Molded Case Circuit Breakers

Molded case circuit breaker basic information

Molded case circuit breakers (MCCBs) are vital components used in electrical distribution systems to protect against overloads and short circuits. They are widely employed in residential, commercial, and industrial settings to ensure the safety and reliability of electrical installations.

MCCBs are designed to interrupt the flow of electrical current when it exceeds safe limits. They consist of a trip unit that detects abnormalities in the current and a molded case that encloses the internal components. When an overcurrent condition occurs, the trip unit activates, causing the MCCB to trip and disconnect the circuit, preventing potential damage or hazards.

These circuit breakers offer numerous advantages, such as adjustable trip settings to accommodate different load requirements, robust construction for durability, and the ability to handle high short-circuit currents. MCCBs are available in various current ratings and configurations, making them suitable for a wide range of applications.

When selecting an MCCB, it is crucial to consider factors such as the specific application, the existing electrical panel, current ratings, and trip characteristics. Consulting with a qualified electrical professional can help ensure the correct choice and proper installation of the MCCB in accordance with safety regulations.

Some of the most common manufacturers of MCCBs include Schneider Electric, Siemens, ABB, Eaton, General Electric, and Murray. These companies have established themselves as leaders in the industry, offering reliable and high-quality MCCBs to meet diverse customer needs. Bay Power carries new and reconditioned breakers from the top manufacturers, as well as obsolete brands that are no longer in production, by way of a stringent reconditioning process. All breakers come with a minimum 1-year warranty. 

If you don't see the breaker you need, or if you don't know what breaker is in your panel and need help determining what to use as a replacement, contact us, we can help.