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GreenWatt DC1000V Molded Case Circuit Breakers vs Competitors: A Technical Breakdown of Arc Extinction Design

2025-02-27

1. Core Challenge: DC Arc Extinction

DC arcs are harder to interrupt than AC arcs due to their continuous, non-zero crossing nature. Unlike AC arcs that naturally extinguish at voltage zero points, DC arcs require advanced arc-quenching systems to prevent equipment damage and fire risks. GreenWatt’s design specifically targets this challenge, while many competitors rely on repurposed AC circuit breakers for DC applications, leading to critical safety gaps.


2.GreenWatt’s Innovation: Multi-Layer Arc Splitting Technology(see attached Image)

GreenWatt’s DC circuit breakers feature a patented arc chute system with 20–22 metallic splitter plates, designed to:

Fragment and cool DC arcs rapidly: Multiple plates divide the arc into smaller segments, accelerating energy dissipation.

Prevent re-ignition: Enhanced dielectric strength between plates ensures complete interruption.

Withstand high DC voltages: Optimized for solar farms (up to 1500V DC) and EV charging systems.

Competitor Shortcomings :

Generic AC arc chutes: Most competitors use 8–10 plates designed for AC arcs, which fail to split DC arcs effectively.

Overheating risks: Insufficient cooling leads to contact erosion and reduced lifespan.



3. Real-World Applications

GreenWatt’s DC1000V MCCB excels in:

Solar energy systems: Prevents arc fires in PV arrays.

EV charging stations: Ensures leakage-free protection for high-voltage DC circuits.

Battery storage: Safeguards against thermal runaway in lithium-ion systems6.


4.  Conclusion

Why Choose GreenWatt?

Engineered for DC: Dedicated arc extinction system, not repurposed AC components.

Higher safety margins: 2x breaking capacity vs. competitors.

Global compliance: Full adherence to DC-specific standards.


Act Now!

Elevate your energy systems with GreenWatt®’s cutting-edge DC1000V 320A MCCB.

●Request a Free Sample : Experience unmatched performance firsthand.

●Download Technical Specs : Full datasheet and test reports available.

Contact Us : WhatsApp +86 18105773566 | Email: greenwatt@cngreenwatt


 “Get Your Free Quote Today”


GreenWatt® – Where Innovation Meets Reliability.

Certified by TÜV, CE, and CB | 15+ Years of Expertise in Circuit Protection


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