Pioneering Next-Generation Renewable Energy Safety & High-Voltage Electric Control Infrastructure Globally
Explore our premium select range of high-efficiency ACBs, advanced thermal-magnetic MCCBs, and crucial system components engineered for extreme environments.
Founded in 2015, Acereare Electric operates through its two wholly-owned subsidiaries, "RuiRui Electric" and "KeRui Electric". As a professional original manufacturer integrating R&D, production, and sales, we specialize in high-performance molded case circuit breakers (MCCB), air circuit breakers (ACB), and structural copper component stamping.
With over 20 years of craftsmanship inherited by two generations, our manufacturing excellence started long before our official corporate consolidation in 2015. We possess solid technical accumulation and a mature production ecosystem that places our factory among the top tier of OEM/ODM circuit breaker manufacturers in China. Today, we are strategic partners to nearly 100 high-end domestic and global electrical brands.
The global transition from traditional 400V grid configurations to high-voltage solar infrastructures—such as 800VAC and 1500VDC systems—presents unique challenges for electrical safety and isolation. In modern centralized utility-scale plants and large commercial solar arrays, string inverters are rapidly scaling up to output voltages of 800VAC or 1500VDC to minimize transmission loss ($I^2R$ loss) and reduce copper cabling cost. Standard utility circuit breakers fail to meet the performance criteria required to handle the elevated thermal stress and intense electric arc energy characteristics of these higher voltage levels.
In high-voltage solar setups, the distance between inverter systems, combiner boxes, and the main grid substations is often long. Operating at 800VAC reduces electrical current proportionally, lowering cable losses and enabling thinner, lighter cabling. However, this higher operational voltage calls for circuit protection units designed with high dielectric strength and advanced arc-extinguishing systems. When a fault occurs in an 800VAC system, the ionized gas generated must be cooled down and extinguished faster than in traditional 400VAC panels to prevent catastrophic failure or fire hazards.
Molded Case Circuit Breakers designed for 800V PV systems employ specialized engineering features to counter the severe physical loads of high-voltage faults. These features include:
• Magnetic Blowout Structures: Integrated permanent magnets redirect the electric arc directly into the arc splitter plates.
• Enhanced Arc Chutes: Specially structured steel-plate arc chambers split, cool, and extinguish high-energy electric arcs in milliseconds.
• High-Performance Polymer Shells: Glass fiber-reinforced unsaturated polyester resin (BMC/SMC material) provides high temperature endurance, strong dielectric strength, and resists tracking under fault conditions.
| Parameters | Standard MCCB (400V - 690V) | PV Specialized MCCB (800V - 1140V) |
|---|---|---|
| Max Operational Voltage ($U_e$) | Up to 690VAC | 800V / 1000V / 1140V AC/DC |
| Rated Insulation Voltage ($U_i$) | 800V to 1000V | 1250V to 1600V |
| Impulse Withstand Voltage ($U_{imp}$) | 8kV | 12kV |
| Arc Chamber Grid Density | Standard configuration | High-density steel grids with copper plating |
| Altitude Derating Threshold | Up to 2000m without derating | Optimized for high-altitude solar farms (up to 5000m) |
Thermal management is another core focus for high-voltage PV setups. The solar arrays are typically installed in arid, unshaded regions with extreme daily temperature fluctuations. A standard breaker installed in a sealed combiner box can easily reach internal temperatures exceeding 55°C. Acereare Group designs its 800V PV MCCB lines using optimized moving contacts made of high-purity silver-tungsten alloy coupled with heavy-duty electrolytic copper parts. This guarantees low contact resistance, reducing operational temperature rise and preventing contact welding during high short-circuit events.
Discover how our smart manufacturing facilities deliver precision, speed, and cost advantages for global circuit breaker projects.
One-stop production incorporating six core processing techniques. Equipped with high-precision automated assembly lines and specialized robotic welding machines to maintain uniform tolerance controls.
Our engineering division houses over 50 specialists. Utilizing 3D CAD modeling, FEA mechanical simulation, and digital emulation, we complete over 50 custom projects annually.
Operating two dedicated component and assembly factories. ERP and U8 logistics systems track each manufacturing process from raw material delivery to shipping.
Equipped with internal testing laboratories and more than 150 diagnostic instruments. Quality inspection procedures are tracked via integrated PLM, BI, and MES platforms.
Our circuit breakers are optimized to maintain stable performance under diverse, challenging real-world operating conditions.
Using specialized low-temperature greases and high-durability mechanical springs, our systems undergo rigorous testing down to -40°C to support reliable operation in sub-zero climates.
Designed with anti-corrosive coatings on metal components and tested for over 72 hours under continuous salt spray, preventing performance degradation in coastal solar arrays.
At elevations exceeding 2000 meters, low air density affects insulation properties and heat dissipation. Our breakers are calculated and calibrated using high-altitude derating scales.
Optimized for sub-distribution panels, residential solar battery storage systems, and heat pumps, ensuring reliable short-circuit and overload protection.
Our breaker mechanisms utilize thermoset plastic housings and heat-resistant alloys, validated via testing at 55°C to handle heat inside sealed outdoor enclosures.
Features embedded current sensors and network telemetry protocols, enabling remote grid monitoring, diagnostics, and precise metering of renewable energy distribution.
Supporting your business from prototype design to mass production through structured manufacturing services.
• Custom brand marks and product markings to strengthen market presence.
• High-performance raw materials to enhance long-term field reliability.
• Fast prototyping to accelerate project approvals and market entry.
• Mold design and stamping tooling development (refundable on bulk orders).
• Electrical parameter adjustments for targeted application scenarios.
• Support with national electrical compliance testing and local certifications.
• Laser etching and packaging solutions for authorized brands.
• Custom catalogs, documentation, and product datasheets.
• Flexible order quantities to support product line expansions.
Acereare designs, stamps, and builds both complete systems and individual internal metal components.
The ARW1 series air circuit breaker is designed for power distribution systems operating up to 690V, with rated currents from 400A to 6300A. It provides high selective protection, integrated telemetry, and remote-control features via open communication interfaces to integrate with automated grid management systems.
Our production facilities maintain global compliance, verified by internationally recognized test certificates.
Practical electrical engineering advice and product specifications for global utility scale system integrators and electrical buyers.
Explore our targeted selection of solar-specific circuit breakers, metal contacts, and accessories designed for demanding applications.
AceReare
