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

Overcurrent circuit breaker BKJ63Nd is a reliable safety element protecting electrical installations from the effects of overloads and short circuits. Designed for use in both residential and industrial buildings, it provides effective protection for equipment and cables. The 4P model with a rated current of 4A and C characteristic is ideal for protecting circuits with devices with higher starting current draw, such as motors or transformers.

Characteristics and Application

BKJ63Nd series circuit breakers are characterized by high reliability and durability. The construction based on LS Electric technology guarantees stable operation in a wide range of ambient temperatures (from -5°C to +40°C). The C characteristic means that the circuit breaker reacts to short-circuit and overload currents with a delay, which avoids unnecessary tripping caused by short-term current surges – for example, when starting motors. The use of a four-pole version (4P) makes it suitable for protecting three-phase circuits as well as single-phase circuits with a neutral wire.

Parameters and Construction

The BKJ63Nd 4P C4 circuit breaker has a short-circuit breaking capacity of up to 6kA, which ensures effective protection of the installation in the event of serious disturbances. Mounting is done on a standard 35mm DIN rail, which facilitates installation and replacement of the device. Made of high-quality materials, it ensures long-lasting and trouble-free operation. The possibility of connecting wires with a cross-section of up to 25mm² provides flexibility in choosing the appropriate cables.

• Short-circuit breaking capacity at 6kA level ensures installation safety.
• C characteristic allows for a delayed reaction to overloads, which is particularly useful in circuits with motors and transformers.
• Mounting on a 35mm DIN rail facilitates installation and replacement of the device.
• The possibility of connecting wires with a cross-section of up to 25mm² provides flexibility in choosing the appropriate cables.
• Wide operating temperature range from -5°C to +40°C enables use in various environmental conditions.
• Four-pole construction (4P) makes the circuit breaker ideal for three-phase circuits and single-phase circuits with a neutral wire.