ARM5 Series 630A 3Pole Molded Case Circuit Breaker with High Breaking Capacity MCCB

The ARM5 series molded case circuit breaker represents the latest advancement in circuit protection technology. This 3-pole breaker combines compact modular design with superior current limiting capabilities for reliable operation in demanding industrial environments.

With a rated current range of 400A-630A and voltage rating up to 690V, this MCCB provides comprehensive protection against overloads, short circuits, and under-voltage conditions. The innovative pneumatic protection mechanism ensures rapid response to fault conditions, while the magnetic blowout design facilitates efficient arc extinguishing.

Key technical specifications include:

- Rated insulation voltage: 1000V

- Ultimate short-circuit breaking capacity (Icu): 85kA at 400V

- Service short-circuit breaking capacity (Ics): 85kA at 400V

- Mechanical endurance: 10,000 operations

- Electrical endurance: 7,000 operations

The breaker features multiple protection functions including conventional circuit protection, overcurrent protection, and overvoltage protection. Its compact dimensions (140×255×169mm) allow for space-efficient panel mounting in both vertical and horizontal orientations.

Certified to ISO9001 and CCC standards, this MCCB is suitable for use in commercial and industrial power distribution systems, offering reliable protection for electrical circuits and connected equipment.