Molded Case Circuit Breakers (MCCBs) are a crucial component in electrical distribution systems, offering essential protection against overloads and short-circuits.
These devices are typically installed in the main power distribution board (MPDB) of facilities, providing protection, coordination, control, isolation, and the ability to shut down the system during emergencies.
Molded Case Circuit Breakers Explained
MCCBs are vital for shielding the conductors within electrical circuits, as well as feeder circuits and downstream equipment, from damage due to overloads and short-circuits.
The device automatically disconnects and isolates itself from the power supply in the event of a fault or overcurrent condition, thus preventing potential damage to the system or connected loads.
General Classifications of MCCBs
Designed for systems operating under 1000 volts, MCCBs are categorized based on their voltage ratings as follows:
- Low Voltage – less than 1kV (often regarded as less than 600V)
- Medium Voltage – 1000V to 40,000V
- High Voltage – exceeding 40,000V
Additionally, NOARK offers further classifications including Extra High Voltage (EHV) and Ultra High Voltage (UHV) products.
Applications of Molded Case Circuit Breakers
MCCBs serve a broad range of applications for managing electrical system overload protection across various industries and facility types. They are commonly utilized in industrial and heavy-duty equipment such as motors, generators, and electric feeders.
Sourcing Reliable MCCB Products
Ensuring the safety and management of valuable equipment demands reliable sources for MCCBs
Ensuring the safety and management of valuable equipment demands reliable sources for MCCBs. NOARK has dedicated itself to meeting and exceeding industry standards, providing North American businesses with innovative products. Their range includes options like the Ex9M1 (15A to 150A), Ex9M6 (600A to 1200A), and Ex9M1PV (15A to 80A), among others.
Features of NOARK's Molded Case Circuit Breakers
NOARK’s MCCBs come with several advanced features to ensure quality and performance:
- High-breaking capacity and a patented arc extinguishing design
- Bearing-type spindle that lowers the operating force needed to manage the mechanism
- Compact modular design with high quality
- Available with fixed and adjustable trip unit settings
- Standard installation of line and load lugs
- Five-year limited warranty
These features reinforce NOARK's commitment to delivering reliable and efficient MCCB solutions to the market.
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 allows for protection, coordination, associated control, isolation, and shutdown of the entire system in the case of an emergency.
Molded case circuit breakers
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.
To mitigate damage to an electrical system, this device automatically trips off and isolates 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.
General classifications
MCCBs are used for electrical systems that consist of less than 1000V and typically fall under the following general classifications:
- Low voltage – less than 1kV (some classifications use 600V)
- Medium Voltage – 1000V up to 40,000V
- High voltage – from 40,000V
- NOARK also have EHV (Extra high Voltage)
- UHV (Ultra high voltage).
Molded Case Circuit Breaker Applications
Molded Case Circuit Breakers (MCCBs) can be used in a variety of applications to manage electrical system overload protection. These applications apply to electrical systems used across many different industries, facility sizes, and facility types.
The following are some examples of machines where these products are commonly used for industrial-level and high-level equipment:
- Motors
- Generators
- Electric Feeders and more.
North America’s Best
It is important to source the products from reliable sources, especially when dealing with the safety and management of expensive 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:
- Ex9M1 (15A to 150A)
- Ex9M6 (600A to 1200A)
- Ex9M1PV (15A to 80A)
The above products are by no means an exhaustive list of their offerings.
Features of NOARK’s MCCBs
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
- 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
- 5-Year limited warranty.
