Overcurrent circuit breaker, 6kA BKJ63Nd series 1P 20A characteristic D BKJ63Nd 1P D20 BKJ63ND 1P D20

Overcurrent circuit breaker BKJ63Nd 1P 20A is a safety element protecting electrical installations against overloads and short circuits. It belongs to the BKJ63Nd series, characterized by high reliability and durability. Designed for mounting on a 35mm DIN rail, it provides effective protection in circuits with a voltage of 240/415V AC.

Protection and characteristics

The circuit breaker with characteristic D is particularly recommended for protecting circuits with receivers generating inrush currents during start-up, such as motors, transformers or heating devices. Characteristic D allows for momentary exceeding of the rated current without unnecessary tripping, which minimizes the risk of false alarms and downtime of devices. This ensures stable operation of the installation even under heavy loads. The rated current of 20A makes this circuit breaker suitable for protecting circuits with medium power consumption.

Construction and mounting

The BKJ63Nd circuit breaker is made of high-quality materials, which guarantees its long-term operation. Compact dimensions (17.8mm wide per pole) make it easy to mount in electrical switchboards with limited space. Connection of wires is done using screw terminals or lugs, which ensures a secure and durable electrical connection. Mounting on a 35mm DIN rail is quick and intuitive, and does not require specialized tools.

Parameters and compliance with standards

The circuit breaker meets the requirements of IEC 60898-1 and IEC 60947-2 standards, which confirms its safety and reliability. It has a short-circuit breaking capacity of up to 6kA at a voltage of 240/415V AC. The ambient temperature range is from -5°C to +40°C, which allows its use in various environmental conditions. The circuit breaker has a protection degree of IP20, which means protection against touching with a finger and solid objects larger than 12.5mm. The electrical life of the circuit breaker is 10,000 cycles, and the mechanical life – 20,000 cycles, which proves its high durability.