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DC 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 20kA, and 35 kA breaking Capacity

 

Approved Standards

 

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

FAQ's


1. What is a DC MCCB (DC Molded Case Circuit Breaker)?
A DC MCCB is a type of circuit breaker designed to protect DC electrical systems from overloads and short circuits. It provides reliable circuit interruption for a wide range of direct current applications.
2. How does a DC MCCB work?
A DC MCCB automatically disconnects the circuit when it detects current flow exceeding the rated limit, helping prevent damage to equipment and enhance safety in DC power systems.
3. What are the advantages of using a DC MCCB?
DC MCCBs offer reliable protection, high breaking capacity, and versatile application across various DC systems. They’re available in multiple configurations and current ratings, making them suitable for different setups.
4. In what applications is a DC MCCB typically used?
DC MCCBs are commonly used in solar power systems, industrial automation, battery banks, and other DC-powered applications where circuit protection is essential.
5. How is a DC MCCB different from an AC MCCB?
The key difference is that a DC MCCB is specifically designed to interrupt direct current, which doesn’t cross zero like AC. This makes DC circuit interruption more challenging and requires specialised design.
6. What is the rated current capacity of a DC MCCB?
DC MCCBs offered by Fastron Electronics are available with rated current capacities up to 1250 Amps, catering to various medium to high-power applications.
7. Can a DC MCCB be used in both residential and industrial applications?
Yes, DC MCCBs can be used in both residential and industrial settings, particularly where DC systems like solar panels or battery storage require dependable circuit protection.
8. How do you select the right DC MCCB for your system?
When selecting a DC MCCB, consider the system voltage, current rating, number of poles, and breaking capacity. Consulting with suppliers like Fastron Electronics ensures you choose the correct model.
9. What are the safety features of a DC MCCB?
DC MCCBs come with safety features such as high breaking capacity, pole extensions, and optional accessories like door switches, enhancing both system protection and operator safety.
10. How do you maintain and test a DC MCCB?
Regular maintenance of a DC MCCB includes visual inspections, mechanical operation checks, and performance testing to ensure it trips correctly under fault conditions. Manufacturer guidelines should always be followed.
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