Overcurrent circuit breaker, 6kA BKJ63Nd series 2P 20A characteristic B BKJ63Nd 2P B20 BKJ63ND 2P B20

Overcurrent circuit breaker BKJ63Nd 2P 20A is a reliable safety element for electrical installations, designed for both domestic and industrial applications. The device effectively protects circuits against the effects of overloads and short circuits, ensuring safe operation and long-term device performance.

Characteristics and application

The BKJ63Nd circuit breaker belongs to the LS Electric series, which has gained recognition among professionals for its high quality and reliability. The 2P (two-pole) model is designed to protect two-phase circuits. Characteristic B means that the circuit breaker reacts quickly to an increase in short-circuit current, but is more tolerant of short-term current surges during the starting of devices with motors – making it an ideal choice for lighting, socket circuits and powering household appliances. The rated current of 20A allows you to protect circuits with moderate power consumption.

Construction and mounting

The circuit breaker is mounted on a standard 35mm DIN rail, which facilitates its installation and replacement. Compact dimensions (17.8mm wide per pole) allow for efficient use of space in the switchgear cabinet. Screw terminals allow connection of wires with a cross-section of up to 25mm², ensuring a solid and safe electrical connection. The BKJ63Nd series is the successor to the popular BKN series – it maintains functional compatibility while offering improved technical parameters, including separate terminals for wires and busbars, which simplifies installation.

Parameters and standards

The BKJ63Nd circuit breaker meets the requirements of IEC 60898-1 and IEC 60947-2 standards, which guarantees its safety and compliance with applicable regulations. It has a short-circuit breaking capacity of up to 6kA at 240/415V AC. The device is characterized by a high electrical lifespan (10,000 cycles) and mechanical lifespan (20,000 cycles), ensuring long-term and trouble-free operation. The ambient operating temperature is in the range of -5°C to +40°C.