Overcurrent circuit breaker, 6kA BKJ63Nd series 3P 10A characteristic D BKJ63Nd 3P D10 BKJ63ND 3P D10

Overcurrent circuit breaker BKJ63Nd 3P 10A with D characteristic is a protective element for electrical installations against overloads and short circuits. It belongs to the BKJ63Nd series from LS Electric, designed for mounting on a 35mm DIN rail. This three-pole circuit breaker, with a rated current of 10A, provides effective protection for electrical circuits in residential and commercial buildings.

Characteristics and application

Characteristic D means that this circuit breaker has a delayed response to current increase, making it an ideal solution for protecting circuits with devices with high inrush current – such as motors, transformers or power supplies. This minimizes the risk of unnecessary tripping of the circuit during the start-up of these devices. These circuit breakers are used in electrical installations of public buildings, industrial facilities, and in homes and apartments, where protection against overloads and short circuits is required.

Construction and parameters

The BKJ63Nd circuit breaker is characterized by a solid construction and high reliability. It has a short-circuit breaking capacity of up to 6kA at 240/415V AC, which guarantees the safety of the installation in the event of a failure. The use of high-quality materials ensures a long service life of the device – up to 20,000 mechanical cycles and 10,000 electrical cycles. Connection of wires is done using lug or screw terminals, which facilitates installation and ensures a secure connection. The width of the circuit breaker is 17.8mm per pole, which allows for efficient use of space in the switchboard.

Circuit breakers of the BKJ63Nd series meet the requirements of IEC 60898-1 and IEC 60947-2 standards, which confirms their compliance with European safety standards. Operation in an ambient temperature from -5°C to +40°C ensures the possibility of using them in various environmental conditions.