JCB3-63DC Breaker: Reliable Circuit Protection for Modern Electrical Systems

A new DC circuit breaker series offers enhanced safety and versatility for industrial and residential applications, supporting high voltage and multiple configurations.

In today’s increasingly electrified world, reliable circuit protection is essential for both safety and performance. The JCB3-63DC molded case circuit breaker is designed to meet these demands, combining robust engineering with user-friendly features. With rated currents ranging from 6A to 63A and support for DC voltages up to 1000V across four poles, this breaker is suited for a variety of applications, including solar power installations, electric vehicle charging systems, and industrial control panels.

Built in compliance with IEC/EN 80947-2 standards, the JCB3-63DC offers a rated breaking capacity of 6 kA, ensuring reliable interruption of fault currents. Its B and C tripping characteristics provide flexibility for different load types, from residential circuits requiring fast response to industrial equipment needing higher tolerance for inrush currents. An integrated contact position indicator adds an extra layer of safety by allowing users to visually confirm whether the breaker is on or off.

The breaker is designed for easy installation and maintenance. It supports multiple connection types, including cable, U-type busbar, and pin-type busbar, accommodating wiring from 18 AWG to 25 mm². With an IP20 protection rating, it resists dust and accidental contact, making it suitable for use in electrical enclosures. Additional optional features such as auxiliary contacts, shunt releases, undervoltage releases, and alarm contacts enhance its functionality, allowing for integration into automated and monitored systems.

Durability is another key strength—the JCB3-63DC offers an electrical life of over 1,500 operations and a mechanical life of 20,000 cycles, reflecting its reliability under repeated use. Operating efficiently in ambient temperatures from -5°C to 40°C, this breaker performs consistently in diverse environments.

For engineers, electricians, and system designers seeking a dependable and adaptable DC circuit protection solution, the JCB3-63DC represents a smart choice, balancing performance, safety, and ease of use.