Explore our core product line of intelligent type ACBs and high-performance MCCBs engineered for low-voltage switchgears and complex energy systems.
Founded in 2015, Acereare Electric operates alongside its two wholly-owned subsidiaries, RuiRui Electric and KeRui Electric. Spanning generations of structural and electrical engineering craftsmanship, our enterprise delivers high-precision low-voltage circuit protection devices designed for modern utility, commercial, and heavy-duty industrial settings.
We specialize in the research, development, and high-capacity manufacturing of Air Circuit Breakers (ACB), Molded Case Circuit Breakers (MCCB), and premium electrical contact components. Our integrated vertical manufacturing system supports structural metal stamping, injection molding, trip unit configuration, and systematic quality screening, establishing us as a leading Chinese electrical ODM/OEM partner.
Understanding the engineering demands, breaking capacities, and critical configurations required for modern electrical distribution architectures.
Air Circuit Breakers (ACBs) operating at 400VAC and 690VAC form the backbone of industrial main distribution boards (MDBs). As primary incoming devices, they must interrupt massive fault currents while maintaining structural and insulation integrity. Modern energy grids demand high short-circuit breaking capacities (Icu) alongside service breaking capacities (Ics = 100% Icu) to minimize operational downtime.
The differentiation between 400V and 690V systems lies primarily in dielectric clearance, contact composition, and arc extinction efficiency. A 690V ACB is exposed to higher electrical stresses during circuit interruption, necessitating advanced arc-chute designs and materials that can withstand rapid thermal expansion without dielectric breakdown.
| Technical Parameters | 400V System Configuration | 690V System Configuration |
|---|---|---|
| Rated Operational Voltage (Ue) | AC 380V / 400V / 415V | AC 660V / 690V |
| Rated Current Range (In) | 400A to 6300A | 400A to 6300A |
| Ultimate Short-Circuit Breaking Capacity (Icu) | Up to 120kA | Up to 85kA |
| Rated Impulse Withstand Voltage (Uimp) | 12kV | 12kV |
| Trip Unit Technology | Microprocessor-based Intelligent Release | Intelligent Electronic / Harmonics Filtering |
| Standard Mechanical Endurance | 20,000 Cycles (Maintenance-Free) | 15,000 Cycles (Enhanced Contact Alloys) |
Drawer-type ACBs are mounted on a slide-out chassis, facilitating seamless maintenance, testing, and replacement without de-energizing the main switchgear busbars. Safety shutters isolate the main busbar automatically when the breaker body is withdrawn, ensuring operator safety in critical data centers and hospital power distribution boards.
Fixed-type ACBs are bolted directly inside the switchgear compartment, offering a compact, cost-effective solution for systems where spacing is limited and maintenance shutdowns can be scheduled. Suitable for low-vibration environments and less critical sub-distribution setups.
Acereare custom designs circuit breakers to withstand harsh climates, high-vibration sites, and extreme thermal conditions worldwide.
Our breakers utilize low-temperature resistant lubrication, specialty structural polymers, and protective coatings tested down to -40℃. Engineered to ensure reliable mechanical spring release in sub-zero industrial applications.
Subjected to 72-hour salt spray tests for complete breakers and 48-hour testing for internal components. Designed to prevent copper oxidization and mechanism rust in offshore wind platforms and coastal dockyard grids.
For installations exceeding 2000 meters, where thin air reduces dielectric properties and cooling efficiency, we apply precise high-altitude derating coefficients to safeguard operation without dielectric flashovers.
High-reliability MCCBs safeguard household and commercial buildings against circuit overloads and short circuits. Focused on space-saving footprints, low noise levels, and elevated mechanical endurance.
Constructed with thermoset molding materials and anti-corrosive copper connections. Validated in environmental test rooms at 55℃ with thermal insulation layers to maintain calibration and prevent nuisance tripping.
Equipped with intelligent microprocessors and communication interfaces supporting Modbus and Profibus protocols. Enables real-time metering, edge computing analysis, remote parameter tuning, and telemetry reporting.
Equipped with 10+ automated assembly lines, integrated metal stamping, and specialized QA laboratories, we manage quality at every manufacturing stage.
We operate two manufacturing facilities utilizing six distinct processing techniques. Our setup includes high-precision metal stamping, customized plastic injection molding machines, automated testing workstations, and advanced product line systems integrated with enterprise-grade ERP and U8 software.
Equipped with an on-site testing facility containing over 150 dedicated testing instruments and staffed by more than 20 specialized quality controllers. Product development, materials sourcing, assembly, and final validation are managed through PLM, BI, ERP, and MES software architectures.
Our circuit breakers are certified and tested to conform to strict quality guidelines, ensuring compliance for international infrastructure projects.
We partner with global electrical switchgear builders, utility operators, and distributors to customize, print, and package circuit breakers tailored to their local markets.
As global electrical distribution moves toward decarbonization, digitalization, and decentralized energy resource (DER) integration, our R&D team is updating breaker architecture.
Edge Intelligence & Cloud Integration: Future iterations of the ARW1 and ARM6 series will incorporate embedded edge-computing microcontrollers. Instead of just monitoring overcurrent conditions, these devices analyze wave-shape distortions and harmonic frequencies to predict mechanical deterioration and track contact wear before a fault occurs.
Transitioning to High-Voltage Renewables (AC 800V - AC 1140V): With solar photovoltaic inverters shifting from 1000VDC to 1500VDC, AC collector grids are migrating toward AC 800V and AC 1140V. To meet this demand, we are testing custom contact materials and specialized arc chutes designed for high operational voltages.
Eco-Friendly Circuit Interruption: Recognizing the industry's shift away from greenhouse gases, our research focuses on high-pressure air-blast technologies and eco-conscious plastic resins. This helps minimize environmental impact without compromising dielectric properties or breaking speed.
Get answers to common technical, commercial, and ordering questions regarding 400V/690V Air Circuit Breakers.
Discover our comprehensive range of high-voltage MCCBs, solar breakers, and high-precision stamping parts manufactured in-house.
Acereare Electric specializes in low-voltage and medium-voltage distribution systems, offering certified, high-reliability products, engineering support, and customizable OEM/ODM solutions.
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