add wishlist add wishlist show wishlist add compare add compare show compare preloader
  • electro-marker-icon Store Location
  • Currencies
    • AUD
    L/A

Moulded Case Circuit Breakers (MCCB)

 

Fastron Electronics carry a range of high quality Moulded Case Circuit Breakers to suit almost any application. Ranges to 1250 Amp, 3 phase circuit breakers.

Various accessories available including Door Switch and Pole Extensions

3 Pole and 4 Pole versions available in 75kA, and 85 kA breaking Capacity

For DC versions See DC Moulded Case Circuit Breakers

 

Approved Standards

 

  • IEC/EN 60898,60947-3
  • IP20 (IP40 Installed) IEC 61008
  • CE, KEMA EUR

FAQ's


1. What is a moulded case circuit breaker (MCCB) and how does it work?
A moulded case circuit breaker (MCCB) is a protective device designed to interrupt excessive current flow in electrical circuits. It safeguards systems from overloads and short circuits by automatically disconnecting the power when unsafe conditions are detected, making it suitable for medium to high-power applications.
2. Where can I buy a reliable moulded case circuit breaker in Australia?
You can purchase reliable MCCB circuit breakers from Fastron Electronics. We supply a wide selection of high-quality MCCBs in various configurations and ratings, with fast shipping and technical support available Australia-wide.
3. What is the difference between a moulded case circuit breaker (MCCB) and a standard circuit breaker?
An MCCB offers higher current ratings and better protection for industrial systems compared to standard miniature circuit breakers (MCBs). MCCBs are typically used in larger, more demanding applications where higher fault levels and current capacities are required.
4. What applications are MCCB circuit breakers typically used for?
MCCB circuit breakers are commonly used in commercial, industrial, and power distribution applications. They provide protection for large motors, electrical panels, and high-capacity circuits, especially in systems requiring higher breaking capacities.
5. How does an MCCB protect electrical systems from overloads and short circuits?
An MCCB protects systems by detecting excessive current due to overloads or faults and automatically breaking the circuit. This interruption prevents damage to wiring, components, and connected equipment.
6. Can an MCCB circuit breaker be used for both industrial and residential applications?
While primarily designed for industrial and commercial use, MCCBs can be used in large residential setups where higher protection is needed. However, standard MCBs are typically sufficient for general home use.
7. What is the maximum current and voltage rating available for your MCCBs?
At Fastron Electronics, our MCCBs are available in ratings up to 1250 Amps with high breaking capacities of 75kA and 85kA, making them suitable for a wide range of heavy-duty applications.
8. How do I install a moulded case circuit breaker in my electrical system?
MCCBs are generally mounted on distribution panels and connected using terminal lugs or busbars. Installation should be carried out by a qualified electrician to ensure safety and compliance with electrical standards.
9. What is the advantage of using a moulded case circuit breaker over a miniature circuit breaker (MCB)?
MCCBs offer higher current ratings, better fault tolerance, and more robust protection than MCBs. They are ideal for applications where standard MCBs may not handle the load or fault levels efficiently.
10. Are MCCBs available for high-voltage systems?
Yes, MCCBs are available for systems requiring higher voltages and breaking capacities. Fastron Electronics offers MCCBs suitable for demanding industrial environments and power distribution needs.
11. How do I select the right MCCB for my application?
To choose the right MCCB, consider your system’s voltage, current load, number of poles, and required breaking capacity. Our team at Fastron Electronics can assist in selecting the best-fit breaker for your needs.
12. Are moulded case circuit breakers compliant with Australian electrical standards?
Yes, our MCCBs comply with international and Australian standards such as IEC/EN 60898, 60947-3, and come with relevant approvals like CE and KEMA EUR, ensuring safety and quality.
13. What is the typical lifespan of a moulded case circuit breaker?
The lifespan of an MCCB varies based on usage, load conditions, and environment. However, high-quality MCCBs, like those we supply, are built for durability and long-term performance in demanding conditions.
14. Can an MCCB be used in power distribution systems?
Yes, MCCBs are widely used in power distribution systems to protect circuits and equipment from overloads and short circuits. Their high current handling capacity makes them ideal for main and sub-panel protection.
15. Do your MCCBs have adjustable trip settings?
Some MCCBs come with adjustable trip settings, allowing for customised protection based on specific circuit requirements. This feature enhances flexibility in both design and operational safety.
Product successfully added to your Shopping Cart
Continue shopping View cart
Light
Dark