Residual current circuit breaker 3P+N 63A 300mA 6kA Type A S CPA463J

Residual Current Circuit Breaker – Safety and Protection in Your Installation

This 4-pole (3P+N) residual current circuit breaker from Hager, model CPA463J, is a key element ensuring safety in electrical installations. Designed to protect against electric shock and the effects of damage, it effectively reacts to leakage currents, protecting both people and devices. A rated differential current of 300mA and a high short-circuit breaking capacity of 6kA guarantee reliable protection in the event of a failure.

Key Features and Application

The CPA463J circuit breaker is characterized by type A S selectivity, which means it is particularly effective in detecting sinusoidal alternating currents, single-pole rectified sinusoidal currents and pulse currents. This makes it perfect for protecting circuits powering various types of receivers, including household appliances, lighting and industrial equipment. DIN rail mounting makes it easy to integrate with existing electrical infrastructure.

• Rated current: 63A – provides protection for circuits with high power consumption.
• Rated differential current: 300mA – high sensitivity to leakage currents.
• Short-circuit breaking capacity (Icn): 6kA – guarantees effective disconnection of the circuit in the event of a short circuit.
• Type A S: Universal characteristic ensuring protection against various types of leakage currents.
• DIN rail mounting: Quick and easy mounting in the distribution board.
• Width: 4 modules – compact dimensions allow for efficient use of space in the switchgear cabinet.

Technical Parameters and Construction

The CPA463J circuit breaker has been designed with durability and reliability in mind. Its solid construction and high-quality materials guarantee long-term operation even in difficult operating conditions. The impact current resistance is 5kA, and the rated insulation voltage Ui is 500V, which provides additional safety.

• Rated voltage: 400V AC
• Rated insulation voltage (Ui): 500V
• Rated impulse withstand voltage (Uimp): 4kV
• Ambient temperature: -25°C to +40°C (taking into account the reduction of the rated current above this temperature)
• Wire cross-section: 1-25mm² (solid core), 1-16mm² (stranded)
• Degree of protection: IP20 - protection against contact with fingers and solid objects larger than 12.5 mm.

This circuit breaker is compatible with DIN rails and has aligned screw terminals for top connection and biconnect for bottom connection, making it easy to connect wires of different cross-sections. Total power loss is 18.5W at the rated current.