Overcurrent switch, 6kA BKJ63Nd series 3P 6A characteristic B BKJ63Nd 3P B6 BKJ63ND 3P B6

Overcurrent circuit breakers BKJ63Nd – reliable installation protection

The BKJ63Nd overcurrent circuit breaker is a protective element for the electrical installation against the effects of overloads and short circuits. Designed for mounting on a 35mm DIN rail, it provides a quick and effective response in the event of a failure, minimizing the risk of damage to equipment and fire. The BKJ63Nd 3P model with a rated current of 6A and B characteristic is ideal for protecting lighting circuits, socket circuits and other loads of a similar nature.

Construction and application

The BKJ63Nd circuit breaker is characterized by a compact design and ease of installation. The use of characteristic B means that the circuit breaker reacts quickly to an increase in short-circuit current, but is also resistant to short-term current surges during the start-up of devices, which is particularly important in the case of electric motors or transformers. The three-pole design (3P) allows protection of all phase conductors in the circuit, providing comprehensive protection. These circuit breakers are widely used in residential, commercial and industrial buildings.

Key features and benefits

• High breaking capacity: 6kA at 240/415VAC – guarantees effective disconnection of the circuit in the event of a short circuit.
• Characteristic B: Provides a quick response to a short circuit, while tolerating short-term overloads, protecting devices from unnecessary disconnection.
• DIN rail mounting: Enables easy and quick installation in electrical distribution boards.
• Durable construction: Made of high-quality materials, ensuring long life and reliable operation.
• Wide range of rated voltages: Operates at 240VAC (1P) and 415VAC (2-4P), increasing its versatility.
• Compliance with standards: Meets the requirements of IEC 60898-1 and IEC 60947-2 standards – confirmation of safety and product quality.
• Possibility of using accessories: Compatible with additional elements, such as auxiliary contacts (AX), status indicators (SHT) or overvoltage protection (OVT/UVT), which allows to expand the functionality of the circuit breaker.
• Large cross-section conductors: Possibility to connect conductors with a cross-section of up to 25mm², which provides flexibility in choosing the appropriate cables.