Overcurrent circuit breaker, 6kA BKJ63Nd series 1P 63A characteristic D BKJ63Nd 1P D63 BKJ63ND 1P D63

Overcurrent circuit breaker – reliable installation protection

This single-pole overcurrent circuit breaker from the BKJ63Nd series is a safety element protecting the electrical installation against overloads and short circuits. Designed for use with circuits with a voltage of 240/415V AC, it provides effective protection for devices and wires. It is characterized by high reliability and durability, making it an ideal solution for both professional installers and end users.

Design and parameters

The BKJ63Nd circuit breaker is designed for mounting on a 35mm DIN rail. Its compact dimensions (17.8mm wide per pole) allow for efficient use of space in the distribution board. Made of high-quality materials, it guarantees long-lasting and trouble-free operation. It provides protection against overload and short circuit, operating in accordance with IEC 60898-1 and IEC 60947-2 standards. The ability to connect wires with a cross-section of up to 25mm² thanks to the use of lug or screw connections facilitates installation and ensures a secure connection.

D characteristic – protection for demanding loads

Equipped with a D characteristic, this circuit breaker is particularly recommended for protecting circuits powering devices with high inrush current, such as electric motors, transformers or heating devices. The D characteristic allows for short-term overloads without unnecessary tripping of the circuit breaker, which prevents downtime of devices. The rated breaking current is 6kA at a voltage of 240/415V AC, which ensures effective disconnection of the circuit in the event of a short circuit. This circuit breaker also has high mechanical endurance (20,000 cycles) and electrical endurance (10,000 cycles), which guarantees its longevity.