Explore our state-of-the-art power distribution breakers and auxiliary parts sourced directly from China's premier electrical assembly lines.
In low-voltage industrial distribution infrastructure, the 50 Ampere Molded Case Circuit Breaker (MCCB) represents a fundamental engineering node. Serving as a crucial protective boundary, these devices shield electric motors, light industrial machinery, control panels, and branch circuits from overload and short-circuit hazards. At Acereare Electric, we draw upon over 20 years of manufacturing experience to provide highly reliable, industrial-grade 50A MCCBs that exceed standard commercial safety ratings.
Unlike standard Miniature Circuit Breakers (MCBs), a dedicated 50A MCCB is built into a larger, structurally robust frame size (typically rated up to 125A or 250A). This design offers superior thermal management, high-performance arc chutes, and robust electromagnetic trip units. Understanding the technical specifications of a 50 Ampere MCCB is essential for global procurement officers, electrical distributors, and industrial switchgear assembly factories to select the correct protection solution.
Features adjustable bimetallic strips for overload thermal protection and electromagnetic coils for instantaneous magnetic protection against short circuits.
Supports ultimate short-circuit breaking capacity (Icu) options ranging from 25kA to over 100kA at 400V/690V, ensuring panel safety under severe faults.
Available in 2-pole, 3-pole, and 4-pole designs to support single-phase commercial systems and complex balanced three-phase industrial networks.
Founded in 2015, Acereare Electric operates through two wholly-owned subsidiaries, RuiRui Electric and KeRui Electric. Our manufacturing heritage spans over 20 years, inheriting craft skills across two generations. Today, we are recognized as a leading OEM/ODM circuit breaker manufacturer in China, delivering high-precision Molded Case Circuit Breakers (MCCB), Air Circuit Breakers (ACB), and premium component accessories.
Our dual-factory manufacturing model separates dedicated component stamping and molding from complete machine assembly. This approach optimizes production speed, maintains consistent high quality, and ensures delivery reliability. Guided by the core principle of win-win cooperation, we support global distribution networks by providing technical service, robust safety products, and factory-direct pricing.
Leveraging vertically integrated production and rigorous Quality Assurance to secure your supply chain.
We offer complete vertically integrated production, utilizing six distinct metal processing techniques, automated tooling, and over 10 manual and automated assembly lines.
Our team of 50+ engineers utilizes 3D CAD and finite element analysis to manage mold designs, moving part simulations, and over 50 new product development projects annually.
We manage production across two manufacturing facilities, integrating planning, procurement, and logistics through ERP and UFIDA U8 software systems.
Our process includes multiple inspection points using over 150 test instruments, 20+ QC inspectors, and digital tracking via PLM, BI, and MES software.
We engineer specialized circuit breaker variants to meet challenging operational environments around the world.
-40°C Tested
We construct units using low-temperature resistant polyamides, apply low-temperature lubricants, and coat structural parts to protect against thermal contraction and cracking down to -40°C.
72H Salt Spray
Designed to withstand humid, saline coastal air. We conduct 72-hour salt spray testing on complete assemblies and 48-hour testing on sub-assemblies to protect components in dock and marine power systems.
Altitudes > 2000m
For installations above 2000 meters, thin air reduces dielectric properties and cooling efficiency. We calculate and provide clear de-rating tables to adjust operational voltages and currents.
Residential Safety
Our compact MCCB models provide overload and short-circuit protection for building service panels and large household appliances, offering reliable safety in standard installations.
55°C Calibration
We construct housings using heat-resistant plastics and apply protective coatings to copper busbars, verifying thermal performance through testing in our 55°C environmental chambers.
Smart Grid IoT
Equipped with communication interfaces, current transformers, and voltage monitoring boards. Supports remote sensing, control, and billing for smart distribution networks.
Sourcing 50 Ampere MCCBs from China offers significant structural and supply chain advantages. The Wenzhou electrical cluster provides concentrated access to raw materials, sub-assembly manufacturing, and testing facilities, ensuring cost efficiency and high manufacturing quality.
Direct access to high-purity copper, silver-alloy contacts, and flame-retardant plastics helps control material costs while maintaining technical performance.
In-house mold design and maintenance teams allow us to quickly implement updates and adjust physical designs based on customer requirements.
Our testing lab conducts short-circuit simulation, mechanical cycle, and environmental testing, ensuring products meet international specifications.
B2B buyers, switchboard builders, and utility agencies require suppliers to provide comprehensive technical data and certificates. Acereare Electric meets these requirements through detailed specifications, 3D CAD drawings, compliance documentation, and sample testing.
Our dual factories manage both high-volume standard orders and specialized customizations, allowing us to maintain competitive lead times. Utilizing ERP and MES software, we track production status and provide transparency from order processing to final delivery.
We provide custom branding, structural modification, and electrical configuration options for our distribution partners.
Our structured process ensures transparent communication and consistent product quality from initial consultation to delivery.
We review your electrical load, environmental requirements, and certificate needs to recommend the right solution.
Our engineering team designs and simulates custom features, providing CAD layout drawings for your review.
We finalize product specifications, packaging requirements, production lead times, and terms in a sales agreement.
Production is scheduled in our automated assembly lines, with quality inspections at key steps.
Products undergo final testing, packaging, and logistical processing to ship to your warehouse.
Acereare products are manufactured in ISO-compliant facilities and certified to international electrical standards.
Explore additional circuit breakers, adjustable trip mechanisms, and specialized parts for custom panel assemblies.
Our automated manufacturing plants utilize high-precision stamping machinery, automated contact welding systems, and digital calibration equipment. Watch this video overview of our production facility, showcasing the manufacturing steps and quality control procedures applied to our MCCB and ACB product lines.
Work with an experienced Chinese manufacturer to customize your circuit protection systems. We support brand development, specialized adjustments, and custom packaging designs.
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