DC Mini Circuit Breaker (MCB) Manufacturer
Ensure safety and reliability in your electrical system with our high-performance miniature circuit breakers. Designed for residential, commercial, and industrial applications, our MCBs provide stable protection and long-lasting performance.
- Overload Protection – Cuts power to avoid overheating.
- Short-Circuit Protection – Fast response to fault currents.
- Durable & Compact – Strong, space-saving, easy to install.
Our Featured DC MCB Products
Reliable miniature circuit breakers for safe and efficient power protection.
Model:SLD-63 1P
- Compact single-phase protection
- Prevents overload & short-circuit
- Easy to install in home use
Model:SLD-63 2P
- Dual-pole safety for circuits
- Protects phase + neutral lines
- Ideal for residential & office
Model:SLD-63 3P
- Three-phase protection system
- Handles higher power loads
- Reliable for industrial use
Model:SLD-63 4P
- Full 4-pole protection
- Covers 3-phase + neutral line
- Best for factories & heavy duty
Soltree – Trusted Electrical Solutions from China
Work directly with a trusted Chinese manufacturer and save up to 30% vs. local suppliers.
About Soltree
High Quality, Better Price – That’s Soltree
With 15+ years of expertise in electrical protection, Soltree specializes in producing high-quality miniature circuit breakers (MCBs). Our MCBs are widely used in residential, commercial, and industrial applications, ensuring reliable overload and short-circuit protection.
We operate over 100,000㎡ of modern factory space with 200+ skilled workers, delivering consistent quality at competitive prices. Backed by advanced production lines, strict testing, and strong technical support, we guarantee excellence from raw material sourcing to final assembly.
Soltree – Reliable Electrical Solutions
Global-Ready, Trusted by Professionals
Soltree provides reliable DC miniature circuit breakers (MCBs) designed for residential, commercial, and industrial applications. By integrating advanced technology, strict quality control, and efficient production, our DC MCBs ensure superior protection against overload and short-circuit while meeting international safety standards at competitive costs. Our mission is to help partners worldwide simplify installation, enhance electrical safety in DC systems, and build smarter power distribution solutions.
Why Choose Soltree Mini Circuit Breakers?
Reliable, standards-compliant protection in a compact DIN-rail form—built for homes, businesses, and industrial panels.
Proven Safety & Performance
Specialized tripping mechanisms protect against overloads and short circuits in DC systems with high breaking-capacity options (6kA / 10kA / 15kA) and compliance with IEC/EN 60947-2.
Flexible Configurations
Choose the setup that fits your DC system: 1P/2P/3P/4P, 6–63A ratings, and DC 250V/500V/1000V. A flame-retardant housing and clear status window make checks easy.
Factory-Direct Quality & OEM
In-house production and strict QC ensure consistent performance, competitive pricing, and fast lead times—plus private-label/OEM options to match your brand.
Certified for Global Markets
CE, RoHS, and CB certifications with multilingual documentation and responsive after-sales support, so your projects pass inspections and scale worldwide.
Customization That Builds Your Brand
Logo, packaging, product design, and distributor support — everything can be tailored to help your business stand out.
Logo & Branding
Custom logos, labels, and product copywriting to strengthen your brand identity.
Packaging Options
Retail boxes, bulk packaging, and private label designs tailored to your sales channels.
Product Design & Development
From new specifications to complete ODM projects, we bring your product ideas to life.
Distributor Materials
Customized brochures, manuals, and marketing assets to support your sales network.
Table of contents
- 1. What Is an DC Mini Circuit Breaker (MCB)?
- 2. Key Functions of DC Mini Circuit Breakers (MCBs)
- 3. Flame-Retardant Protection for Maximum Safety
- 4. DC Mini Circuit Breaker Specifications
- 5. Wide Temperature Resistance for Reliable Performance
- 6. Proven Durability for Long-Term Reliability
- 7. Compact Design, Seamless Integration
1. What Is an DC Mini Circuit Breaker (MCB)?
1. What Is an DC Mini Circuit Breaker (MCB)?
DC Mini Circuit Breaker (MCB) is a crucial safety device that automatically disconnects the direct current circuit during abnormal conditions, such as overloads, reverse currents, or short circuits, ensuring reliable protection for people, batteries, solar panels, and other DC equipment.
Reliable Protection for Every Circuit
Safe · Compact · Dependable
The DC Mini Circuit Breaker provides dependable protection with a compact, user-friendly design. It is equipped with a status indicator window for quick visual checks.
- Green = ON – Circuit is connected, power is flowing
- Red = OFF – Circuit is disconnected, and power is cut off safely
With these clear indicators, users can easily monitor DC circuit conditions at a glance. Designed for solar PV systems, energy storage, EV charging, and industrial DC applications, Soltree DC MCBs ensure consistent safety, efficient installation, and long-term reliability. Perfect for modern renewable energy projects and smart power distribution, they help ensure that DC power is reliably controlled, monitored, and maintained.
2. Key Functions of DC Mini Circuit Breakers (MCBs)
DC Mini Circuit Breakers provide reliable protection in a compact design, offering essential safety functions for stable performance in homes, businesses, and industries.
- Flame-Retardant Shell:
Built with high-quality flame-resistant materials, the MCB housing prevents fire hazards and enhances overall system safety.
- Overload Protection:
Automatically trips to cut off power when circuits are overloaded, protecting appliances and wiring from damage.
- Short-Circuit Safety:
Responds instantly to short-circuit conditions, preventing dangerous surges and ensuring user safety.
- Extended Handle:
Designed for ease of use, the extended handle makes operation simple and reliable, even in frequent switching environments.
3. Flame-Retardant Protection for Maximum Safety
DC Mini Circuit Breakers are built with high-quality flame-retardant materials that provide an extra layer of protection against fire hazards.
Durable Shell · Fire-Resistant Design
The flame-retardant casing of the DC MCB is engineered to withstand high temperatures and prevent the spread of fire in demanding DC environments. This safety feature ensures stable performance even under continuous loads, reverse currents, or fault conditions, thereby reducing potential risks for solar PV systems, energy storage, EV charging stations, and industrial DC applications.
By combining fire resistance with advanced DC electrical protection, Soltree DC MCBs provide peace of mind, making them an ideal choice for renewable energy and modern power distribution systems where safety and reliability are essential.
4. DC Mini Circuit Breaker Specifications
Wide range of ratings and configurations—reliable protection for solar, storage, EV, and industrial DC systems.
| Specifications | Available Options |
|---|---|
| Pole Configuration | 1P, 2P, 3P, 4P |
| Rated Current (A) | 6, 10, 16, 20, 32, 40, 63 |
| Rated Voltage | 250V / 500V / 750V / 1000V DC |
| Breaking Capacity | 10kA / 15kA DC |
| Operating Temperature | -40°C to +70°C |
| Standards Compliance | IEC 60947-2, UL 489, EN 60947-2 |
| Mounting | DIN Rail (35mm) |
| Electrical Life | 10,000 operations |
5. Wide Temperature Resistance for Reliable Performance
DC Mini Circuit Breakers are engineered to operate stably under extreme environmental conditions, ensuring safety and reliability whether in freezing cold or scorching heat.
Consistent Protection in Any Climate
Built with high-quality materials and precision engineering, DC MCBs deliver dependable performance across a wide temperature range, ensuring stable protection in diverse environments.
Low Temperature: Operates reliably in freezing climates, maintaining consistent protection for outdoor solar arrays, storage systems, and remote installations.
High Temperature: Withstands heat and continuous DC loads without compromising safety or performance.
This durability makes them ideal for applications such as photovoltaic systems, energy storage, EV charging, and industrial DC networks. Wherever they are installed, Soltree DC MCBs provide uninterrupted protection and long-term reliability, regardless of the climate.
6. Proven Durability for Long-Term Reliability
Engineered with premium materials and advanced manufacturing, Soltree DC MCBs deliver exceptional endurance in demanding applications.
Tested for Thousands of Cycles
Each Soltree DC MCB undergoes rigorous electrical and mechanical testing to ensure consistent performance and safety throughout its entire lifespan. With 8,000+ electrical switching cycles and 10,000+ mechanical operations, our breakers deliver long-lasting reliability, even under frequent switching or in harsh operating environments.
By combining advanced arc-extinguishing technology with flame-retardant materials, Soltree DC MCBs not only protect against overloads, short circuits, and reverse currents, but also guarantee stable operation in renewable energy and industrial applications. This extended service life makes them an ideal choice for solar PV, energy storage systems, EV charging infrastructure, and DC distribution networks, where durability, safety, and efficiency are paramount.
7. Compact Design, Seamless Integration
The DC Mini Circuit Breaker is designed with a compact form factor, making it easy to install in standard distribution boxes without taking up excess space.
Fits Perfectly with Soltree Solutions
Thanks to its compact size and optimized layout, the DC MCB integrates seamlessly into solar combiner boxes, battery storage cabinets, and DC distribution panels. It not only saves valuable installation space but also pairs perfectly with other Soltree solutions such as DC surge protectors, isolators, and monitoring devices.
By combining multiple Soltree components in a single DC system, users can achieve comprehensive circuit protection, streamlined energy management, and consistent safety—all within a neat, space-saving design tailored for modern renewable energy and industrial applications.
What Our Customers Say
Trusted by global clients in residential, commercial, and industrial sectors.
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Have questions about our products or need assistance with a project? Our team is ready to help you find the perfect electrical solution.
Mail Address
jacky@cnsoltree.com
Phone/Whatsapp
+86 15658672325
Headquarters
Fenghuang Industrial Zone,BaishiTown,Yueqing Zhejiang P.R. China
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