Overcurrent circuit breaker, 10kA BKH series 4P 80A characteristic D BKH 4P D80A

Overcurrent circuit breakers of the BKH series – reliable protection for installations

The BKH series installation circuit breaker is an advanced solution providing effective protection of electrical circuits against overloads and short circuits. The 4P model with a rated current of 80A and a D characteristic is particularly recommended for applications requiring high resistance to surge currents, such as protecting devices with electric motors or transformers. The four-pole design allows for complete isolation of the circuit in the event of a failure, increasing safety of use.

Characteristics and application

BKH circuit breakers are characterized by a high short-circuit breaking capacity – in this model it is 10kA. This means that the device is able to safely interrupt the flow of short-circuit current with a value of 10,000 amperes, minimizing the risk of damage to the installation and fire. The D characteristic provides a delayed tripping time for short-term overloads, which is crucial for devices generating high starting currents. This avoids unnecessary tripping of the circuit during normal operation.

These circuit breakers are widely used in:

• Electrical installations in residential and commercial buildings
• Protection of circuits powering electric motors
• Protection of devices generating high surge currents (e.g. transformers)
• Electrical switchboards
• Industrial automation systems

Construction and benefits of use

The BKH series is distinguished by a solid construction and high quality of workmanship. The use of durable materials guarantees a long service life and reliable operation even in difficult operating conditions. The four-pole design provides complete circuit protection, and the compact dimensions facilitate mounting in switchboards with limited space. These circuit breakers comply with the IEC 60947-2 standard, confirming their safety and compliance with stringent quality requirements.

Additional advantages:

• High short-circuit breaking capacity (10kA) – ensures effective protection against serious failures.
• D characteristic – ideal for protecting circuits with devices generating high inrush currents.
• Solid construction – guarantees long life and reliable operation.
• Compliance with IEC 60947-2 standard – confirmation of safety and quality.
• Four-pole design - full circuit isolation in case of failure.