Overcurrent circuit breaker, 6kA BKJ63Nd series 1P 4A B characteristic BKJ63Nd 1P B4 BKJ63ND 1P B4

Overcurrent circuit breaker BKJ63Nd 1P 4A is a safety element protecting electrical installations against overloads and short circuits. It belongs to the BKJ63Nd series by LS Electric, designed to operate in 230/400V AC systems. This single-pole circuit breaker, with a rated current of 4A and B characteristic, finds application in both domestic and industrial installations.

Protection and reliability in every circuit

Circuit breakers from the BKJ63Nd series are characterized by high efficiency in disconnecting circuits in the event of dangerous currents. The B characteristic means that the circuit breaker reacts quickly to current increase, which is particularly important for protecting electronic devices and wires with smaller cross-sections. Short-circuit strength up to 6kA ensures the safety of the installation even in the event of serious disturbances. Additionally, the presence of an optical trip indicator facilitates the identification of the problematic circuit.

Mounting and technical parameters

The circuit breaker is mounted on a standard 35mm DIN rail, ensuring easy installation and replacement. The cross-section of the connection wires ranges from 1mm² to 25mm², allowing connection of a wide range of wires. The device operates in an ambient temperature from -5°C to +40°C, meeting the requirements of most standard operating conditions. Compliance with IEC 60898-1 and IEC 60947-2 standards guarantees the safety and quality of the product.

This overcurrent circuit breaker is ideal for protecting circuits with lower power consumption, e.g. lighting or sockets. Its B characteristic ensures quick disconnection in the event of short circuits and overloads, protecting sensitive electronic devices. Short-circuit strength at 6kA level guarantees high resistance to the effects of short circuits and installation safety. DIN rail mounting simplifies and speeds up the installation and replacement process. A wide range of permissible wire cross-sections (from 1mm² to 25mm²) ensures compatibility with various types of wires. The presence of an optical trip indicator allows for quick identification of the disconnected circuit without the need to disassemble the device, and the operating temperature range from -5°C to +40°C allows it to be used in various environmental conditions.