Direct-factory industrial-grade power solutions: from precise metallic contact assemblies to finished high-performance protective devices.
In modern electrical distribution networks, Molded Case Circuit Breakers (MCCBs) serve as the primary line of defense against thermal overloads and short circuits. Within these critical devices, the MCCB metal welding parts act as the core electro-conductive conduits. The reliability of these assemblies determines the breaker's overall switching performance, arc resistance, short-circuit breaking capacity ($I_{cu}$ / $I_{cs}$), and long-term operating life.
As a specialized high-volume supplier, Acereare integrates material science, high-speed progressive metal stamping, and automatic brazing to manufacture moving and fixed contact structures. Our components withstand extreme thermal shocks and magnetic repulsion forces during short-circuit faults.
Integrating R&D, manufacturing, and global supply chains for circuit breakers and metal components since 2015.
Acereare Electric, founded in 2015, operates two wholly-owned subsidiaries: RuiRui Electric and KeRui Electric. As a specialized original equipment manufacturer (OEM/ODM), we integrate design, metal welding, plastic molding, and complete breaker testing under a single quality control standard.
With over 20 years of manufacturing craftsmanship passed down through two generations, we have scaled our operations to serve tier-1 electrical brands globally. Our engineering competence covers custom sheet metal tooling, resistance projection welding, automatic brazing, and high-conductivity plating.
Ensuring high precision, product reliability, and vertical supply integration for international procurement.
One-Stop Service across six specialized processing techniques. Our facility houses high-precision progressive dies, automatic copper punching machinery, and advanced spot-welding rigs to support high-volume manufacturing.
Over 50 dedicated R&D engineers with extensive experience in low-voltage electrical modeling. We design custom contacts and copper linkages utilizing 3D CAD modeling, FEA thermal simulation, and mechanical cycle testing.
Operating two industrial plants to handle custom metal components alongside complete assembly. Order flow, raw materials tracking, and delivery dates are coordinated through unified Enterprise Resource Planning (ERP) software.
An internal laboratory featuring more than 150 diagnostic instruments. In-house testing monitors weld shear strength, silver-layer thickness, electrical resistance, and mechanical wear cycles to prevent field failures.
To achieve consistency across millions of welded components, our factory utilizes automation systems integrated with advanced resource software:
Custom-tailored material selections and protective coatings designed for challenging environments.
We formulate metal components and low-viscosity greases rated for operation down to -40℃. Structural elements undergo low-temperature impact testing to confirm performance in cold climates.
Our metal parts withstand marine atmospheres. We perform up to 72 hours of salt spray testing for complete machines and 48 hours for sub-assemblies to protect dockside power systems against high humidity and salt.
For installations exceeding 2000 meters, we evaluate air insulation capacity and heat dissipation to supply suitable technical charts and de-rated performance parameters.
Providing components engineered for high mechanical endurance, protecting household appliances against short-circuits with consistent switching cycles.
Utilizing high-temperature stable materials and specialized plating barriers, our components undergo aging tests in a 55℃ environment to confirm stable electrical contact resistance.
Supporting high-precision metering and edge computing. Our assemblies provide low contact voltage drop, assisting integrated smart grids with reliable current measurement data.
Developing contact materials for low power dissipation and high erosion resistance.
Modern MCCB contacts require high thermal conductivity and high hardness. We weld oxygen-free copper (T2 grade, copper content > 99.95%) backings with silver alloy contact tips ($AgSnO_2$, $AgNi$, or $AgCdO$). Silver-tin-oxide ($AgSnO_2$) is widely selected for its high environmental resistance, stable contact resistance, and anti-welding properties.
We deploy specialized joining techniques to balance performance and cost:
Our current research is directed toward silver-free alternatives and nano-structured copper substrates. These developments aim to maintain low electrical contact resistance while reducing dependency on precious metals.
Meeting international regulations, quality standards, and procurement requirements.
Our fabrication practices comply with IEC 60947-2 and UL 489 standards. Complete circuit breakers and metallic sub-assemblies regularly undergo testing for CE, CCC, and CB safety certifications.
In alignment with global ecological directives, all contact alloys and copper surfaces comply with RoHS (Restriction of Hazardous Substances) and REACH regulations.
We offer multiple shipping arrangements (FOB, CIF, DDP) and technical assistance to integrate into overseas production systems, backed by rapid sampling services.
Providing complete customization from initial copper thickness to final contact configuration.
Enhance brand recognition using custom laser marking, personalized product catalogs, and customized packaging options. We focus on raw material quality to help secure consistent performance.
We design custom progressive dies, tooling components, and circuit configurations. Testing certificates and prototype evaluation options are available to assist with verification cycles.
We supply specialized sub-assemblies for specific ratings and applications. We offer customized mechanical linkages, tailored housing dimensions, and testing files for high-voltage and solar systems.
Defining application ratings and drawing dimensions.
Developing customized alloy contacts and tooling.
Confirming quality metrics and final prices.
Continuous manufacturing under MES monitoring.
Final quality testing, packaging, and dispatch.
Common technical inquiries regarding materials, processing, tolerances, and ordering.
High-breaking capacity and adjustable trip unit MCCBs, engineered with precision welded internal copper contacts.
AceReare
