It is a requirement in electrical distribution systems to have Molded Case Circuit Breakers (MCCB), as they provide both overload protection as well as short-circuit protection.
The main power distribution board (MPDB) of a facility is usually equipped with MCCBs, which allow for protection, coordination, associated control, isolation, and shutdown of the entire system in the case of an emergency.
Molded case circuit breakers (MCCBs)
In the case of molded case circuit breakers (MCCBs), these safety devices are used to protect the conductors of electrical circuits, feeder circuits, downstream electrical equipment, or loads against overloads and short circuits.
In order to mitigate damage to an electrical system, this device automatically trips off and isolate itself from the power supply when there is a fault or overcurrent situation, thus preventing damage to the system, circuit, or electrical load connected to it.
Classification for Voltage levels
MCCBs are used in electrical systems of less than 1000V.
The general classification for Voltage levels are:
- Low voltage – less than 1kV (some classification use 600V).
- Medium Voltage – 1kV up to 40kV.
- High voltage – from 40kV.
NOARK manufactures high-quality switchgears with Global and North American certifications in the listed voltage categories as well as extra high Voltage (EHV) and UHV (ultra high voltage) systems.
Molded Case Circuit Breaker (MCCB) Applications
MCCBs can be used in a variety of applications to manage electrical systems’ overcurrent protection. These applications are found in electrical systems used across many segments including industries, manufacturing, building & infrastructure, residential application, critical & standby power, and many more.
The following are some examples of electrical loads/systems that use the Molded Case Circuit Breaker for protection:
- Electric Motors
- Generators
- Electric Feeders, and more
Best MCCB products Available in North America
It is important to source the products from reliable sources, especially when dealing with the safety and management of expensive electrical distribution equipment and machinery.
That’s why NOARK has committed to ensuring that it meets and exceeds industry regulations to provide North American businesses with industry pioneering products. NOARK offers a variety of MCCB products to cover all of the needs, including:
- Ex9 Series M1 to M5 (15A to 800A)
Available for AC/DC application;
- Ex9 Series M6 (800A to 1200A)
Available for AC application; and
- Ex9M1PV (15A to 100A)
Available for DC application.
The above products are by no means an exhaustive list of the offerings.
NOARK’s MCCBs Features
To ensure customers are provided with the highest quality products, all NOARK Molded Case Circuit Breakers are provided with the following industry-pioneering features:
- High-breaking capacity and a patented arc extinguishing design.
- A bearing-type spindle reduces the operating force required to open and close the operating mechanism.
- High quality compact modular design
- Fixed and adjustable trip unit settings
- Line and load lugs installed standard; and
- 5-Year limited warranty