Overcurrent circuit breaker, 6kA series BKN 3P 20A characteristic C BKN 3P C20A

Protection of electrical installations and devices

This three-pole circuit breaker from the BKN series, with a rated current of 20A and characteristic C, is a key element ensuring safety in every electrical installation. It is designed to protect against the effects of overloads and short circuits, which can damage both the installation and the connected receivers. Its task is to quickly disconnect the circuit in the event of a dangerous current being detected, minimizing the risk of fire or equipment failure.

Characteristics and application

A circuit breaker with characteristic C reacts slightly slower to short-term current surges – which is particularly important when connecting devices with motors (e.g., pumps, drills) that generate high starting current. This avoids unnecessary tripping of the circuit breaker during normal operation of these devices. The rated short-circuit breaking capacity of 6kA guarantees effective protection even in the event of serious disturbances in the network.

Installation and specifications

The BKN 3P C20A circuit breaker is designed for mounting on a DIN rail, occupying 1 module width. This is a compact solution that allows for efficient use of space in the switchgear cabinet. It is adapted to work in AC networks with a rated voltage of 400V and a frequency of 50-60Hz. It has three protected poles, which provides comprehensive protection for the entire circuit. The IP20 degree of protection protects against contact with fingers and against solid objects larger than 12.5 mm.