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DC circuit breakers are overcurrent protection devices (OCPD) that are the latest addition in homes in Australia. As sustainable power sources are being adopted, the need for DC circuit breakers has increased. At Fastron Electronics, we stock and supply products that encourage widespread sustainable power resources. Our online store carries a large range of DC circuit breakers from globally reputed brands.

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Pick your choice of DC circuit breakers from our vast selection of 12V DC Circuit Breakers, Single and 2 Pole, up to 63 Amps. Our DC Circuit Breakers are sourced from reputable European suppliers (Iskra Doo) and conform to all relevant global electrical standards, including IEC/EN 60898,60947-1/2, IP20 (IP40 Installed) IEC 61008, with approvals VDE, GOST-R.

Our selection of best selling DC circuit breakers include but is not limited to the following:

  • RI61J C 32, 1 Pole DC Miniature Circuit Breaker Disconnect Switch C Curve 32 Amp, 220VDC, 4.5kA
  • RI62J C 40, 2 Pole DC Miniature Circuit Breaker Disconnect Switch C Curve 40 Amp, 440VDC, 4.5kA
  • RI62J C 16, 2 Pole DC Miniature Circuit Breaker Disconnect Switch C Curve 16 Amp, 440VDC, 4.5kA

 

You can not only buy the stock of DC circuit breakers but a complete list of electronic components, products and specialised solutions. We have an excellent team of engineers who will assist you in fulfilling your project supplies needs. If you need some of the not-so-easy components, we have you covered.

Fastron Electronics is a locally operated business that caters to Australians' local electronic component demands by sourcing globally reputed brands at cost-effective prices. We also have our own brand of components and have excellent capability to design, manufacture customised solutions. Our product list is endless, and we offer design, manufacturing and complete solutions packages as well.

Explore the full range of DC circuit breakers, including the 12 V DC circuit breakers on this page and enjoy free shipping on all orders over $300. For special projects or technical support, contact our Melbourne-based team today. Please contact us below to make a special request for any items not shown. Through our wide network of sales channels built over 40 years, we'll be able to source it for you, without a doubt.

We offer a range of services and solutions to suit you and are located at 9B Lakewood Bvd, Braeside Melbourne, VIC, 3195, Australia


FAQ's


1. What is a DC circuit breaker and how does it protect electrical systems?
A DC circuit breaker is an overcurrent protection device designed to interrupt direct current flow during overloads or short circuits. It safeguards electrical systems by automatically disconnecting the circuit, helping to prevent damage to equipment and reduce the risk of fire or failure in DC power applications.
2. Where can I buy a reliable DC circuit breaker in Australia?
You can purchase high-quality DC circuit breakers from Fastron Electronics. We offer a wide range of reliable options sourced from leading European brands, all available through our online store with local support and fast shipping across Australia.
3. How does a DC circuit breaker differ from an AC circuit breaker?
Unlike AC breakers, a DC circuit breaker must interrupt a constant, unidirectional current, which requires a specially designed mechanism to handle arc suppression. DC breakers are built to manage higher voltage persistence and are typically used in applications where AC breakers may not perform effectively.
4. What applications are DC circuit breakers typically used for?
DC circuit breakers are commonly used in solar power systems, electric vehicles, industrial equipment, and other direct current applications. They provide essential overcurrent protection in systems where DC power is increasingly used for energy efficiency and sustainability.
5. Can a DC circuit breaker be used for solar power systems?
Yes, DC circuit breakers are ideal for solar power systems. They protect against overloads and faults in solar circuits, ensuring safe operation of photovoltaic systems, inverters, and battery storage setups by safely interrupting DC currents.
6. What is the maximum voltage and current rating available for your DC circuit breakers?
At Fastron Electronics, we offer DC circuit breakers with various voltage and current ratings, including up to 440VDC and 63 Amps, suitable for a range of applications. These breakers are sourced from globally recognised manufacturers and comply with relevant international standards.
7. How do I choose the right DC circuit breaker for my application?
To select the right DC circuit breaker, consider the system’s voltage, current, load type, and environmental conditions. Our expert team at Fastron Electronics can assist with technical guidance to help you choose a breaker that matches your specific application.
8. Are DC circuit breakers available for high-voltage systems?
Yes, DC circuit breakers are available for high-voltage systems. At Fastron Electronics, we offer models rated up to 440VDC, suitable for demanding industrial, solar, and renewable energy applications that require robust protection at higher voltages.
9. Can DC circuit breakers be used for low-voltage DC circuits?
Absolutely. DC circuit breakers are suitable for low-voltage applications, including 12V DC systems often found in automotive, marine, and small-scale solar installations. We stock various models to match both low- and high-voltage requirements.
10. How do I install a DC circuit breaker in my electrical system?
DC circuit breakers should be installed in accordance with your system’s wiring configuration and local electrical codes. Typically mounted on DIN rails or panels, they must be properly rated and positioned to safely disconnect current in case of a fault.
11. What are the benefits of using a DC circuit breaker in industrial applications?
DC circuit breakers provide reliable overcurrent protection, improve system safety, and help ensure uninterrupted performance in industrial applications. Their robust construction makes them suitable for high-load and critical systems where DC power is used.
12. Are your DC circuit breakers compliant with Australian electrical standards?
Yes, our DC circuit breakers conform to key international standards such as IEC/EN 60898, 60947, and come with approvals like VDE and GOST-R, ensuring compliance and safe operation in Australian environments.
13. What is the typical lifespan of a DC circuit breaker?
The lifespan of a DC circuit breaker depends on usage and operating conditions. However, breakers supplied by Fastron Electronics are sourced from trusted manufacturers and built to withstand demanding environments, offering reliable performance over time.
14. How do DC circuit breakers prevent damage from short circuits or overloads?
DC circuit breakers detect excessive current and automatically disconnect the circuit, stopping the flow of electricity during faults. This protects connected equipment and wiring from overheating, damage, or fire caused by overloads or short circuits.
15. Are DC circuit breakers available in different sizes and designs?
Yes, DC circuit breakers are available in various sizes, poles, and current ratings to suit a wide range of applications. Whether for compact systems or large-scale installations, Fastron Electronics offers models with different designs to meet specific project needs.
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