Overcurrent circuit breaker, 6kA BKN series 1P 25A characteristic D BKN 1P D25A

Safety and protection of electrical installations

This single-pole circuit breaker of the BKN series, with a rated current of 25A and characteristic D, is a key element ensuring safety in every electrical installation. Designed to protect circuits against overload and short circuit, it provides reliable protection for devices and wires. Characteristic D means that this circuit breaker allows for short-term exceeding of the rated current without unnecessary tripping – which is particularly important for devices with motors or other elements generating high starting currents.

Construction and application

The BKN 1P D25A circuit breaker is designed for mounting on a TH35 rail (DIN rail). Its compact size allows for efficient use of space in the distribution board. It is ideal for protecting lighting circuits, socket outlets and other loads with characteristic loading. Thanks to its high breaking capacity (6kA), it provides effective protection even in the event of serious disturbances in the network.

Characteristic D – protection for demanding loads

The choice of characteristic D is important when protecting circuits supplying devices generating high inrush currents during start-up. Circuit breakers with characteristic D are characterized by a delayed tripping time, which avoids unnecessary shutdowns caused by short-term current surges. This makes them ideal for applications such as:

• Electric motors
• Compressors
• Transformers
• Halogen lighting
• Heating devices

This solution minimizes the risk of downtime and ensures the continuity of operation of connected devices.