Hager CDF663D Residual Current Circuit Breaker, 4-Pole, 63 A, 30 mA, Type F, 10 kA

Electricians and panel builders working on commercial and industrial installations often need reliable protection against residual currents, especially where frequency-controlled drives or single-phase loads with DC components are present. The Hager CDF663D residual current circuit breaker (RCCB) is a 4-pole device rated at 63 A with a 30 mA trip sensitivity, designed to detect Type F residual currents (mixed frequencies and smooth DC). Its 10 kA breaking capacity ensures safety under short-circuit conditions, while the compact 4-module DIN rail design simplifies installation in distribution boards.

Key specifications

• Number of poles: 4
• Rated current (In): 63 A
• Rated residual operating current (IΔn): 30 mA
• Residual current type: F (suitable for circuits with frequency converters, single-phase loads with DC components)
• Rated breaking capacity (Icn): 10 kA
• Rated voltage: 230/400 V AC
• Frequency: 50/60 Hz
• Mounting: DIN rail (35 mm)
• Width: 4 modules (72 mm)
• Terminals: screw, capacity 1.5–50 mm² (rigid) / 1.5–35 mm² (flexible)
• Degree of protection: IP20 (terminals), IP40 (enclosed)
• Operating temperature: -25 °C to +40 °C
• Standards: EN 61008-1, VDE 0664-10
• Electrical endurance: 10,000 cycles; mechanical endurance: 20,000 cycles
• Surge current withstand: 3 kA (8/20 µs); rated impulse withstand voltage: 4 kV

Why choose it

Type F RCCBs are essential for modern electrical installations where loads such as washing machines, air conditioners, or variable speed drives generate residual currents with mixed frequencies or smooth DC components. The Hager CDF663D offers high breaking capacity and reliable protection, ensuring safety and compliance with current wiring regulations. Its robust construction and wide operating temperature range make it suitable for demanding environments.

Ideal use cases

• Protection of circuits supplying frequency-controlled drives (VFDs) in industrial settings
• Commercial buildings with single-phase loads containing DC components (e.g., LED lighting, EV charging)
• Distribution boards requiring selective residual current protection with high short-circuit withstand
• Upgrading existing installations to meet Type F requirements

Good to know

The device is designed for DIN rail mounting and occupies 4 modules (72 mm). It features screw terminals with a wide capacity range, accommodating both rigid and flexible conductors. The RCCB complies with EN 61008-1 and VDE 0664-10, ensuring quality and safety. It has an electrical endurance of 10,000 cycles and a mechanical endurance of 20,000 cycles, providing long-term reliability.