Overcurrent circuit breaker, 6kA series BKN 3P 40A B characteristic BKN 3P B40A

Safety and reliability in your installation

This three-pole BKN series overcurrent circuit breaker with a rated current of 40A is a key element in protecting electrical circuits. Designed to protect against the effects of overloads and short circuits, it ensures safe and stable operation of installations in both residential and industrial buildings. The B characteristic makes it ideal for circuits with receivers generating short-term inrush currents, such as motors.

Functionality and application

The BKN 3P B40A circuit breaker is designed for control and protection in electrical installations. Its task is to quickly disconnect the circuit in the event of a dangerous increase in current, minimizing the risk of damage to equipment and fires. The rated short-circuit breaking capacity of 6kA guarantees effective protection even in the event of serious disturbances. DIN rail TH35 mounting simplifies integration with existing electrical infrastructure.

Construction and characteristic features

The circuit breaker is manufactured in accordance with IEC/EN 60898-1 and IEC/EN 60947-2 standards, confirming its compliance with European safety standards. Cage clamps allow connection of wires with a cross-section of up to 25 mm², ensuring a secure and durable connection. Mechanical durability of 20,000 cycles and electrical durability of 10,000 cycles guarantee long and trouble-free operation of the device. Energy limitation class 3 indicates its ability to limit short-circuit energy, which further increases the safety of the installation. Rated voltage of 230/400V AC (and 48V DC per pole) makes it a universal solution for various applications.