AC 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 AC MCB Products
Reliable miniature circuit breakers for safe and efficient power protection.
Model:SLA-63 1P
- Compact single-phase protection
- Prevents overload & short-circuit
- Easy to install in home use
Model:SLA-63 2P
- Dual-pole safety for circuits
- Protects phase + neutral lines
- Ideal for residential & office
Model:SLA-63 3P
- Three-phase protection system
- Handles higher power loads
- Reliable for industrial use
Model:SLA-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 AC miniature circuit breakers (MCBs) designed for residential, commercial, and industrial use. By integrating advanced technology, strict quality control, and efficient production, our MCBs deliver 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, and build smarter power distribution systems.
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
Thermal-magnetic tripping protects against overloads and short circuits with high breaking-capacity options (4.5kA / 6kA / 10kA) and compliance with IEC/EN 60898-1.
Flexible Configurations
Choose the setup that fits your system: 1P/2P/3P/4P, 6–63A ratings, and AC 230/400V. 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 AC Mini Circuit Breaker (MCB)?
- 2. Key Functions of AC Mini Circuit Breakers (MCBs)
- 3. How AC Mini Circuit Breakers Work (Internal Structure)
- 4. Which MCB Fits Your System?
- 5. Flame-Retardant Protection for Maximum Safety
- 6. Wide Temperature Resistance for Reliable Performance
- 7. Compact Design, Seamless Integration
1. What Is an AC Mini Circuit Breaker (MCB)?
An AC Mini Circuit Breaker (MCB) is a vital safety device that automatically switches off the electrical circuit during abnormal conditions, such as overloads or short circuits, ensuring reliable protection for people and equipment.
Reliable Protection for Every Circuit
Safe · Compact · Dependable
The AC Mini Circuit Breaker combines dependable protection with simple, 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 circuit conditions at a glance. Designed for homes, offices, and industrial systems, AC MCBs ensure consistent safety, compact installation, and long-term reliability.Perfect for modern homes, rental properties, and smart commercial systems, WiFi breakers are revolutionizing the way power is controlled, monitored, and maintained.
2. Key Functions of AC Mini Circuit Breakers (MCBs)
AC 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. How AC Mini Circuit Breakers Work (Internal Structure)
Inside every AC Mini Circuit Breaker lies a carefully engineered mechanism that ensures fast response, reliable protection, and long-term safety for your electrical system.
Core Components for Reliable Safety
The internal design of an AC Mini Circuit Breaker integrates multiple safety features, working together to detect faults and cut off power instantly:
- Linkage Mechanism:
Ensures precise and stable switching, guaranteeing consistent circuit control.
- Short-Circuit Protection:
Instantly trips the breaker to stop dangerous surges and prevent damage.
- Fast Arc Extinction:
Rapidly eliminates electrical arcs during interruptions, reducing fire risks.
- Overload Protection:
Cuts off the circuit when current exceeds safe levels, protecting wiring and devices.
4. Which MCB Fits Your System?
Select from 1P, 2P, 3P, or 4P to match your wiring and load requirements. One family, multiple configurations—same trusted protection.
| Specifications | Available Options |
|---|---|
| Pole Configuration | 1P, 1P+N, 2P, 3P, 4P |
| Rated Current (A) | 1, 2, 3, 4, 6, 10, 16, 20, 25, 32, 40, 50, 63, 80, 100, 125 |
| Rated Voltage | 230V / 400V AC |
| Breaking Capacity | 6kA / 10kA |
| Operating Temperature | -25°C to +70°C |
| Standards Compliance | IEC 60898, EN 60898 |
5. Flame-Retardant Protection for Maximum Safety
AC 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 AC MCB is designed to withstand high temperatures and prevent the spread of fire in extreme conditions. This safety feature ensures stable operation even under heavy load or fault conditions, reducing potential risks for homes, offices, and industrial systems.
By combining fire resistance with electrical protection, AC MCBs deliver peace of mind, making them an ideal choice for environments where safety and reliability are top priorities.
6. Wide Temperature Resistance for Reliable Performance
AC 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, AC MCBs maintain dependable performance across a wide temperature range.
Low Temperature: Operates reliably even in harsh, freezing environments.
High Temperature: Withstands heat and heavy loads without compromising safety.
This durability makes them ideal for diverse applications—from residential homes in cold regions, to industrial and commercial facilities exposed to high temperatures. Wherever they are installed, AC MCBs provide uninterrupted protection, regardless of the climate.
7. Compact Design, Seamless Integration
The AC 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 small size and smart layout, the AC MCB integrates effortlessly into household or commercial meter boxes. It not only saves installation space but also pairs perfectly with other Soltree products such as voltage protectors, RCDs, and surge protectors.
By combining multiple Soltree devices in a single distribution panel, users can achieve comprehensive power protection, streamlined management, and consistent safety—all within a neat, space-saving design.
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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