for equipment with rectifiers, frequency converters, or EV charging infrastructure.

Overview

The PXF-63/4/03-B is engineered for reliability and performance. It features a rated current of 63A, a rated voltage of 230/400V AC, and a short-circuit breaking capacity of 10kA. With a surge current withstand capability of 3kA, it resists unwanted tripping from transient overcurrents. The compact design occupies 4 modules (72mm) on a DIN rail, making it easy to integrate into distribution boards.

What stands out

• Type B residual current protection: detects AC, pulsating DC, and smooth DC residual currents, essential for modern electrical systems.
• High breaking capacity: 10kA short-circuit rating ensures safety under fault conditions.
• Surge current withstand: 3kA capability prevents nuisance tripping.
• Wide terminal capacity: accepts solid and flexible conductors from 1.5 to 35 mm².
• Operating temperature range: -25°C to +40°C for versatile installation environments.

Technical details

• Rated current (In): 63 A
• Number of poles: 4
• Rated residual current (IΔn): 300 mA
• Residual current type: B
• Rated voltage (Ue): 230/400 V AC
• Rated frequency: 50/60 Hz
• Short-circuit breaking capacity (Icn): 10 kA
• Surge current withstand capability: 3 kA
• Mounting type: DIN rail
• Module width: 4 modules (72 mm)
• Degree of protection: IP20 (terminals), IP40 (built-in)
• Operating temperature range: -25 to +40 °C
• Terminal capacity (solid): 1.5 - 35 mm²
• Terminal capacity (flexible): 1.5 - 35 mm²
• Standards: IEC/EN 61008-1, VDE 0664 Part 10
• Tripping characteristic: Instantaneous

Our verdict

The EATON PXF-63/4/03-B is a robust and versatile RCCB, ideal for protecting circuits with electronic loads. Its Type B sensitivity and high surge withstand make it a reliable choice for modern electrical installations.