Overcurrent circuit breaker, 6kA BKJ63Nd series 3P 25A characteristic D BKJ63Nd 3P D25 BKJ63ND 3P D25

Overcurrent circuit breaker from the BKJ63Nd series is a reliable safety element for electrical installations, designed for both home and commercial use. This three-phase circuit breaker with a rated current of 25A and D characteristic provides effective protection against overloads and short circuits.

Protection and safety

Circuit breakers from the BKJ63Nd series, including the BKJ63Nd 3P D25 model, are designed to protect electrical circuits from the effects of overloads and short circuits. The D characteristic means a delayed response to short-term current surges, which is particularly important for devices with induction motors or other loads with high starting current – this avoids unnecessary tripping of the device during start-up. The rated short-circuit breaking capacity is 6kA, which guarantees the safety of the installation in the event of a failure.

Installation and application

The BKJ63Nd 3P D25 circuit breaker is mounted on a standard 35mm DIN rail. Compact dimensions (17.8mm wide per pole) allow for efficient use of space in the distribution board. The possibility of connecting wires both with lugs and screws provides flexibility during installation. This circuit breaker is used to protect lighting circuits, socket outlets and other electrical energy consumers. Designed to operate at temperatures from -5°C to +40°C.

Construction features and parameters

BKJ63Nd circuit breakers are characterized by high mechanical durability (20,000 cycles) and electrical durability (10,000 cycles), which translates into long life and reliability of the device. Compliance with IEC 60898-1 and IEC 60947-2 standards confirms its safety and quality of workmanship. Made of high-quality materials resistant to environmental conditions, it ensures stable operation for a long time. Terminals allow connection of wires with a cross-section of up to 25mm².