Overcurrent circuit breaker, 10kA series BKH 2P 125A characteristic C BKH 2P C125A

Overcurrent circuit breaker BKH 2P 125A is a reliable protection for electrical installations, designed for both domestic and industrial applications. The device effectively protects circuits against overload and short circuit, ensuring safety of use and minimizing the risk of failure. The two-pole (2P) design makes this breaker ideal for protecting two phase conductors simultaneously.

Characteristics and application

The BKH 2P C125A circuit breaker is characterized by a C characteristic, which means it is designed to protect circuits with inrush loads, such as motors, transformers or heating devices. This allows for short-term exceeding of the nominal current without unnecessary tripping of the circuit during start-up of devices. The rated current is 125A, and the short-circuit breaking capacity is 10kA – a key parameter for ensuring effective protection in the event of serious disturbances in the installation. This breaker is used in electrical switchboards, fuse boxes and for direct protection of electrical circuits.

Construction and mounting

The BKH 2P C125A circuit breaker is designed for mounting on a DIN rail, which facilitates its installation and replacement. Compact dimensions (27mm width per module) allow for efficient use of space in the switchboard. Solid construction and high-quality materials guarantee long-lasting and trouble-free operation of the device. Additionally, the breaker has a visual indicator of contact position, which makes it easy to quickly identify the status of the device – whether it is on or off. Screw terminals allow connection of wires with a cross-section of up to 50mm², providing flexibility in choosing the appropriate wire for a given circuit.

Compliance with standards and operating parameters

The BKH 2P C125A circuit breaker meets the requirements of IEC 60947-2 standard, which confirms its safety and reliability. The device operates correctly at ambient temperatures from -5°C to +40°C, making it suitable for most standard operating conditions. The rated voltage is 230/400V AC (50/60Hz), which ensures compatibility with typical power grids. The operating voltage is 400VAC. The breaker has a protection degree of IP20, which means protection against touching with a finger and against the ingress of solid objects larger than 12.5 mm.