Overcurrent circuit breaker, 6kA BKJ63Nd series 1P 20A characteristic B BKJ63Nd 1P B20 BKJ63ND 1P B20

Overcurrent circuit breakers of the BKJ63Nd series – reliable installation protection

The BKJ63Nd overcurrent circuit breaker is an electrical protection element designed to protect circuits against the effects of overloads and short circuits. This model, with a rated current of 20A and B characteristic, is used in both domestic and industrial installations. It provides a quick response to current increase, minimizing the risk of damage to equipment and fire.

Construction and application

The BKJ63Nd 1P B20 circuit breaker is a single-pole device, meaning it protects one electrical circuit. The B characteristic means that the circuit breaker reacts quickly to current increases, but allows for short-term exceedances of the rated current – which is important when starting devices with electric motors or other loads with high inrush current. Mounting is done on a standard 35mm DIN rail, which facilitates integration with existing electrical infrastructure.

It finds application in protecting:

• lighting
• socket outlets
• socket circuits
• smaller electrical devices

Key features and benefits

• High breaking capacity: 6kA – guarantees effective disconnection of the circuit in the event of a short circuit, protecting the installation from serious damage.
• B characteristic: provides optimal protection for circuits with loads with moderate inrush current. Allows for momentary overloads without unnecessary tripping.
• DIN rail mounting: simplifies and speeds up installation and replacement of the circuit breaker.
• Wide range of rated voltages: 240/415VAC (AC) – allows use in various types of electrical installations.
• Durable construction: ensures long service life and reliable operation of the device (electrical life up to 8000 cycles).
• Compliance with standards: meets the requirements of IEC 60898-1 and IEC 60947-2 standards, which confirms its safety and quality.
• Compact dimensions: occupies only 1 module on the DIN rail, saving space in the distribution board.
• Cage terminals: allow easy and secure connection of wires with a cross-section of up to 25mm².

Additionally, the BKJ63Nd circuit breakers are characterized by high resistance to environmental conditions – they can operate at temperatures from -5°C to +40°C. This is a solid choice for installers looking for reliable protection for their customers and for end users who value safety and comfort.