Overcurrent circuit breaker, 6kA BKJ63Nd series 2P 4A characteristic C BKJ63Nd 2P C4 BKJ63ND 2P C4

Overcurrent circuit breaker BKJ63Nd 2P 4A is a reliable protection for electrical installations, designed for both domestic and industrial applications. The device protects circuits against the effects of overloads and short circuits, ensuring safety and extending the life of connected devices. This model, belonging to the BKJ63Nd series, is an improved version of the previous BKN series – with improved technical parameters and a new solution in the form of a separate terminal for the wire and busbar.&

Characteristics and application

The BKJ63Nd circuit breaker with characteristic C is particularly recommended for protecting circuits with receivers with high inrush current, such as electric motors or transformers. Characteristic C means that the circuit breaker reacts to currents 5 to 10 times higher than the rated current, which avoids unnecessary tripping caused by momentary load surges. The two-pole design (2P) ensures disconnection of both the phase and neutral conductor in the event of a failure. Application in 230/400V AC installations makes it a universal solution for most typical electrical installations.

Advantages and benefits

• Protection against overload and short circuit: Provides comprehensive protection for electrical installations and connected devices.
• Characteristic C: Ideal for protecting circuits with receivers with high inrush current – motors, transformers.
• High short-circuit strength (6kA): Guarantees reliable operation even in the event of high short-circuit currents.
• DIN rail mounting: Enables quick and easy mounting in a distribution board.
• Separate terminal for wire and busbar: Facilitates connection of wires and ensures a stable connection.
• Wide range of rated voltages: Compatible with 230/400V AC installations.
• Optical tripping indicator: Quickly informs about the status of the circuit breaker – whether it has tripped and why.
• Durable construction: Made of high-quality materials, which guarantees a long service life.

Design and parameters

The BKJ63Nd 2P C4A circuit breaker has been designed with ease of installation and use by professionals and reliability for end users in mind. The use of high-quality materials and precise workmanship guarantee stable operation of the device for a long time. The circuit breaker meets the requirements of IEC 60898-1 and IEC 60947-2 standards, which confirms its safety and compliance with applicable standards. Connection wires with a cross-section from 1 to 25 mm² can be connected using screw terminals or lugs, which provides flexibility during installation. The operating temperature is in the range of -5°C to +40°C, which allows the circuit breaker to be used in various environmental conditions.