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

The EATON FRCDM-63/4/03-G/B is a 4-pole residual current circuit breaker (RCCB) engineered for all-current sensitive protection in industrial and commercial electrical installations. With a rated current of 63 A and a residual operating current of 300 mA, this Type B RCD safeguards against AC, pulsating DC, and smooth DC residual currents, making it essential for circuits with frequency converters, EV charging stations, and UPS systems.

Advantages

Type B sensitivity ensures reliable tripping even with smooth DC fault currents, preventing dangerous situations that standard AC/DC sensitive RCDs might miss. The robust design supports high surge current withstand capability (3 kA 8/20 µs), reducing nuisance tripping. DIN rail mounting and a wide terminal capacity (1.5–35 mm²) simplify installation and maintenance.

Suitable for

• Industrial machinery with three-phase drives and rectifiers
• Electric vehicle charging infrastructure
• UPS systems and data centers
• Renewable energy installations (solar inverters, wind turbines)
• Commercial buildings with mixed loads

Key specifications

• Rated current: 63 A
• Number of poles: 4
• Rated residual current: 300 mA
• RCD type: B (all-current sensitive)
• Rated voltage: 230/400 V AC
• Rated frequency: 50/60 Hz
• Rated conditional short-circuit current: 10 kA
• Rated impulse withstand voltage: 4 kV
• Degree of protection: IP20
• Operating temperature: -25 °C to +40 °C
• Standards: IEC/EN 61008

Recommendations

For maximum safety in modern electrical systems, pair this RCCB with appropriate miniature circuit breakers (MCBs) for overload and short-circuit protection. Ensure proper earthing and regular testing per local regulations. Ideal for panel builders and electrical contractors seeking reliable all-current protection.