Iraq's industrial infrastructure is currently undergoing one of the most substantial modernizations in the Middle East. Driven by the expansion of petrochemical refineries in Basra, commercial grid upgrades in Baghdad, strategic deep-water facilities at the Al-Faw Grand Port, and massive industrial expansion across Erbil and Kurdistan Region, the demand for robust low-voltage power distribution systems has surged unprecedentedly. At the heart of these critical distribution networks sits the Air Circuit Breaker (ACB)—the main switchgear shield responsible for protecting multi-megawatt transformers, heavy industrial motors, and generator sets from destructive short-circuits, overloads, and earth faults.
Technical Information Gain Notice: Unlike standard switchgear, Air Circuit Breakers deployed in the Iraqi region must confront extraordinary environmental and electrical stressors: ambient summer temperatures exceeding 55°C (requiring rigorous thermal derating calculations), extreme airborne particulate density (sandstorms), and unstable grid voltage profiles characterized by frequent switching between the National Grid and local high-capacity diesel generators.
As a leading ACB Factory & Manufacturer serving Iraq, Wenzhou OFA Electrical Technology Co., Ltd. delivers the flagship OFW1 Series Intelligent Universal Circuit Breaker. Designed under strict IEC/EN 60947-2 standards, our ACBs integrate microprocessor-based intelligent controller units, precision electro-dynamic arc extinguishing systems, and silver-alloy contacts capable of handling ultimate short-circuit breaking capacities ($I_{cu}$) up to 120kA at 415V AC.
Oilfields such as Rumaila, West Qurna, and Majnoon operate 24/7 in severe corrosive atmospheres laden with sulfur compounds and intense desert heat. OFA's OFW1 ACBs feature tropicalized insulation treatment, anti-corrosion plated copper busbars, and zone-selective interlocking (ZSI) to prevent catastrophic downtime in refinery Main Distribution Boards (MDBs).
Hospitals, commercial complexes, and data centers in Baghdad require unconditional power reliability. Our draw-out type ACBs with automatic transfer switch (ATS) control modules enable seamless mechanical and electrical interlock transfer between the main grid and standby generator sets during unexpected grid blackouts.
As Iraq rapidly adopts utility-scale photovoltaic solar energy under Ministry of Electricity initiatives, OFA ACBs provide high-voltage AC protection (up to 690V AC / 1140V option) capable of breaking heavy capacitive currents and isolating solar inverter step-up transformers efficiently.
Operating an Air Circuit Breaker in Iraq's ambient environment requires precise calibration. Standard circuit breaker ratings certified at 40°C IEC ambient benchmarks undergo significant thermal derating when installed inside non-air-conditioned IP54 metal enclosure switchboards under direct sunlight in Southern Iraq.
| Parameter / Frame Size | OFW1-2000 Frame | OFW1-3200 Frame | OFW1-4000 Frame | OFW1-6300 Frame |
|---|---|---|---|---|
| Rated Current Range ($I_n$) | 630A - 2000A | 2000A - 3200A | 3200A - 4000A | 4000A - 6300A |
| Ultimate Breaking Capacity ($I_{cu}$) @ 415V | 85 kA | 100 kA | 100 kA | 120 kA |
| Service Breaking Capacity ($I_{cs}$) | 100% $I_{cu}$ | 100% $I_{cu}$ | 100% $I_{cu}$ | 100% $I_{cu}$ |
| Short-time Withstand Current ($I_{cw}$) - 1s | 50 kA | 65 kA | 85 kA | 100 kA |
| Thermal Derating Factor (at 50°C Ambient) | 0.92 x $I_n$ | 0.90 x $I_n$ | 0.88 x $I_n$ | 0.85 x $I_n$ |
| Thermal Derating Factor (at 60°C Enclosure Temp) | 0.85 x $I_n$ | 0.82 x $I_n$ | 0.80 x $I_n$ | 0.78 x $I_n$ |
| Communication Protocols | MODBUS-RTU / RS485, Profibus-DP, Ethernet IP (Smart Grid Ready) | |||
Modern low-voltage protection is transitioning rapidly from traditional passive tripping to AI-driven predictive health diagnostics. OFA's next-generation electronic trip units continuously monitor contact resistance, temperature rise at copper busbar terminals, and mechanical spring charging cycles, signaling maintenance alerts over SCADA before electrical faults occur.
In compliance with global ESG initiatives, OFA circuit breakers utilize zero-SF6 recyclable thermo-plastics, halogen-free internal components, and optimized silver-tin-oxide ($AgSnO_2$) contact tips that significantly reduce toxic arc gas emissions while increasing mechanical operating endurance up to 20,000 cycles.
Founded in 2013 and rooted in Yueqing, Wenzhou—the largest low-voltage electrical appliance manufacturing hub in China—Wenzhou OFA Electrical Technology Co., Ltd. has established itself as an authoritative supplier of power distribution switchgear and control equipment.
With over a decade of continuous technical innovation, our factory operates fully automated assembly lines, digital high-current impulse testing stations, and rigorous full-process type testing devices. Rated as a Tax Credit Grade A Enterprise for seven consecutive years, we serve electrical contractors, panel builders, and OEM partners across 50+ countries worldwide.
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