Overcurrent circuit breaker, 6kA BKJ63Nd series 2P 25A characteristic D BKJ63Nd 2P D25 BKJ63ND 2P D25

Overcurrent circuit breakers BKJ63Nd series – reliable installation protection

This two-pole overcurrent circuit breaker BKJ63Nd with a rated current of 25A and D characteristic is a key element of every safe and reliable electrical installation. Designed to protect circuits against overloads and short circuits, it provides effective protection in both residential and commercial buildings. The D characteristic makes it particularly recommended for protecting circuits powering devices with high inrush current, such as motors or transformers.

Design and application

BKJ63Nd circuit breakers are mounted on a standard 35mm DIN rail, which facilitates their installation and replacement. A width of 17.8mm per pole makes them compact and allows for efficient use of space in the switchgear cabinet. Thanks to the possibility of connecting wires with a cross-section of up to 25mm², this circuit breaker is versatile and can be used in various types of installations. Two types of connection are available – lug and screw, providing flexibility during installation.

Advantages and characteristic features

• High breaking capacity: 6kA at 240/415VAC guarantees effective protection in the event of a short circuit.
• D characteristic: Provides a delayed response to short-term current surges, protecting devices with high inrush current from unnecessary disconnection. Ideal for protecting motors, transformers and other inductive devices.
• Wide range of rated voltages: Can be used in 240VAC (1P+N) and 415VAC (2-4P) installations.
• Durable construction: Made of high-quality materials, ensuring a long mechanical life (20,000 cycles) and electrical life (10,000 cycles).
• Compliance with standards: Meets the requirements of IEC 60898-1 and IEC 60947-2 standards, confirming its safety and reliability.
• Universal application: Suitable for protecting various circuits in residential, commercial and industrial buildings.
• Operating temperature: Trouble-free operation in the temperature range from -5°C to +40°C.
• Degree of protection: IP20 – protection against touching with a finger and solid objects larger than 12.5 mm.