Overcurrent circuit breaker, 6kA BKJ63Nd series 3P 4A characteristic D BKJ63Nd 3P D4 BKJ63ND 3P D4

Overcurrent circuit breaker – reliable installation protection

This three-phase overcurrent circuit breaker BKJ63Nd with a rated current of 4A and characteristic D is a key element ensuring safety in every electrical installation. Designed to protect against overloads and short circuits, it performs well in both domestic and industrial applications. Manufactured by LS Electric, a manufacturer with an established position in the market, guarantees high quality and long-term reliability.

Construction and application

The BKJ63Nd circuit breaker is designed for mounting on a 35mm DIN rail. Its compact dimensions (17.8mm wide per pole) allow for efficient use of space in the switchgear cabinet. The ability to connect wires with a cross-section of up to 25mm² provides flexibility when selecting appropriate cables. Circuit breakers from the BKJ63Nd series comply with IEC 60898-1 and IEC 60947-2 standards, which confirms their safety and compliance with applicable standards. Characteristic D makes this circuit breaker particularly recommended for circuits powering devices generating high inrush currents during start-up, such as motors or transformers. This minimizes the risk of unnecessary tripping of the installation during normal operation of these devices.

Key features and benefits

• High breaking capacity: 6kA at 240/415V AC provides effective protection in the event of a short circuit.
• Characteristic D: Provides a delayed response to short-term overloads, ideal for devices with high starting current. Allows you to avoid unnecessary tripping caused by momentary load increases.
• DIN rail mounting: Facilitates and speeds up installation and allows for easy replacement if necessary.
• Wide range of AC/DC voltages: Possibility of use in various types of electrical installations.
• Compliance with standards: Guarantee of safety and reliability confirmed by certificates of compliance with IEC 60898-1 and IEC 60947-2 standards.
• Durable construction: Made of high-quality materials, which ensures long life and resistance to environmental conditions.
• Suitable for wires up to 25mm²: Provides flexibility when choosing wires with the appropriate cross-section for a given application.