Overcurrent circuit breaker, 6kA BKJ63Nd series 1P 1A characteristic D BKJ63Nd 1P D1 BKJ63ND 1P D1

Protection of electrical installations and devices

Overcurrent circuit breaker BKJ63Nd 1P D1 is an electrical installation protection element designed to protect against the effects of overloads and short circuits. It is a key component in every safe electrical circuit, both in residential and industrial buildings. Thanks to its D characteristic, this circuit breaker is perfect for applications requiring high resistance to surge currents, such as starting motors or powering devices with high power consumption.

Construction and application

The BKJ63Nd circuit breaker belongs to the BKJ63Nd series, which replaced the older BKN series. The design changes in the BKJ63Nd series were introduced to improve technical parameters and facilitate installation – a separate terminal was used for the wire and the busbar. Mounting is done on a standard 35mm DIN rail, ensuring quick and easy installation. These circuit breakers are widely used in building automation and in industry, where reliable protection of circuits against damage caused by short circuits and overloads is required.

Characteristics and operating parameters

This specific model is a single-pole (1P) circuit breaker with a rated current of 1A and a D characteristic. The D characteristic means that the circuit breaker has a delayed response to current increase, allowing it to handle short-term current surges without problems, e.g. when starting electric motors or other devices with high power demand. This ensures stable operation of the installation without unnecessary tripping of the circuit breaker. This circuit breaker has a short-circuit breaking capacity of up to 6kA at 240/415VAC. It is designed to operate at temperatures from -5°C to +40°C. It meets the requirements of IEC 60898-1 and IEC 60947-2 standards, which guarantees its safety and reliability.