Overcurrent circuit breaker, 6kA series BKN 3P 40A characteristic C BKN 3P C40A

Three-phase overcurrent circuit breaker BKN 3P C40A is a reliable safety element for electrical installations. Designed by LS Electric, this circuit breaker combines compact size with high efficiency in protecting against overloads and short circuits. It is a key component for ensuring safety and continuity of operation in homes, commercial buildings and industrial facilities.

Protection and functionality

The BKN 3P C40A circuit breaker is characterized by a rated current of 40A and has a C characteristic. This means that it is particularly well suited for protecting circuits with receivers generating inrush currents during start-up, such as electric motors or refrigeration units. The breaking capacity of up to 6kA guarantees effective disconnection of the circuit in the event of a serious failure, minimizing the risk of damage and fire. DIN rail mounting simplifies installation and integration with existing distribution boards.

• C characteristic: provides a delayed response to short-term overloads, which helps avoid unnecessary tripping of the circuit during normal operation of devices.

• Three-phase (3P): ideal for protecting three-phase circuits, providing uniform protection for all phase conductors.

• Breaking capacity 6kA: a high breaking capacity value guarantees effective interruption of the circuit in the event of a short circuit, protecting against serious damage.

• DIN rail mounting: standard mounting simplifies installation and replacement of the circuit breaker in existing distribution boards.

• Wide operating temperature range (-5°C to +40°C): allows use in various environmental conditions.

• Contact position indicator: allows visual control of the circuit breaker status (on/off), which facilitates diagnostics and maintenance of the installation.

Application and compliance

The BKN 3P C40A circuit breaker is used in a wide range of electrical installations, both in residential and industrial construction. It will be perfect for protecting:

• Lighting circuits

• Socket outlets

• Electric motors of moderate power

• Heating devices

• Installations in commercial and industrial buildings

The circuit breaker meets IP20 safety standards, which means protection against touching with fingers and solid objects larger than 12.5 mm. The cross-section of the conductors connected to the circuit breaker is from 1mm² to 25mm², which provides flexibility in choosing the appropriate cables. Thanks to its solid construction and high-quality materials, the BKN 3P C40A circuit breaker guarantees long-lasting and trouble-free operation.