Explore our hot-selling air circuit breakers, molded case circuit breakers, and core replacement parts engineered to international standards.
Founded officially in 2015, Acereare Electric operates on a legacy of over 20 years of electrical switchgear and circuit breaker craftsmanship. With two wholly-owned subsidiaries, RuiRui Electric and KeRui Electric, we have established our rank as a top-tier ODM and OEM manufacturer in China. We specialize in designing, manufacturing, and distributing robust Molded Case Circuit Breakers (MCCB), smart Air Circuit Breakers (ACB), and an extensive catalog of high-precision internal and external components.
Modern electrical grids rely heavily on Air Circuit Breakers (ACBs) as the primary protection mechanism for high-power industrial environments, commercial building complexes, and utility substations. The growing demand for reliable power distribution in critical infrastructures like data centers, high-capacity factories, and hospital systems has placed greater technical demands on ACB parts. Critical components such as silver-alloy moving and fixed contacts, robust drawer bases (cradles), and high-performance undervoltage releases must operate flawlessly to prevent catastrophic electrical fires and gear destruction.
As smart grid integration accelerates globally, the commercial market is shifting from traditional, purely mechanical trip units to intelligent electronic trip units offering LSIG (Long-time, Short-time, Instantaneous, Ground fault) protection, real-time energy metering, and edge computing capabilities. China has emerged as the premier manufacturing hub for these advanced components, balancing high metallurgical quality, precise automated assembly, and optimized cost structures.
At the center of any air circuit breaker's interrupting capacity is its contact system. When a fault current arises, the contacts must part rapidly under heavy spring tension, drawing an electric arc into the arc chute. Acereare Electric utilizes advanced silver plating techniques (such as our 250A Moving Contact with Silvering) to ensure minimal contact resistance and prevent local overheating under continuous rated currents. The metal stamping processes are performed using high-tonnage progressive dies, ensuring strict dimensional tolerances that prevent mechanical jamming over thousands of open-close cycles.
Aligning modern supply chain practices with rigorous quality assurance policies to build robust electrical protection devices.
One-stop production utilising six processing techniques. Equipped with high-precision fabrication gear, testing instruments, and over 10 manual and automated assembly lines.
Over 50 R&D engineers with 5+ years of industry experience. Expertise in 3D CAD modeling, structural simulation, and electrical arc testing. Over 50 R&D projects delivered yearly.
Operating two production plants to ensure seamless parts fabrication and complete switchgear assembly. Synchronized workflow using integrated U8 and ERP business platforms.
Strict multi-stage testing with 150+ instrumentation setups and 20+ QC specialists. Integrated tracking utilizing PLM, BI, ERP, and MES software modules.
Acereare electrical systems are designed and tested to withstand structural, chemical, and thermal challenges across key industrial sectors.
Utilizing low-temperature-grade raw materials and specialized low-temp lubricants. Circuit breaker parts feature thickened protective coatings and are verified by rigorous -40℃ environmental test reports.
Components undergo extensive testing—72 hours for complete systems and 48 hours for sub-assemblies. Protects marine switchgear, port crane power lines, and seaside docks against high humidity and aggressive corrosion.
For installations exceeding 2000m altitude, we provide customized high-altitude derating coefficients, adjusting clearance distances and dielectrics to compensate for thin air and reduced heat dissipation.
Acereare MCCBs offer compact, reliable sub-distribution protection. Engineered to protect appliances and light commercial systems from damage caused by overloading and short circuits, ensuring system uptime.
Controllers feature insulating barriers, while iron/copper parts are treated to resist damp heat. Circuit breakers undergo continuous operational testing in our specialized 55℃ environmental chambers.
Advanced MCCBs and ACBs integrated with dual-core processors to support remote measurement, status feedback, edge computing, and communication protocols (Modbus, Profibus, etc.) for automated control centers.
Go inside our production facility to see how raw metal sheets, silver contacts, and engineering plastics are transformed into top-tier, international-grade circuit breakers.
We believe in absolute transparency and welcome third-party audits and direct engineering inspections from our global clients.
Whether you require minor design adjustments or a completely new, ground-up component design, we provide clean, reliable solutions.
Analyze requirements and recommend products.
Provide 3D drawings, simulation data, and advice.
Finalize specifications, pricing, and timelines.
Execute production with strict quality control.
Pack, clear customs, and arrange logistics.
How Acereare Electric is preparing for the next generation of smart grids, green infrastructure, and ultra-high reliability systems.
As RoHS and REACH regulations tighten worldwide, we are continuously reducing our reliance on cadmium and lead alloys within breaker parts. Our ongoing research centers on developing high-durability copper-tungsten and silver-nickel contacts that maintain excellent conductivity without compromising environmental standards.
Traditional mechanical air circuit breakers are limited by physical opening speeds. The industry is moving toward hybrid architectures that combine mechanical isolation with solid-state silicon-carbide (SiC) switching. This tech path will reduce clearing times from milliseconds to microseconds, preventing severe arc flashes and protecting sensitive digital devices.
By integrating micro-sensors directly into the drawer base and the operating mechanism, future ACBs will track contact wear, trip-coil temperature, and mechanical friction in real time. Rather than waiting for a failure, systems will alert operators to replace components, reducing downtime and maintenance costs.
Our designs undergo strict testing in international laboratories to ensure compliance with IEC, CE, and GB standards.
Get answers to common questions about Air Circuit Breaker parts sourcing, installation, and custom engineering.
Silver has excellent electrical conductivity and resists oxidation under high temperatures. Plating copper contacts with silver minimizes contact resistance, prevents thermal runaway, and extends the operational life of the breaker under high continuous current loads.
Drawer bases allow for hot-swapping during maintenance. A drawer-type circuit breaker can be easily isolated or removed without disconnecting the main busbars, improving safety and minimizing system downtime.
For standard components with custom branding, lead times typically range from 2 to 3 weeks. For complex custom mold developments (such as customized contact shapes or unique enclosures), mold construction and pilot testing takes 4 to 8 weeks, with costs refundable based on production volume.
Altitudes above 2000m feature thinner air, which reduces heat dissipation and dielectric insulation strength. We supply custom high-altitude derating tables to calculate the necessary adjustments for voltage and current parameters, ensuring safety and compliance.
Acereare Electric offers complete circuit breakers and component solutions, from industrial trip units to thermal magnetic breakers.
AceReare
