OFA Electrical
What is an RCBO? Why is it Safer Than an "MCB + RCD" Setup?
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Professional manufacturer of distribution switchgear & control equipment. Trusted by 780+ global partners across power, energy, industrial automation & construction sectors.
Wenzhou OFA Electrical Technology Co., Ltd. is one of the professional suppliers of distribution switchgear and control equipment in China. Founded in 2013, the company is rooted in Yueqing, Wenzhou — the Capital of Electrical Appliances in China. It owns independent brands such as "OFA", and its products cover multiple industries and applications including power, energy, industrial automation, construction and equipment manufacturing.
Rooted in Yueqing for over a decade, OFA has been providing partners with distribution switchgear and control equipment and supporting products that feature stable performance and cost advantages. We adhere to honest and law-abiding operations, have been rated as tax credit grade A for seven consecutive years, and have earned the long-term trust of numerous clients.
We are committed to enabling power systems to operate safer and smarter through products and services that integrate industry best practices, independent R&D and strict quality control. Driving the continuous progress of power distribution and control technology!
We deliver four core advantages that set us apart in the electrical manufacturing industry.
Our technical team continues to delve deep into the R&D and improvement of distribution switchgear and control equipment, equipped with full-process type testing and factory inspection devices, enabling rigorous verification of mechanical life, temperature rise and insulation performance.
Through flexible production combining standardization and customization, we precisely match customers' specification requirements and provide highly cost-effective configurations, with responsive service networks offering long-term lifecycle support.
We have introduced automated assembly lines and digital inspection stations, ensuring every step from parts to finished products is under strict in-process control, steadily outputting high-quality products at reasonable cost and minimizing the out-of-factory defect rate.
Our products meet international market access standards including CE and IEC certifications. We have served numerous overseas partners across 50+ countries, with strong logistics capabilities for fast global delivery and secure packaging.
Our products adhere to rigorous 100% full-inspection standard SOPs, ensuring every product meets international certification standards such as CE and IEC.
MCCB primary function is to make, carry, and break currents under normal circuit conditions, and to make, carry for a specified time, and break currents under specified abnormal conditions such as overload and short circuit.
At the end of modern low-voltage power distribution systems, the safety and stability of every circuit rely on a reliable and sophisticated guardian — the Miniature Circuit Breaker (MCB).
Our Intelligent Air Circuit Breaker (ACB) product line is precisely designed as a high-performance core protection and control device, engineered for demanding industrial and commercial power distribution environments.
Our RCCB product line is a specialized, high-reliability protection solution designed precisely for residual current detection, providing graded protection for personnel and equipment safety.
RCBO innovatively integrates three core functions — overload protection, short-circuit protection, and high-sensitivity earth leakage protection — into a single compact unit for full-scenario protection.
The IS Series innovatively integrates the complete protective functions of a MCB or MCCB with the Isolator into a single, compact unit — Intelligence, Integration & Reliability through Technological Convergence.
From MCCB to IS Series — browse our comprehensive product lines designed for every power distribution scenario.
We Are a Reliable Electrical Equipment Supplier You Can Trust — Built on over a decade of solid manufacturing expertise.
Founded in 2013 and based in Yueqing, Wenzhou — the heart of China's electrical industry and its largest low-voltage cluster. Wenzhou OFA Electrical Technology Co., Ltd. specializes in R&D, manufacturing, and sales of distribution switchgear control equipment and accessories. Upholding 'Professionalism, Integrity, Innovation,' we deliver high-quality components and solutions for power, energy, and industrial automation.
Based on over a decade of industry accumulation and thousands of successful deliveries, the customer retention rate has consistently remained at a high level. Our customer base covers power, construction, energy, industrial support and many other fields. Many customers have established long-term partnerships with us since the first cooperation and continue to make repeat purchases.
Cost-Effective and Green Manufacturing — Creating value for customers through continuously optimized products and services.
We select and match the most suitable product solutions based on your field conditions and technical specifications, ensuring precise fit for every project requirement.
Through end-to-end standardized processes and multiple quality checkpoints, we ensure every product performs with consistent reliability, minimizing out-of-factory defect rates.
We deliver responsive, all-phase assistance covering delivery tracking, on-site coordination, and technical consultation — from pre-sale to post-operation maintenance.
OFA has been able to develop steadily because we insist on doing electrical manufacturing in a pragmatic, environmentally responsible way — no empty talk about concepts, only focus on making existing products better and turning new demands into reliable new solutions.
We have an experienced technical team that can develop new products according to customers' specific requirements. We also provide OEM/ODM services to help you reduce procurement costs and shorten time-to-market.
Our electrical equipment is designed for diverse operational environments — from simple circuit protection to complex system integration. Applied across public infrastructure, commercial facilities, industrial plants, and residential systems.
Reliable MCB and RCBO solutions for residential electrical safety and smart home integration.
MCCB and ACB systems for office buildings, retail centers and commercial facilities power management.
Industrial automation control equipment for manufacturing plants, process control and motor protection.
DC MCCB and specialized protection devices for PV systems, solar farms and renewable energy distribution.
High-reliability circuit protection and intelligent monitoring for mission-critical data center power infrastructure.
Specialized RCCB and protection devices for electric vehicle charging infrastructure and battery storage systems.
Protection and control equipment for battery energy storage systems, microgrids and energy management applications.
Distribution switchgear solutions for public utilities, transportation systems and large-scale infrastructure projects.
Intelligent miniature circuit breakers and integrated switches for smart home electrical management and automation.
OFA has a global presence, with sales and service coverage in over 50 countries worldwide. Our products meet international market access standards and have served numerous overseas partners across Belt & Road and BRICS nations. We are certified to IEC, GB, and CCC standards, ensuring compliance for diverse international markets.
Customers are willing to choose us repeatedly because they value our attention to detail and the fact that they can get products with reliable performance at competitive prices. We have a delivery record of doing what we say, on time and within budget. Quality is our non-negotiable bottom line.
Sea freight, air freight, or courier services with all necessary export documents.
Custom development to reduce procurement costs and shorten time-to-market.
Comprehensive routine inspections and sampling tests on every batch before delivery.
International payment methods including T/T with flexible MOQ policies.
Wenzhou OFA Electric Technology Co., Ltd. is a trusted partner in power automation solutions. We focus on integrating proprietary technologies into real-world applications, delivering reliable and efficient energy management systems.
We are a solutions partner focused on helping clients optimize their power and energy efficiency. Rather than simply supplying products, we provide systematic expertise — delivering reliable, integrated solutions tailored to the specific challenges of your site.
Our strength lies in combining hardware, software, and application know-how. We help clients build and upgrade their power management architecture, with an emphasis on long-term reliability, efficiency, and smart operation — not just initial equipment supply.
We provide integrated power and energy management solutions, covering the entire process from system planning and hardware-software development to on-site deployment. Our team supports project implementation with an engineering-oriented approach, balancing solution completeness, delivery quality, and long-term maintainability.
Every project has unique demands. We don't just supply components — we analyze your specific electrical challenges, engineer tailored solutions, and ensure seamless integration.
Visit our "Solutions" section to review standardized energy management solutions and application cases. You may also submit your site's basic data directly, and we will promptly match it with a mature solution framework validated through extensive practice.
Based on the initial framework, OFA engineers will provide a detailed system configuration list and topology diagram. Utilizing our self-developed energy efficiency simulation platform, we can perform energy usage data analysis and energy-saving benefit simulations, making the project's value visible.
Upon solution confirmation, we will generate transparent product and service quotations. OFA's flexible production system and standardized quality control ensure rapid delivery of mature products. Core components are often kept in stock, effectively shortening delivery lead times.
We provide clear installation/commissioning guidelines and online technical support. After project deployment, both parties can conduct acceptance based on predefined technical indicators to ensure the system operates stably.
OFA will form a technical team comprising sales, solution, and R&D engineers for in-depth online or on-site discussions. We focus on analyzing your existing system's operational data, bottleneck issues, and long-term planning to jointly define the project's top-level objectives and technical boundaries.
Based on the assessment findings, we provide a preliminary customized design solution covering "smart hardware + software platform + system integration." Through multiple technical review meetings, both parties will confirm the system architecture, communication protocols, functional details, and implementation milestones.
For projects involving non-standard interfaces or special functions, OFA's R&D team can provide joint development support. Key subsystems will undergo pre-connection and functional testing with the client's system in OFA's laboratory or via remote interconnection before shipment.
During equipment delivery and on-site installation, OFA assigns experienced project managers and technical support engineers to cooperate throughout the process, addressing technical issues arising during equipment installation, network configuration, software deployment, and joint commissioning.
After the system is officially operational, we provide full operational documentation, operator training, and after-sales service support. Based on long-term data monitoring from the OFA Energy Management Platform, we can regularly provide operational reports and energy efficiency optimization suggestions.
Here is how we turn complex requirements into reliable power systems. Learn in detail how we help our clients succeed!
Wenzhou OFA Electric Technology Co., Ltd., a leading domestic provider of power automation and energy efficiency solutions, is driven by technological innovation. By integrating industry practices with customer needs, we deliver tailored intelligent electrical systems and services.
Leveraging our self-developed hardware/software platforms and engineering capabilities, we offer integrated services from solution consulting and system design to product customization and operational support.
Developing a new generation of safe electrical products to improve people's quality of life. OFA actively participates in leading global electrical industry exhibitions.
See why global industry leaders rely on OFA for their electrical systems
Have questions about our electrical products or solutions? Explore our FAQs for quick, reliable answers.
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