Explore our heavy-duty industrial molded case circuit breakers and air circuit breakers engineered for high breaking capacity and dependable electrical performance.
Molded Case Circuit Breakers (MCCBs) rated at 500 Amperes (500A) represent a critical node in low-voltage electrical distribution networks. They bridge the gap between heavy mains electrical distribution panels and local branch control units. The primary role of a 500A MCCB is to ensure continuous current path safety, providing reliable overload and short-circuit protection for motors, industrial machinery, distribution panels, and power converters.
Modern electrical infrastructure demands circuit breakers capable of operating under highly variable current states and harsh environmental conditions. The 500A MCCB is designed utilizing advanced thermal-magnetic trip units or sophisticated micro-processor electronic trip units (ETUs). This enables precise control over protection curves, coordinating long-time delays, short-time delays, and instantaneous fault clearing parameters (LSI configuration). With breaking capacities reaching up to 100kA or higher at 400/690VAC, these units prevent catastrophic failure of industrial power grids during high-energy faults.
A premier original equipment manufacturer integrating state-of-the-art research, advanced design engineering, and complete testing systems for circuit breakers.
Founded officially in 2015, Acereare Electric operates through two wholly-owned manufacturing subsidiaries: RuiRui Electric and KeRui Electric. We inherit over 20 years of manufacturing craftsmanship passed down through two generations. As a leading ODM partner in China, we manage comprehensive production capacities for Molded Case Circuit Breakers (MCCB), Air Circuit Breakers (ACB), and premium copper circuit components.
Our focus lies on continuous technical accumulation. We provide global industrial customers, electrical contractors, and distribution networks with customizable, high-end power solutions designed to stand up to heavy-duty operational stresses.
Expert R&D Engineers
Skilled Workforce
Annual Sales (RMB)
Years OEM/ODM Expertise
Why sourcing your 500A MCCB requirements directly from our production plants ensures cost control, design ownership, and manufacturing precision.
Acereare manages everything from component tooling, structural copper stamping, moving contact fabrication, molding using premium dough compounds (DMC/BMC), and finished circuit breaker calibration under one operational framework.
We leverage industrial-grade PLM, BI, ERP, and MES software architecture to link material raw sourcing, production scheduling, electrical testing stages, and shipping logs. This guarantees end-to-end tracking of every manufactured batch.
With over 50 R&D engineers, we utilize advanced 3D component and mechanical simulation software to calculate arc behavior, thermal distribution, and structural stress before tool fabrication begins.
Deploying critical electrical hardware like a 500A MCCB requires rigorous adherence to safety standards. Every market has specific regulatory mandates. Our compliance strategy guarantees our clients face zero import or deployment obstacles.
Whether you require IEC 60947-2 compliance for European and international industrial markets, GB/T standards for Chinese grid compliance, or UL configurations for North American operations, Acereare is ready. We manage full compliance documentation, factory audit records, and test reports generated in our dedicated laboratories.
Industrial applications present harsh operating environments. Our 500A MCCBs are designed and tested to perform flawlessly under severe ambient conditions.
Utilizing high-impact, low-temperature resistant structural resins and customized mechanical lubricants. Verified performance down to -40°C with official laboratory low-temperature test reports.
Ideal for docks, marine ships, and seaside wind power stations. Our components undergo 72-hour salt spray testing on complete machines and 48-hour testing on assemblies to ensure corrosion protection.
At altitudes above 2000m, dielectric properties of air and cooling performance degrade. We provide complete derating coefficient guides to recalculate insulation and thermal tolerances safely.
Tested inside our +55°C constant-temperature experimental chambers. Features thermal barrier coatings, high-grade moving copper components, and specialized anti-oxidation contact interfaces.
Equipped with microprocessors for edge computing, high-precision power metering, and communication protocols (Modbus, RS485). Enables remote control and predictive maintenance operations.
High adaptability within modular distribution boards. Ensures reliable overcurrent protection for air conditioning units, light loads, and commercial building backup generators.
Partnering with Acereare grants access to a massive manufacturing facility. Expand your brand's presence in international markets with tailored circuit protection devices.
We provide authorized trademark laser engraving, custom-branded packaging designs (inner boxes, outer master cartons), and product color adjustments to match your corporate identity.
Collaborative structural design to change dimensions, internal structures, or accessory slots (auxiliary contacts, shunt trips, motor operators) to fit specific target requirements.
More than 150 sets of testing equipment, including physical labs and contact resistance testers. Over 20 dedicated QC engineers monitor incoming material checks (IQC) through final test benches (FQC).
Key information regarding technical specifications, selection, and localized applications of our molded case circuit breakers.
Complete your electrical grid system setup with our high-quality matching accessories, manual operators, and moving contacts direct from China.
Acereare's products and factory systems are fully certified by local and international testing organizations.
AceReare
