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Moulded Case Circuit Breaker (MCCB)

Moulded Case Circuit Breakers (MCCBs) are crucial components in electrical circuits, designed to interrupt the flow of electric current when abnormalities such as overcurrents or short circuits occur. Their significance lies in the prevention of equipment damage and potential hazards, making them indispensable in various settings. 

The outer shell of MCCBs is typically crafted from molded plastic or insulating materials. This case not only provides protection to the internal components but also ensures insulation for safe operation. Inside, various components, including contacts, trip mechanisms, and arc extinguishers, work in tandem to fulfill the breaker’s role.

How Does a MCCB Work?

Understanding how a Moulded Case Circuit Breaker (MCCB) works is fundamental for anyone dealing with electrical systems. MCCBs play a crucial role in preventing damage caused by overcurrents and short circuits, ensuring the safety and reliability of electrical installations.

MCCBs consist of a molded plastic or insulating case housing various internal components. The primary elements include contacts, a trip mechanism, and an arc extinguisher. These components work in harmony to protect electrical circuits and equipment.

Types of Moulded Case Circuit Breaker

Standard MCCBs: Standard MCCBs form the backbone of circuit protection. They are versatile, reliable, and widely used in diverse settings. Standard MCCBs are the go-to choice for general-purpose applications where a straightforward circuit interruption is required.

High-Performance MCCBs: For applications demanding more than the basics, high-performance MCCBs come into play. These breakers offer advanced features, including enhanced fault protection, faster response times, and increased durability. High-performance MCCBs find their niche in critical electrical systems where optimal performance is paramount.

Electronic MCCBs: Electronic MCCBs incorporate advanced electronic components, elevating their functionality. These breakers provide precise and adjustable protection, allowing for fine-tuning based on specific requirements. Electronic MCCBs are often favored in applications where customization and accuracy are essential.

Thermal Magnetic MCCBs: Combining the benefits of thermal and magnetic trip mechanisms, these MCCBs offer comprehensive protection. They respond swiftly to both prolonged overloads and short circuits, providing a balanced approach to circuit interruption. There are several uses for thermal magnetic MCCBs.

Moulded Case Circuit Breaker price in Bangladesh

The price of an MCCB is influenced by various factors, including specifications, brands, and features. Different MCCBs cater to specific needs, and their prices vary accordingly. Understanding these factors helps buyers make informed decisions based on their requirements and budget.

Several reputable MCCB brands are available in the Bangladesh market. Each brand has its own reputation, offering a diverse range of products. Notable brands include Schneider Electric, Siemens, and ABB. Exploring the offerings of these brands can give buyers a better understanding of available options.

Specification of MCCB

  • 690V; 50/60Hz Rated operating voltage
  • 2000 Isolating voltage
  • ≥8000V Surge voltage wear resistance
  • 1.33Nm tightening moment
  • ≥10000 Electrical wear resistance
  • IP>20
  •  -20° ÷ +65°C Ambient temperature