Direct access to our certified OEM/ODM miniature, molded case, and smart circuit breaker series.
How IoT Integration, Edge Computing, and Precision Telemetry Redefine Circuit Safety and Energy Efficiency.
Equipped with 2.4GHz Wi-Fi (802.11 b/g/n), Tuya/Smart Life integration, and Modbus RS485 protocols, Wi-Fi breakers allow real-time monitoring of current, voltage, temperature, and leakage current from anywhere across the globe.
Embedded high-accuracy energy metering chipsets (Class 1.0 accuracy) track active energy consumption (kWh), power factor, reactive power, and instantaneous load to support automated carbon footprint reporting.
Offers configurable software trip thresholds alongside hardware-level thermal-magnetic trip units. Provides active pre-warning alerts for over-temperature, over-voltage, and insulation breakdown prior to physical trip events.
Combining physical short-circuit arc quenching with microcontroller-driven relay activation.
| Parameter / Feature | Conventional MCB (e.g., Standard 6kA/10kA) | OFA Smart Wi-Fi Circuit Breaker (OEM Series) | Industrial SCADA Integrated Breaker |
|---|---|---|---|
| Communication Protocol | None (Purely Mechanical) | Wi-Fi 2.4GHz / Tuya / Zigbee / Matter / RS485 | Modbus RTU / Ethernet IP / Profibus |
| Energy Metering | External Meter Required | Integrated Class 1.0 (kWh, V, A, W, PF, Hz) | Integrated Multi-tariff Class 0.5S |
| Remote Control Actuation | Not Available (Manual Shunt Trip optional) | Internal Motorized Servo Mechanism (10,000+ operations) | Motorized Operatng Mechanism (Heavy Duty) |
| Protection Capabilities | Overload (Thermal), Short-Circuit (Magnetic) | Thermal-Magnetic + Over/Under-Voltage + Leakage + Over-Temp | Comprehensive Electronic Microprocessor Protection |
| Breaking Capacity (Icu) | 4.5kA - 10kA (IEC 60898-1) | 6kA - 10kA (IEC 60898-1 / IEC 60947-2) | 10kA - 50kA (IEC 60947-2) |
| Firmware Upgradeability | N/A | OTA (Over-The-Air) Remote Cloud Updates | Local RS485 / Dedicated Programmer |
The mechanical core relies on silver-alloy contacts (AgCdO/AgSnO2) with high erosion resistance, paired with a 12-plate arc chute system. During a short-circuit fault up to 10kA, the magnetic trip element operates within 3 milliseconds, forcing the electrical arc into the chute to be split, cooled, and extinguished safely without degrading the electronic control board.
The control module incorporates a wide-input buck power supply (85V-265V AC) with high-level EMC/ESD immunity to prevent false resets during line noise. A 32-bit ARM Cortex M4 or ESP32-based processor reads analog voltage and current inputs continuously via precision current transformers (CTs) and voltage dividers.
Understanding the world's most concentrated low-voltage electrical manufacturing cluster.
Founded in 2013, Wenzhou OFA Electrical Technology Co., Ltd. operates state-of-the-art automated assembly lines paired with strict 100% full-inspection SOPs.
Our Yueqing factory houses full-process type testing labs to verify mechanical endurance, temperature rise, dielectric withstand voltage, and Wi-Fi RF wireless transmission stability under heavy thermal stress.
Deploying smart Wi-Fi switchgear across smart cities, telecom, renewable energy, and enterprise infrastructure.
Integration into residential sub-distribution boards allows homeowners to manage high-power appliances remotely, execute automated off-peak charging schedules, and prevent household fires caused by neutral line loosening or circuit overloading.
Facilitates tenant energy billing and HVAC load shedding in multi-story office buildings. System operators receive cloud alerts for phase imbalance, elevated copper busbar temperatures, or ground fault currents.
Remote cell towers located in inaccessible geography benefit from automated remote power-cycling capabilities. In solar PV and battery storage microgrids, smart breakers isolate fault branches without total system shutdowns.
Protects electric vehicle supply equipment (EVSE) against DC residual currents (6mA DC protection) and over-temperature conditions. Communicates station status back to central billing cloud platforms.
Provides selective tripping and real-time load profiling for server racks and robotic manufacturing cells, avoiding costly unprogrammed downtime in high-availability environments.
Enables automated schedule-based control and energy sub-metering for street light networks, municipal water pumps, and public safety cameras without requiring field service technicians.
Full-spectrum customization services for global electrical brands, wholesalers, and solution integrators.
Wenzhou OFA Electrical Technology Co., Ltd. assigns dedicated R&D engineers, project managers, and quality assurance specialists to every OEM client account. From initial initial concept drawings to tool modification, type testing, mass production runs, and container loading—we maintain a transparent delivery schedule with weekly status reports.
Browse our broad spectrum of high-performance electrical components for power distribution and circuit control.
Designed for commercial and industrial main switchboards. Protects against heavy overloads, short-circuits, and phase failures up to 1250A.
Compact protective devices for sub-circuits in residential panels, commercial distribution boards, and machine control boxes.
Combines overcurrent protection with high-sensitivity earth leakage current protection to safeguard personnel against lethal electrical shocks.
Intelligent high-capacity power circuit breakers designed for low-voltage power distribution transformer outputs up to 6300A.
Compact load-break isolator switches providing safe physical electrical isolation during system service and maintenance routines.
Specialized high-voltage direct current (DC) breakers engineered for photovoltaic arrays, battery energy storage (BESS), and DC microgrids.
Detailed answers to fundamental questions asked by global importers, EPC contractors, and OEM buyers.
Direct procurement links for our high-demand OEM/ODM miniature and specialty breaker lines.
Whether you need standard MCB shipments, custom Wi-Fi circuit breaker firmware development, or a complete private label product line—Wenzhou OFA Electrical Technology Co., Ltd. delivers world-class precision, speed, and competitive factory pricing.
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