Get quick appointment for technical support!
DC MCCB Manufacturer & Supplier for High-Voltage Systems
Looking for dependable protection in your high-voltage DC setup? Westhomes DC Molded Case Circuit Breakers (DC MCCBs) are built to handle demanding direct current applications—up to 1500V DC and 630A. Whether you’re working on a solar PV installation, battery storage, EV charging station, or industrial control panel, our DC MCCBs provide fast, accurate protection against overloads and short circuits.
Each unit is compact, easy to install, and available in 2P, 3P, or 4P formats. With high breaking capacity and stable performance even under harsh conditions, these breakers are ideal for isolating faults and keeping your system running safely.
As a direct manufacturer and supplier, Westhomes brings over 20 years of experience in low-voltage protection. Our fully certified factory (ISO, CE, CCC) runs advanced automated lines that produce over 200,000 DC MCCBs annually—so we’re ready for both bulk and OEM/ODM orders. If you need a trusted partner for your DC protection needs, Westhomes is here to help—quick turnaround, reliable quality, and support you can count on.
Need help finding the perfect product or system?
No problem at all. Let one of our expert advisors point you in the right direction.
FAQ
What is a DC MCCB?
A DC MCCB (Direct Current Molded Case Circuit Breaker) prevents damage caused by overcurrents and short circuits and can safely disconnect high-voltage DC loads in case of fault.
How is a DC MCCB different from an AC MCCB?
Unlike AC MCCBs, DC MCCBs are built to handle the continuous, non-zero flow of direct current, which makes arc suppression more difficult. They feature larger arc chutes, magnetic blowout systems, and wider contact gaps to safely interrupt the arc during disconnection.
Where are DC MCCBs typically used?
DC MCCBs are commonly found in:
- Solar PV systems (string protection, combiner boxes)
- Battery energy storage systems (BESS)
- EV charging infrastructure
- DC-powered industrial systems
- Telecom and rail applications
What voltage and current ratings are available?
Westhomes DC MCCBs support ratings up to 1500V DC and 630A, depending on the model. They are available in 2P, 3P, and 4P formats to meet a variety of system configurations.
Why do DC circuits require special breakers?
DC arcs are more difficult to extinguish because the current doesn’t cross zero like in AC. DC MCCBs use enhanced arc chute designs and fast-acting mechanisms to isolate faults without damage.
Can I use a DC MCCB in an AC circuit?
No. DC MCCBs are optimized for direct current and may not perform properly or safely in alternating current systems. Always use circuit breakers matched to your system voltage and type.
Do Westhomes DC MCCBs support bi-directional current flow?
Yes, most models are polarity-independent and can safely interrupt current in either direction, which is essential for energy storage and bidirectional systems.
Are these breakers compatible with solar and hybrid inverters?
Absolutely. Westhomes DC MCCBs are widely used in PV arrays, combiner boxes, and inverter protection.
What standards do Westhomes DC MCCBs comply with?
All products are tested and certified to meet IEC 60947-2, GB 14048.2, and relevant international safety standards.
What’s the difference between a DC MCCB and a DC MCB?
DC MCCBs handle higher current ratings (typically above 100A), have adjustable trip settings, and higher breaking capacities—ideal for large or critical installations. DC MCBs are more suitable for lower-current residential or light commercial DC systems.
REQUEST
YOUR FREE QUOTE
* indicates a required field