Residual current circuit breaker 3P+N 63A 100mA 6kA Type A CNA463J

### Safety and protection in your electrical installation

This 3P+N residual current circuit breaker (RCCB) is a key element ensuring safety in every electrical circuit. Designed to protect against electric shock, it reduces the risk of damage to equipment and fires. Its operation involves quickly disconnecting the circuit in the event of a ground fault current being detected, making it indispensable in every home and workplace.

This circuit breaker is particularly important where there is an increased risk of contact with electricity, e.g., in damp rooms or outdoors. Thanks to its Type A sensitivity, it effectively responds to leakage currents, providing protection for both people and equipment.

Specifications and installation

The circuit breaker is designed for mounting on a DIN rail, which simplifies its installation and replacement. It has 4 poles (3 phases + neutral) and is adapted to operate at a rated voltage of 400V and a rated current of 63A. Its compact dimensions – a width of 4 modules and a depth of 70mm – allow for efficient use of space in the distribution board.

The rated differential current is 0.1A (100mA), ensuring a quick response in the event of a dangerous leakage current. The short-circuit strength of 6kA guarantees reliable operation even in the event of overloads or short circuits in the installation. The ability to connect solid conductors with a cross-section of 1-25 mm² and stranded conductors with a cross-section of 1-16 mm² ensures compatibility with various types of cabling.

Functionality and technical parameters

This residual current circuit breaker stands out with a number of features that make it an ideal choice for both professionals and end-users:

• Selective protection: Allows for precise isolation of the faulty circuit without the need to disconnect the entire installation.
• Short-trip release: Provides a quick response to sudden current surges, minimizing the risk of damage to connected devices.
• Wide operating temperature range: Enables operation in difficult environmental conditions (-25°C to +40°C).
• Protection degree IP20: Provides protection against touching fingers and against the ingress of solid objects larger than 12.5 mm.
• Rated impulse withstand voltage Uimp: At a level of 4kV provides resistance to overvoltages.
• Possibility of additional equipment: Allows for expanding the functionality of the circuit breaker according to individual needs.

Additionally, the lack of a lock prevents accidental disconnection of the circuit breaker by unauthorized persons. Made of high-quality materials, it guarantees long-lasting and reliable operation.