Engineered for maximum reliability, compliance with EN/IEC 61008-1 standards, and seamless integration into Serbian electrical grids.
Analyzing the macro-economic transformation of Serbia and the stringent electrical protection demands of Balkan infrastructure projects.
Serbia has rapidly established itself as the primary industrial engine and re-industrialization hub of the Western Balkans. Supported by key strategic investments in automotive engineering (such as the Kragujevac mobility cluster), heavy industrial extraction in Bor and Majdanpek, data center developments in Kragujevac, and expansive smart urban redevelopment projects like the Belgrade Waterfront, the country is witnessing an unprecedented surge in modern electrical infrastructure installation. As Serbia aligns its national technical regulations (SRPS standards) with the European Union directives (CE, IEC, and EN certifications), the benchmark for low-voltage power distribution equipment has shifted from basic functionality to high-tier reliability, energy efficiency, and total life-cycle safety.
Architectural superiority, material science innovations, and core mechanisms inside Wenzhou OFA's flagship RCCB series.
Features transient-resistant tripping mechanisms optimized for severe grid fluctuations, protecting sensitive automation equipment against unwanted power interruptions.
Enclosures constructed from high-grade thermo-hardened, self-extinguishing polyamides capable of enduring glow-wire tests up to 960°C per IEC 60695-2-10.
Engineered with AgCdO/AgZnO composite contacts providing exceptional electrical conductivity, minimal contact resistance, and immunity to contact welding under fault currents.
Precision-milled internal mechanical linkages rated for over 10,000 operational cycles under full load, exceeding typical standard industrial benchmarks.
Ultra-accurate Zero-Sequence Current Transformers capable of detecting residual leakage currents as low as 10mA, 30mA, 100mA, and 300mA instantly.
Standardized 35mm DIN-rail mounting with bi-stable locking clips, enabling fast, tool-free installation inside industrial switchboards and consumer units.
Driving the continuous progress of power distribution and control technology from the Capital of Electrical Appliances in China.
Founded in 2013, Wenzhou OFA Electrical Technology Co., Ltd. is rooted in Yueqing, Wenzhou—the world-renowned capital of electrical appliances. Over a decade of steadfast dedication to technological research, lean manufacturing, and customer-centric service has made OFA a trusted partner for switchgear distributors, system integrators, EPC contractors, and panel builders across more than 50 countries worldwide.
Our company operates an advanced manufacturing campus equipped with automated assembly lines, digital inspection stations, and a complete full-process type testing laboratory. From incoming raw material testing to automated calibration of thermal-magnetic trip units, every single product manufactured by OFA undergoes a rigorous 100% full-inspection standard operating procedure (SOP). Rated as tax credit grade A for seven consecutive years, OFA builds long-term client trust through transparent business practices, uncompromising quality control, and scalable production capability.
Customized power distribution configurations tailored for Serbia's specific key sector applications.
High-vibration resistant OFPM 4P RCCBs coupled with OFM1 Molded Case Circuit Breakers (MCCB) protect automated robotic assembly lines and CNC machines against earth faults and short-circuit disruptions, preventing costly production line downtime.
Compact OFNC and OFDZ47 Miniature Circuit Breakers combined with OFPM 2P RCCBs deliver multi-level fire protection and personal shock prevention within high-density commercial towers and residential complexes, ensuring compliance with SRPS standards.
Specialized OFC and OFOM Series RCBOs integrated into solar inverter AC distribution panels handle non-sinusoidal residual currents effectively, safeguarding solar microgrids against environmental insulation degradation and ground leakage hazards.
Explore our multi-category product ecosystem designed for residential, commercial, and heavy-duty industrial switchboards.
Navigating the convergence of smart grid technology, IoT monitoring, and next-generation safety standards.
As power systems transition towards decentralized energy production, digitized sub-metering, and smart building management systems (BMS), OFA is actively pushing the boundaries of protective device technology. Our technical roadmap focuses on three core pillars of innovation:
Future iterations of the OFPM Series are integrating wireless RS485/Modbus and LoRaWAN communication interfaces directly into compact DIN-rail modules. This permits real-time telemetry of continuous residual current levels, phase voltages, contact temperature, and trip events to cloud platforms like the OFA Energy Management Platform. Maintenance teams in Serbian facilities can move from reactive troubleshooting to predictive maintenance, identifying cable insulation breakdown before a trip occurs.
With the exponential growth of electric vehicles across Eastern Europe, charging infrastructure requires RCCBs capable of detecting high-frequency AC leakage and smooth DC residual currents up to 100kHz. OFA's next-gen OFPM-B Series incorporates micro-fluxgate sensor technology to guarantee complete protection for Mode 3 and Mode 4 EV charging stations.
In response to global sustainability goals and EU Green Deal guidelines, OFA is adopting halogen-free, fully recyclable thermoplastics across the OFPM housing production line. This minimizes environmental impact at end-of-life while ensuring superior heat dissipation and arc-extinction performance.
Discover why panel builders, EPC contractors, and system integrators trust OFA for critical power projects.
"As a system integrator in Poland, we collaborated with OFA on multiple industrial automation installations. Their product range—from protective relays to RCCBs—simplifies our procurement tremendously. The quality consistency minimizes on-site commissioning delays."
"We deployed OFA intelligent power monitoring devices and OFPM circuit breakers to retrofit our workshop. Installation was effortless, and the units have operated flawlessly for over a year. Their technical documentation is exceptionally thorough."
"Deploying OFA's energy management products across our commercial building portfolio in Bangkok was a strategic win. We gained absolute visibility over power consumption and reduced operational risk. OFA's remote technical support is fast and effective."
Essential guidance for Serbian distributors, project engineers, and procurement managers.
Yes. All OFPM Series Residual Current Operated Circuit Breakers strictly conform to international IEC/EN 61008-1 standards, which serve as the exact technical foundation for Serbia's national SRPS EN 61008-1 standards. Test reports and CE documentation are readily available upon request.
The OFPM 2P (Two-Pole) model is designed for single-phase 230V AC circuits commonly used in residential consumer units and small office sub-panels. The OFPM 4P (Four-Pole) model is constructed for three-phase 400V AC distribution networks prevalent in commercial buildings, industrial facilities, and heavy motor control centers.
OFA maintains long-standing partnerships with tier-1 international freight forwarders offering ocean container shipping to the Port of Bar (Montenegro) or Port of Rijeka (Croatia) with direct transit to Belgrade/Novi Sad customs depots, as well as air freight solutions for urgent project requirements. We furnish full export documentation including EUR.1 Certificate of Origin support if required.
Absolutley. We offer comprehensive OEM/ODM services including laser engraving of distributor branding on the product fascia, customized outer carton printing, special tripping sensitivity calibration, and multi-lingual instruction inserts in Serbian/English.
We provide a standard 18-month warranty from shipment date or 12-month warranty from installation date across all OFPM Series products. Our engineering support team delivers technical consultation, wiring circuit verification, and troubleshooting via online ticketing and video conferencing.
Explore our comprehensive lineup of MCBs, RCCBs, RCBOs, and Molded Case Breakers engineered for demanding operating conditions.
OFA Electrical