Established in 2015, Acereare Group has consolidated its position as a pioneer in the design and automated production of high-performance molded case circuit breakers (MCCB) and air circuit breakers (ACB). Backed by the historical achievements of our two wholly-owned subsidiaries, "RuiRui Electric" and "KeRui Electric", we leverage over two decades of design expertise. This extensive heritage allows us to meet the specialized demands of global power transmission and electrical distribution grids.
Operating from our highly integrated production campuses in China, Acereare serves as a strategic ODM/OEM partner to nearly 100 Tier-1 industrial electrical companies globally. Our capabilities extend across the complete product lifecycle, from precision component metal stamping and tooling development to final calibration, environmental testing, and product certifications.
Modern electrical grids demand higher operational efficiencies. This shift requires equipment rated for higher operational voltages (Ue) like 800VAC, 1000VAC, and 1140VAC, especially in high-voltage PV solar systems and energy storage applications. Acereare delivers these high-reliability solutions at scale.
Selecting a circuit breaker requires a precise understanding of insulation levels, operational voltages, and dynamic arc interruption capacities. The term "voltage" in a circuit breaker context is not unified; instead, it encompasses several critical parameters governed by international standards (IEC 60947-2 & GB/T 14048.2):
The voltage at which the circuit breaker is designed to run continuously under standard operating conditions. Our units are rated up to 1140VAC, targeting renewable solar inverter and distribution sub-stations.
This is the reference voltage used to determine dielectric test parameters and leakage distances. High Ui ratings prevent insulation degradation under transient overvoltages.
Measures the circuit breaker's capability to withstand lightning and transient switching overvoltages without dielectric failure. Our designs achieve Uimp ratings up to 12kV.
For traditional low-voltage industrial infrastructure, 400V and 690V systems remain standard. However, the rise of large utility-scale photovoltaic (PV) solar installations, combined with high-capacity battery energy storage systems (BESS), has created a demand for higher operational voltages. Elevating voltages to 800V, 1000V, or 1140V allows engineers to minimize I²R losses, reduce copper cable sizing, and design more cost-efficient system installations.
Managing electrical arcs at high operational voltages requires enhanced design criteria. The higher the operational voltage, the greater the arc energy that must be managed. To counter this, our factories employ custom molding compounds, optimized arc chutes (with high mechanical toughness and gassing traits), and silver-alloy composite contacts. These design elements enable clean arc splitting and quenching, preventing re-strikes and prolonging electrical life.
| Application Area | Standard Volts (Ue) | Insulation Volts (Ui) | Impulse Volts (Uimp) | Primary Protection Solutions |
|---|---|---|---|---|
| Commercial / Light Industrial | 400V / 415VAC | 800V | 8kV | ARXM3 Series & ARM1 Series MCCB |
| Heavy Industrial & Wind Energy | 690VAC | 1000V | 12kV | ARW1 ACB Series & ARM3E Adjustable MCCB |
| Utility-Scale PV Solar & Microgrids | 800VAC / 1000VAC | 1200V | 12kV | Solar Type MCCB (OEM Dedicated) |
| Mining & Heavy Chemical Plants | 1140VAC | 1250V | 12kV | High-Voltage ARM5HU & Custom MCCB |
Standard electrical components are designed to operate under mild laboratory environments. However, industrial infrastructure and utility networks are often exposed to extreme climates. Acereare designs and manufactures circuit breakers engineered to withstand these environmental challenges, ensuring long-term reliability.
Standard circuit breakers can suffer from mechanical jamming, physical contact binding, and brittle plastic failure in sub-zero climates. Acereare integrates low-temperature structural steels, specialized low-temperature lubricants, and thickened thermal insulation barriers. Every unit is validated via test procedures in our environmental test rooms to guarantee reliable mechanical operation down to -40°C.
Coastal installations, shipboard machinery, and offshore docks face corrosive salt air that can compromise electrical contacts. Acereare offers anti-corrosion protection options, providing 72-hour salt spray resistance for fully assembled units and 48-hour testing for internal assemblies. Internal steel parts are plated and copper elements treated to prevent galvanic corrosion.
At high altitudes, lower air density reduces the dielectric strength and cooling efficiency of ambient air. To ensure reliability, we adjust the rated current and operational voltage settings using strict high-altitude derating curves. This calibration accounts for the reduced heat dissipation capacity of the air, preventing overheating.
Operating in high-ambient-temperature environments like desert PV farms and steel mills can accelerate thermal aging and lead to nuisance tripping. Acereare utilizes thermosetting bulk molding compounds (BMC) with high heat deflection ratings, combined with heat-resistant insulation layers, to ensure stable operation. Our constant-temperature chambers at 55°C help verify the thermal calibration curves of our breakers.
Next-generation distribution networks require real-time electrical telemetry. Acereare circuit breakers can be equipped with high-precision current transformers and built-in microprocessors. These smart units monitor voltage fluctuations, current profiles, active power, harmonics, and energy consumption. They transmit data via Modbus RTU or Profibus, enabling edge-computing and remote control capabilities.
Commercial structures and residential complexes present dynamic electrical load patterns. Our MCCB products provide protection against overload and short circuits. Features like mechanical interlocking protect secondary backup systems (such as emergency diesel generators), ensuring safety and avoiding hazardous cross-connections.
China’s electrical manufacturing ecosystem is recognized for its depth and integration. Acereare coordinates two production factories that handle everything from stamping raw metal parts to assembling finished machinery. By manufacturing stamping dies and structural molding components internally, we reduce supply chain dependencies and control costs.
Our operations utilize integrated ERP and U8 software to coordinate logistics, inventory management, and manufacturing across departments. From initial material feed to final assembly, this system maintains material traceability and optimizes operational workflow.
Additionally, we deploy PLM, BI, and MES database software to track unit assembly steps and calibration results. Our testing facility features over 150 dedicated testing instruments managed by 20 quality inspectors. Every batch of circuit breakers undergoes rigorous mechanical, dielectric, and overcurrent testing before shipping.
The electrical landscape is transitioning toward decentralized generation, digital grid management, and carbon-neutral materials. Our long-term R&D initiative guides the evolution of our product families, ensuring they align with global technological trends:
Traditional mechanical circuit breakers are limited by physical contact separation speeds. To address this, we are developing hybrid and solid-state circuit breaking designs. By using wide-bandgap semiconductor devices, these units can interrupt short-circuit currents in microseconds, virtually eliminating electrical arcing.
Environmental responsibility is core to our corporate strategy. We are replacing halogenated flame retardants and standard plastics with biodegradable, recyclable, and high-performance polymers. This shift reduces our environmental footprint while maintaining structural and mechanical integrity.
Our future models will feature enhanced edge-computing capabilities. Equipped with built-in sensors, these breakers will capture high-frequency current profiles to predict thermal wear, contact degradation, and potential grid failures before they occur. This data will integrate with cloud-based asset management systems to support predictive maintenance schedules.
Acereare offers extensive support to OEM and ODM clients worldwide, helping you shorten time-to-market and build brand equity:
We provide custom logo application (laser printing and engraving), customized packaging designs, and dedicated product catalogs. These services help strengthen brand recognition and market positioning.
Our engineering team assists with housing mold design, custom electrical termination layouts, and specialty functional modifications, ensuring our breakers integrate seamlessly into your systems.
We support long-term co-development projects. From initial conceptualization to manufacturing, our R&D department works to deliver specialized electrical protection solutions for your applications.
Additionally, our engineers support the regulatory testing process. We provide testing documentation and coordinate with international certification bodies (CE, CB, CCC, and ISO standards) to ensure compliance with local electrical safety regulations.
AceReare
