OEM OFM1/630A Molded Case Circuit Breaker Manufacturers, Manufacturer

The OFM1/630A Molded Case Circuit Breaker (MCCB) is a core power distribution protection component designed for high-current applications up to 630A. Its eye-catching cyan operation handle contrasts professionally with a compact, pure black housing, integrating precise protection functions, intuitive status indication, and a high breaking capacity. With a high insulation voltage of 690V, an Ultimate Breaking Capacity (Icu) of 50kA, and a design compliant with international and national standards, it is a critical device in industrial main distribution systems, large power cabinets, and critical incoming feeder circuits for achieving reliable overload and short-circuit protection, ensuring power supply continuity and selectivity.

Product Description

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Frequently Asked Questions

What is a Molded Case Circuit Breaker (MCCB)?

A Molded Case Circuit Breaker (MCCB) is a type of electrical protection device used to protect the electrical circuit from excessive current, which can cause overload or short circuits. It features a molded plastic housing to enclose all of its components.

How do I choose the correct current rating (63A to 630A) for an MCCB?

The selection depends on the total continuous current demand of your system, electrical load characteristics, and safety margins. The rated current of the MCCB should match or slightly exceed the maximum continuous operating current of the circuit it protects.

What main protection functions do OFM1 series MCCBs provide?

OFM1 series MCCBs provide essential protection against thermal overloads and short circuits, ensuring system stability, protecting electrical distribution networks, and preventing equipment damage.

What is the difference between an MCB and an MCCB?

MCBs (Miniature Circuit Breakers) are primarily used for low-current applications (typically up to 100A) in residential or light commercial settings. MCCBs handle higher current ratings (up to 2500A) with adjustable trip settings, making them suitable for industrial and heavy commercial applications.

Where are these Molded Case Circuit Breakers typically applied?

They are widely used in commercial distribution panels, industrial power grids, main switchboards, motor control centers, and renewable energy distribution systems.

How often should an MCCB undergo maintenance and inspection?

Routine visual inspections should be performed annually, while comprehensive mechanical and electrical testing is recommended every 1 to 3 years depending on the operating environment and usage frequency.

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