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

Overcurrent circuit breakers BKJ63Nd – reliable installation protection

The BKJ63Nd installation circuit breaker is a protective element designed to protect electrical circuits from the effects of overloads and short circuits. Its use in industry, construction, and home installations guarantees safe operation and long-term reliability. This four-pole circuit breaker with a rated current of 4A and B characteristic effectively protects the installation by reacting to current increases, ensuring safe operation of devices.

Characteristics and application

BKJ63Nd circuit breakers with B characteristic are particularly recommended for protecting circuits with resistive-inductive characteristics, such as lighting or sockets. The B characteristic means that the circuit breaker reacts quickly to short-circuit current increases but is less sensitive to short-term current surges during device start-up. This minimizes the risk of unnecessary tripping of the circuit during normal operation. The rated short-circuit breaking capacity is 6kA at 240/415VAC. Mounting is done on a standard 35mm DIN rail.

Construction and benefits

The construction of the BKJ63Nd circuit breaker ensures easy assembly and disassembly, as well as a secure connection to wires with a cross-section of up to 25mm². Made of high-quality materials, it guarantees long life and resistance to environmental conditions. The four-pole design allows protecting the entire circuit in one device, simplifying installation and increasing safety. The circuit breaker meets the requirements of IEC 60898-1 and IEC 60947-2 standards, confirming its compliance with European safety standards. Additionally, it has optional accessories such as auxiliary contacts (SHT) and signaling devices (OVT/UVT).