Overcurrent circuit breaker, 6kA BKJ63Nd series 1P 50A characteristic D BKJ63Nd 1P D50 BKJ63ND 1P D50

Overcurrent circuit breakers of the BKJ63Nd series are reliable devices designed to protect electrical installations from the effects of overloads and short circuits. The BKJ63Nd 1P 50A with characteristic D, which we offer, is particularly recommended for protecting circuits with receivers with high inrush current, such as motors or transformers.

Characteristics and application

The BKJ63Nd circuit breaker is characterized by a high short-circuit breaking capacity – up to 6kA, which guarantees effective protection in the event of a failure. Characteristic D means a delayed response to current increase, which allows to avoid unnecessary tripping caused by short-term load surges. This is an ideal solution for installations where devices generating high surge currents during start-up occur. This circuit breaker finds application both in residential, commercial and industrial buildings.

Construction and mounting

The BKJ63Nd circuit breaker is designed for mounting on a standard 35mm DIN rail. Compact dimensions (17.8mm width per pole) allow for efficient use of space in the switchgear cabinet. Connection of wires is done using screw terminals or lugs, which ensures a secure and durable electrical connection. The device meets the requirements of IEC 60898-1 and IEC 60947-2 standards, which confirms its safety and reliability.

• Short-circuit breaking capacity: 6kA – high value guaranteeing effective protection of the installation.
• Characteristic D: delayed response to current increase, ideal for devices with high inrush current (motors, transformers).
• Mounting: on 35mm DIN rail – quick and easy mounting in the switchgear cabinet.
• Terminals: screw or lugs – flexibility in choosing the method of connecting wires.
• Operating temperature: -5°C to +40°C – possibility of use in various environmental conditions.
• Electrical life: 10,000 cycles – ensures long-lasting and trouble-free operation of the device.
• Mechanical life: 20,000 cycles – high resistance to mechanical damage.
• Degree of protection: IP20 - protection against touching with a finger and solid objects with a diameter greater than 12.5 mm.

BKJ63Nd circuit breakers are solid and reliable components that ensure the safety of the electrical installation and comfort of use. Thanks to the high quality of workmanship and compliance with applicable standards, they are an optimal choice for both professional installers and end users.