Explore our wholesale line of premium Air Circuit Breakers (ACB) and Molded Case Circuit Breakers (MCCB) optimized for high capacity distribution networks.
Acereare Electric, founded in 2015, operates two wholly-owned subsidiaries: RuiRui Electric and KeRui Electric. As a leading, professional original manufacturer, we integrate advanced R&D, vertical manufacturing, and global sales, specializing in high-performance Molded Case Circuit Breakers (MCCB), Air Circuit Breakers (ACB), and structural electrical components.
With over 20 years of manufacturing craftsmanship inherited across two generations, our operation is grounded in engineering heritage. Our strategic manufacturing footprint ranks us among the top ODM partners in China, serving grid infrastructure, renewable energy deployments, and heavy industrial applications.
Modern electrical distribution systems require uncompromising reliability. Circuit breakers serve as the final line of defense against overcurrents, short circuits, and ground faults. While withdrawable (drawer-type) breakers offer modular flexibility for rapid maintenance, Fixed Circuit Breakers remain the cornerstone for commercial facilities, heavy industrial plants, and renewable energy systems due to their unmatched mechanical stability, lower internal contact resistance, and highly competitive cost-to-performance ratio.
In high-current environments (ranging from 100A to 6300A), heat dissipation is a primary concern. Drawer-type systems rely on cluster contacts that slip into busbar cassettes. These connection interfaces, over time, can succumb to mechanical wear, oxidation, and vibration, which increases contact resistance ($R_{contact}$). Fixed circuit breakers, on the other hand, are bolted directly to the main busbars. This creates a solid, stable connection that minimizes contact impedance.
According to Joule’s Law ($P = I^2 R$), even micro-ohm reductions in contact resistance significantly decrease thermal output at continuous rated currents. This makes fixed configurations inherently cooler under load, minimizing the need for forced ventilation inside switchgear enclosures.
Our fixed breaker range (including the ARW1 and ARXM3 series) is designed with high ultimate short-circuit breaking capacity ($I_{cu}$) and service short-circuit breaking capacity ($I_{cs}$). When a fault occurs, the contacts must separate within milliseconds. This creates an intense electric arc that must be drawn away, cooled, and extinguished.
Our R&D team uses advanced electromagnetic simulation tools to design our arc-extinguishing chambers. Using high-gassing polymers and refined splitter plates, the arc is driven rapidly into the chute, cooling it before it can damage structural components. This level of protection is essential in high-voltage industrial setups (up to 690VAC or 1500VDC).
With the expansion of photovoltaic power plants operating at voltages up to 1500VDC, circuit breakers face new challenges. DC arcs do not have a natural zero-crossing point, making them much harder to extinguish than AC arcs. Our ARM6DC series uses optimized permanent magnet blowouts to drive the arc into the extinguishing chamber, protecting high-voltage DC combiner boxes and central inverters.
We combine decades of technical expertise, vertical supply chain integration, and strict quality assurance to support global infrastructure projects.
We provide a complete one-stop service with six processing techniques, high-precision automated production equipment, advanced testing instruments, and over 10 manual and automated assembly lines.
Our team includes over 50 R&D engineers, each with more than 5 years of experience. We design parts, molds, and complete assemblies in 3D, completing over 50 product development projects annually.
Operating two specialized component and assembly factories, we streamline workflows across all departments using ERP and U8 software, ensuring on-time delivery for wholesale and OEM orders.
We enforce a strict, multi-step quality control process. Our in-house testing lab uses over 150 instruments and is staffed by 20+ inspectors, managed through PLM, BI, ERP, and MES software.
Acereare circuit breakers are engineered and certified to perform under extreme physical and environmental stresses worldwide.
Our circuit breakers feature low-temperature resistant structural polymers and specialized lubricants, along with thickened component coatings. They are certified by independent test reports to operate down to -40℃, ensuring reliable performance in cold climates.
Designed for docks, ships, and coastal installations. We conduct a 72-hour salt spray test on complete units and 48 hours on sub-assemblies to verify corrosion resistance. This protects critical equipment from failures caused by humid, saline marine environments.
At altitudes above 2,000 meters, thin air reduces dielectric properties and cooling efficiency. We calculate and apply altitude derating factors to the breaker's rated impulse voltage ($U_{imp}$) and breaking capacity, ensuring reliable operation up to 5,000 meters.
Our compact molded case circuit breakers provide reliable protection for building electrical systems. They shield appliances and consumer electronics from damage caused by short circuits and overloads, while also offering easy installation in standard panels.
Built with heat-resistant materials and thermal insulation coatings, our copper and iron components are treated to resist moisture, corrosion, and heat. Performance is validated in our 55℃ environmental chambers to prevent nuisance tripping in hot environments.
Equipped with microprocessors, our smart MCCBs provide protection, high-accuracy current and voltage metering, and edge-computing communication. They support common network protocols, enabling real-time remote monitoring and automated energy management.
A broad portfolio of circuit protection systems and components, manufactured under one roof to guarantee seamless integration.
Reliable circuit protection for industrial and commercial distribution networks. Offers excellent short-circuit and thermal overload protection.
Combines standard overcurrent protection with highly sensitive residual current monitoring to prevent electrical fires and protect operators.
Thermal-magnetic MCCBs designed to withstand heavy industrial overloads, high starting currents, and harsh operational conditions.
Equipped with microprocessors, the ARM3E series provides adjustable, high-accuracy trip curves to optimize selectivity in complex networks.
Plug-in and drawer-base MCCBs designed for modular switchboards, enabling quick component swaps and minimizing downtime during maintenance.
Our high-capacity industrial range. Features advanced breaking performance and compatibility with solar installations and auxiliary control units.
Designed for AC 50Hz networks with rated voltages up to 690V and currents from 400A to 6300A. Features high-accuracy selective protection, open communication interfaces, and support for remote sensing, adjustment, control, and signaling.
Heavy-duty, smart air circuit breakers designed for main distribution panel boards, offering advanced thermal profiling and fault logging.
We manufacture critical internal components, including metal stamping parts and silver alloy contacts, to maintain strict quality control at the component level.
We provide comprehensive technical support and manufacturing services designed to help global electrical engineering brands, distributors, and panel builders scale their businesses.
Enhance your brand visibility with custom logo printing and laser engraving. We use premium raw materials to help build customer trust, while our rapid prototyping service accelerates your time-to-market for new designs. Clever mechanical and structural features also help differentiate your products from standard market offerings.
We design and develop custom product molds and functions (with refundable engineering costs). We also assist in securing international test reports and compliance certificates. Our support team provides a 24-hour response loop, serving as your dedicated offshore manufacturing partner.
We offer customized laser printing for licensed trademarks, along with bespoke packaging options (such as custom outer boxes, inner cartons, and catalog design). We also accommodate lower minimum order quantities (MOQ) to help clients validate new markets with reduced financial risk.
Our manufacturing model is designed to minimize risk and stabilize costs for our clients. By running two specialized factories—one for precision metal stamping and component processing, and another for final assembly and calibration—we maintain direct control over key parts of our supply chain.
Using ERP and U8 software, we track production from incoming raw materials to final functional testing. This data-driven approach allows us to optimize assembly schedules and maintain high quality standards. Additionally, our factories are located near major raw material suppliers, helping us maintain stable shipping schedules even during shifting market conditions.
Our future designs focus on digitalization and environmental sustainability. Our engineering team is currently testing new eco-friendly, halogen-free thermoplastics and expanding our line of smart micro-grid breakers. These upcoming models will support real-time thermal forecasting and direct Ethernet communication, helping grid operators build more responsive power distribution systems.
Our products are thoroughly tested and certified to comply with major international electrical standards.
Get professional answers to common questions about selecting, applying, and operating our circuit breakers.
Select from our widely-deployed industrial MCCBs, intelligent ACBs, and system accessories designed for global distribution requirements.
We prioritize our customer's long-term success, technical requirements, and product reliability. Get in touch with our engineering team today to request a quote or discuss a custom solution.
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