Overcurrent circuit breaker, 6kA BKJ63Nd series 3P 4A characteristic C BKJ63Nd 3P C4 BKJ63ND 3P C4

Overcurrent circuit breaker BKJ63Nd – reliable installation protection

The BKJ63Nd installation circuit breaker is a three-pole (3P) protective element designed to protect electrical circuits against overloads and short circuits. The BKJ63Nd 3P C4 model, with a rated current of 4A and C characteristic, provides effective protection in electrical installations in residential and commercial buildings.

Characteristics and application

The BKJ63Nd series circuit breakers are characterized by high reliability and durability. The C characteristic means that the circuit breaker reacts with a delay to short-term current surges, which is particularly important when connecting receivers with electric motors or other devices generating high starting currents. This minimizes the risk of unnecessary tripping of the circuit during normal operation of the devices. Mounting is done on a standard 35mm DIN rail, which facilitates and speeds up installation.

Advantages and product features

• High breaking capacity: 6kA at 240/415V AC – ensures effective disconnection of the circuit in the event of a short circuit.
• C characteristic: Ideal for protecting circuits with receivers with high starting current (e.g. motors, transformers).
• DIN rail mounting: Quick and easy mounting in standard distribution boards.
• Durable construction: Ensures long-lasting and reliable operation of the device.
• Wide range of applications: Suitable for installations in residential, commercial and industrial buildings.
• Possibility of connecting wires up to 25mm²: Allows use in circuits with larger wire cross-sections.
• Compliance with standards: Meets the requirements of IEC 60898-1 and IEC 60947-2 standards, guaranteeing safety of use.

Technical parameters in practice

The BKJ63Nd 3P C4 circuit breaker has been designed with the convenience of installers and the safety of end-users in mind. Its compact dimensions (17.8mm wide per pole) allow for efficient use of space in the distribution board. The breaking capacity of 6kA provides effective protection against the effects of short circuits, and the C characteristic minimizes the risk of false tripping due to short-term overloads. The possibility of connecting wires with a cross-section of up to 25mm² provides flexibility in choosing the appropriate cables for a given circuit. Resistance to 10,000 operating cycles guarantees long-term trouble-free operation.