High-breaking capacity, modular, and temperature-stabilized protection solutions engineered in our Yueqing manufacturing cluster.
Industrial operations across the Russian Federation—from heavy manufacturing hubs in the Urals to oil extraction sites in West Siberia—demand electrical components engineered for mechanical resilience and harsh ambient conditions.
Standard MCCBs experience plastic embrittlement and calibration drift below -20°C. OFA’s cold-climate execution utilizes reinforced BMC/DMC housing and low-viscosity synthetic contact lubricants capable of flawless operation down to -60°C (HL Climate Category according to GOST 15150-69).
Heavy mining equipment, pumps, and transformers introduce massive inductive inrush currents and transient faults. Our MCCBs offer ultimate breaking capacities ($I_{cu}$) up to 100kA at 400V/690V, ensuring immediate fault clearance without housing rupture or contact welding.
Smooth customs clearance and industrial site installation in Russia require strict adherence to TR CU 004/2011 (Low Voltage Safety) and TR CU 020/2011 (EMC). OFA products are manufactured under ISO9001 systems aligned with GOST IEC 60947-2 testing protocol.
Detailed technical breakdown of thermal-magnetic trip units, electronic microprocessors, and arc-quenching design optimized for Russian industrial switchgear integrators.
When a short circuit occurs in a high-voltage industrial grid, the contact separator creates an electric arc reaching temperatures above 6,000°K. OFA Molded Case Circuit Breakers incorporate multi-plate steel arc chutes with de-ion plates to rapidly split and cool the arc.
OFA provides dual-technology trip systems to accommodate both cost-effective general distribution and intelligent automated power grids across Russia.
| Frame Rating (A) | Model Series | Rated Current $I_n$ (A) | Poles (P) | Rated Voltage $U_e$ (V) | Breaking Capacity $I_{cu}$ (kA) | Trip Unit Types |
|---|---|---|---|---|---|---|
| 125A Frame | DCM1-125 / BA88-125 | 16, 25, 32, 40, 50, 63, 80, 100, 125 | 3P, 4P | AC 400V / 690V | 35kA / 50kA | Thermal-Magnetic Fixed |
| 250A Frame | DCM1-250L / BA88-250E | 125, 160, 200, 225, 250 | 3P, 4P | AC 400V / 690V | 50kA / 65kA | Thermal-Magnetic Adjustable |
| 400A / 630A Frame | OFA-M1 / DCOF1-630 | 315, 350, 400, 500, 630 | 3P, 4P | AC 400V / 690V | 65kA / 85kA | Microprocessor ETU / LSI |
| 800A - 1600A Frame | OFM1 Heavy Series | 800, 1000, 1250, 1600 | 3P, 4P | AC 400V / 690V | 85kA / 100kA | Intelligent Electronic + Modbus |
Located in Yueqing, Wenzhou—the Capital of Electrical Appliances in China—Wenzhou OFA Electrical Technology Co., Ltd. delivers direct factory pricing, agile customization, and localized documentation support.
Our integrated assembly facilities and automated calibration lines enable mass production without sacrificing precision. We provide Russian importers with up to 25-35% cost savings compared to European legacy brands, paired with identical mounting dimensions for direct retrofit replacement.
We provide full Russian language laser etching, GOST-compliant technical data plates, customized outer box packaging, and localized user manuals. Whether you require custom brand printing or specialized auxiliary contact configurations (shunt trip, under-voltage release), OFA delivers fast samples within 7-10 days.
Leveraging direct Sino-Russian railway corridors (e.g., Manzhouli/Zabaykalsk and Yiwu-Moscow routes), we offer predictable lead times and complete export documentation support (Certificate of Origin, Packing List, Commercial Invoice, Customs Declaration) ensuring fast delivery to Moscow, Ekaterinburg, Novosibirsk, or Vladivostok.
Engineered for extreme reliability across residential distribution, heavy mining processing plants, commercial infrastructure, and renewable microgrids.
In harsh extraction operations around Norilsk and Kuzbass, heavy dust, constant mechanical vibration, and extreme low temperatures shatter ordinary circuit breakers. OFA MCCBs feature glass-fiber reinforced housings and vibration-damped mechanical latches to ensure zero accidental nuisance trips.
Remote pipeline pumping infrastructure managed by energy giants requires autonomous, maintenance-free operation. Our microprocessor ETU MCCBs provide continuous current monitoring and remote diagnostic telemetry, reporting grid health via RS485 back-end connections.
With expanding utility-scale renewable energy installations across Southern Russia, OFA supplies specialized DC Molded Case Circuit Breakers rated up to DC 1500V. Designed specifically to extinguish high-voltage DC arcs without polarity dependence.
High-density urban transformer substations in Moscow and Saint Petersburg demand selective protection coordination to prevent cascading blackout events. OFA MCCBs offer fine-tuned short-time delay adjustments ($I^2t$ ON/OFF) for perfect discrimination.
Driving the continuous progress of power distribution and control technology through independent R&D, strict quality control, and customer-first engineering support.
Founded in 2013, Wenzhou OFA Electrical Technology Co., Ltd. is rooted in Yueqing, Wenzhou—the heart of China's low-voltage electrical industry. Holding independent brands such as "OFA", our products cover multiple sectors including power distribution, renewable energy, industrial automation, construction, and panel manufacturing.
We adhere to honest, compliant operations and have been rated as Tax Credit Grade A for seven consecutive years. With over a decade of continuous manufacturing refinement, our factory has passed ISO9001 quality management system certification and operates 100% full-inspection standard operating procedures (SOPs).
See why global engineering partners and Russian distributors rely on OFA for stable, long-term power system protection.
"As an electrical panel builder supplying industrial clients in Eastern Europe, we needed MCCBs that hold up during winter temperature collapses. OFA's BA88 and DCM1 series breakers operate flawlessly with zero nuisance tripping. Their customized labeling service made EAC registration fast and seamless."
"We upgraded our manufacturing workshop's main distribution panels using OFA's electronic trip MCCBs. The installation was straightforward, matching standardized DIN/frame dimensions, and their technical support team assisted with setting our selectivity parameters."
"In our solar power plant project, reliable circuit protection at a competitive cost was critical. OFA provided high-voltage DC MCCBs with rapid lead times. Their direct factory communication gave us complete confidence during procurement."
Everything you need to know about ordering, EAC compliance, cold-climate testing, and factory OEM capabilities.
Explore our broader lineup of Molded Case Circuit Breakers, Residual Current Breakers, and High-Amperage MCBs.
Looking for reliable low-voltage switchgear components engineered for cold climates, certified safety, and direct factory pricing? Request a formal quotation or technical whitepaper today.
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