What is a Molded Case Circuit Breaker (MCCB)?

A Molded Case Circuit Breaker (MCCB) is a critical electrical protection device that plays an important role in various power systems, particularly in industrial and commercial applications requiring high current protection. We also offer customization services to meet the specific needs of our customers.

MCCBs are designed to automatically disconnect the circuit in the event of an overload or short circuit, thereby protecting electrical equipment and wiring. The features of MCCB include:

•High Current Protection: MCCBs are suitable for current ranges up to 1000A, providing protection for higher currents.

•Adjustability: The rated current and trip settings of MCCBs can typically be adjusted to meet the needs of different applications.

•Wide Applicability: Suitable for electrical protection in industrial, commercial, and large building environments.

Differences Between MCCB and MCB

Although both MCCBs and MCBs are used for electrical protection, there are some important differences between them:

•Rated Current: MCBs are typically used for lower currents, while MCCBs can handle higher currents (up to 1000A).

•Adjustability: The rated current and trip settings of MCBs are usually fixed, whereas MCCBs can be adjusted as needed.

•Application Scenarios: MCBs are often used in residential and small commercial applications, whereas MCCBs are suitable for industrial, commercial, and large building electrical protection.

CNLonQcom offers the following MCCB models to meet different current and application requirements:

•LQM1

2P/4P

125A/250A

•LQM3

2P/3P

320A/800A

CNLonQcom also provides a range of other key photovoltaic system components, including DC isolators, combiner boxes, miniature circuit breakers (MCB), photovoltaic connectors, and DC surge protectors. These products, when used together with MCCBs, can create a comprehensive and efficient power protection system.

Wenzhou Longqi New Energy Technology Co., Ltd. (CNLonQcom) is committed to providing high-quality electrical protection products to meet the diverse needs of our customers. Our MCCB series undergoes rigorous quality testing to ensure stable and reliable operation under high voltage and different current conditions, providing efficient current protection for various power systems.