Overcurrent circuit breaker, 6kA BKJ63Nd series 4P 2A characteristic B BKJ63Nd 4P B2 BKJ63ND 4P B2

Overcurrent circuit breaker BKJ63Nd is a safety element protecting electrical installations against the effects of overloads and short circuits. Designed for use with AC and DC circuits, it finds application in both residential and industrial facilities. The BKJ63Nd 4P model with a rated current of 2A and B characteristic provides effective protection, reacting quickly to sudden current increases while allowing for short-term overloads that may occur during the start-up of certain devices.

Application and functionality

BKJ63Nd series circuit breakers are a universal solution for installers and end-users. Mounted on a 35mm DIN rail, they are characterized by compact dimensions (17.8mm per pole) and the ability to connect wires with a cross-section of up to 25mm², both with screw terminals and lugs. Their primary function is to protect wires and electrical devices from damage caused by excessive current flow. The B characteristic means that the circuit breaker will trip in the range of 3 to 5 times the rated current, making it ideal for protecting circuits with receivers with high inrush current – e.g., electric motors or transformers.

Construction and parameters

The BKJ63Nd 4P B2 circuit breaker has been designed with reliability and durability in mind. Adapted to operate at temperatures from -5°C to +40°C, it ensures stable operation even in difficult conditions. It has confirmation of compliance with IEC 60898-1 and IEC 60947-2 standards, which guarantees its safety and high quality of workmanship. The rated short-circuit breaking capacity is 6kA at 240/415VAC, which means that it is able to interrupt the circuit in the event of a short circuit of this value without damaging the circuit breaker itself. The four-pole design (4P) allows for the protection of an entire three-phase circuit with a neutral wire or two independent single-phase circuits.

Why choose BKJ63Nd?

• Versatility: Suitable for protecting various types of circuits in residential and industrial buildings.
• B characteristic: Provides optimal protection for devices with high inrush current.
• Easy installation: Quick mounting on a 35mm DIN rail and the ability to connect wires using various methods facilitate installation.
• Safety: Compliance with IEC standards guarantees a high level of safety.
• Durability: Made of high-quality materials ensures long-lasting and reliable operation (10,000 on/off cycles).