Solar DC Circuit Breaker Manufacturer & Supplier

High-performance MCB & MCCB solutions for PV system protection. Up to 1500V DC rating, TUV/CE certified, and engineered for maximum safety in commercial and utility-scale solar farms.

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Our DC Breaker Series

Reliable Circuit Protection for Every Solar String

ST-MCB 2P DC Breaker

ST-MCB (2P DC)

Max Voltage550V/1000V DC
Current Range6A - 63A
Breaking Cap6kA / 10kA
StandardIEC 60947-2
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ST-MCB 4P DC Breaker

ST-MCB (4P DC)

Max Voltage1200V DC
Current Range10A - 63A
Breaking Cap10kA
CertificationTUV / CE
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ST-MCCB 160A DC Breaker

ST-MCCB (160A)

Max Voltage1000V DC
Current Range63A - 160A
Breaking Cap25kA
TypeMolded Case
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ST-MCCB 250A DC Breaker

ST-MCCB (250A)

Max Voltage1500V DC
Current Range160A - 250A
Breaking Cap35kA
FeaturesHigh Breaking
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Core Technical Advantages

Superior Protection Engineering for High-Voltage DC Systems

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Fast Arc Extinguishing

Features a specialized permanent magnet and arc-extinguishing system designed specifically for DC circuits to ensure rapid and safe interruption.

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Wide Temperature Range

Engineered to operate reliably in extreme environments, with a tested temperature range from -40°C to +85°C, ideal for outdoor PV installations.

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High Breaking Capacity

With Icu up to 35kA, ShineTong DC breakers provide ultimate protection against high-current short circuit events in large solar arrays.

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Non-Polarity Design

Our latest non-polarity DC breakers simplify wiring and eliminate the risk of incorrect installation, increasing overall system safety.

Global Application Scenarios

Trusted Protection in the World's Most Demanding Solar Projects

Combiner Box Installation

Combiner Box Protection

Inverter DC Input

Inverter DC Input Safety

Energy Storage System

Battery Storage Protection

Manufacturing Excellence & Quality Assurance

ShineTong operates an advanced DC circuit breaker factory with automated production lines and precision calibration equipment. We produce over 100,000 poles per month for the global PV market.

Every breaker undergoes rigorous mechanical life tests, thermal trip calibration, and magnetic trip verification. As your reliable partner in international PV protection, we provide comprehensive OEM/ODM services for global brands.

TUV Certificate CE Certificate RoHS Certificate ISO 9001 Certificate
ShineTong DC Breaker Factory

Frequently Asked Questions

Expert Insights into Solar DC Circuit Protection

What is the difference between an AC and a DC circuit breaker? +
DC arcs are much harder to extinguish than AC arcs because they don't have a zero-crossing point. ShineTong DC breakers are specifically designed with magnetic arc-blowout systems to safely handle DC loads up to 1500V.
Are ShineTong DC breakers polarity-sensitive? +
We offer both polarity-sensitive and non-polarity designs. Our non-polarity models are highly recommended for PV systems to prevent installation errors and simplify wiring.
What certifications do your breakers hold for the European market? +
Our entire range of DC breakers is fully TUV and CE certified according to IEC 60947-2 standards, ensuring full compliance for European solar projects.
Can I get customized current ratings for my project? +
Yes. As a manufacturer, we can provide custom current ratings and trip curves to match the specific protection requirements of your inverter or battery storage system.

Request a Professional DC Breaker Proposal & Price List

Contact our expert sales team for wholesale pricing, factory lead times, and technical support for your PV protection project.

Address: High-Tech Industrial Zone, Zhejiang, China

Email: sales@shinetong.com

WhatsApp: +86 158 8888 8888