Overcurrent switch, 6kA BKJ63Nd series 1P 16A B characteristic BKJ63Nd 1P B16 BKJ63ND 1P B16

Overcurrent circuit breaker BKJ63Nd 1P B16 is a safety element protecting the electrical installation against overloads and short circuits. Designed for mounting on a DIN rail, it provides reliable protection in circuits with a rated voltage of 230/400V AC. This model, with a rated current of 16A and B characteristic, is ideal for protecting lighting circuits, socket outlets and other loads with a similar load characteristic.

Application and functionality

The BKJ63Nd circuit breaker from the BKJ63Nd series has been designed for a wide range of applications – both in home and commercial installations. Its compact dimensions (68x81x18mm) allow for easy mounting even in tight distribution boards. The B characteristic means that the circuit breaker reacts quickly to an increase in short-circuit current, but is more tolerant to short-term current surges during device start-up, minimizing the risk of unnecessary circuit tripping. This makes it perfect for inductive loads such as motors or transformers.

Construction features and parameters

The circuit breaker is characterized by high resistance to mechanical damage and environmental conditions (operating temperature from -5°C to +40°C). It has an IP20 degree of protection, which provides protection against touching with fingers and against the ingress of solid objects larger than 12.5 mm. The short-circuit strength is 6kA, which guarantees effective protection of the installation in the event of a serious failure. The cross-section of the connection wires is from 1mm² to 25mm², which provides great flexibility when selecting wires. It is equipped with an optical trip indicator, which facilitates identification of the circuit breaker status. Compliance with IEC 60898-1 and IEC 60947-2 standards confirms its safety and reliability.

This overcurrent circuit breaker is characterized by a rated voltage of 230/400V AC, a rated current of 16A and a single number of poles. Its B characteristic ensures a quick response to short circuits while being tolerant to short-term overloads. The short-circuit strength is 6kA, and the degree of protection is IP20. The cross-section of the connection wires is 1...25mm², the operating temperature is in the range of -5...40°C, mounting is on a DIN rail (35mm), and its dimensions are 68 x 81 x 18 mm.