High-sensitivity leakage protection and heavy-duty direct current breaking technology engineered for local climate resilience.
The Philippines is undergoing an aggressive industrial expansion, driven by massive infrastructure developments, commercial real estate projects in Metro Manila and Cebu, alongside nationwide investments in renewable energy. However, operating low-voltage electrical distribution networks in the archipelago presents distinct operational hurdles:
Wenzhou OFA Electrical Technology Co., Ltd. supplies the OFID Series specifically engineered to exceed these localized electrical and climatic challenges, guaranteeing long-term system availability and absolute personnel safety.
Understanding the internal magnetic, thermal, and electronic mechanisms that deliver zero-defect earth leakage protection.
Utilizes ultra-high magnetic permeability nano-crystalline toroidal cores within the Zero-Sequence Current Transformer (ZSCT). This ensures precise vector sum measurement of AC/DC residual leakage currents as low as 30mA, tripping within <40 milliseconds to preserve human life.
Integrated arc-extinguishing chambers with multi-grid splitter plates effectively elongate and dissipate high-energy DC arcs occurring up to 1000V DC. Specially formulated silver-alloy contact metallurgy eliminates contact welding under heavy fault clearing conditions.
Housing molded from high-impact, fire-resistant polycarbonate material rated UL94-V0. Internal metal components undergo anti-corrosion electroplating to resist high moisture, salt fog, and ambient heat up to 70°C without mechanical binding.
Designed for solar installations across Central Luzon and Visayas. OFID 4P DC Residual Breakers protect string inverters, combiner boxes, and energy storage enclosures against smooth DC earth faults and insulation breakdown caused by tropical rains.
Datacenters in Makati and BGC demand uninterrupted quality power. The OFID Series provides immunity against transient nuisance tripping induced by switching surges and UPS harmonic frequencies while isolating genuine residual current faults instantly.
Industrial operations in CALABARZON (Laguna, Batangas, Cavite) utilize OFA MCCB and OFID RCCB units to protect continuous production lines, motor control centers (MCC), and automated packing equipment from overload, short circuits, and equipment ground faults.
Founded in 2013 and headquartered in Yueqing, Wenzhou — the renowned Capital of Electrical Appliances in China — Wenzhou OFA Electrical Technology Co., Ltd. specializes in the independent R&D, advanced lean manufacturing, and global distribution of low-voltage distribution switchgear, control equipment, and protective circuit breakers.
Holding independent brand marks such as "OFA", our products serve critical power infrastructure, renewable energy systems, industrial automation, and commercial projects across over 50 countries. Upholding an uncompromised standard of operational honesty, OFA has been awarded Tax Credit Grade A status for seven consecutive years.
Complete component ecosystem matching demanding Philippine utility and project engineering specifications.
Heavy-duty protective devices rated up to 800A with adjustable electronic or thermal-magnetic trip units for main distribution panels.
High-breaking capacity DIN-rail mounted protection components (6kA/10kA) for commercial sub-panels and residential consumer units.
Intelligent main breakers designed for high-capacity industrial power plants, commercial complexes, and data center main switchboards.
Dedicated earth leakage protection devices operating under Type A, AC, and B requirements for complete personnel safety.
All-in-one compact unit combining overload, short-circuit, and high-sensitivity residual leakage protection in single DIN modules.
Robust load break isolator switches ensuring safe isolation during maintenance in commercial and industrial sub-distribution panels.
Select certified products engineered for rapid deployment across Philippine procurement channels.
Streamlined technical review, sample prototyping, and bulk shipping for Philippine EPCs & panel builders.
Ideal for distributors, panel builders, and contractors needing standardized CE/IEC certified breakers with rapid turnaround:
Designed for global equipment OEMs, brand owners, and utility-scale renewable developers seeking custom specifications:
"OFA's OFID series and MCCB breakers have proven exceptional across our regional industrial automation deployments. The breaking speed and humidity tolerance under warm climate conditions in Southeast Asia have minimized costly field service calls."
"We upgraded our factory sub-panel panels with OFA intelligent monitoring and OFID RCCB breakers over 18 months ago. Performance has been rock-solid without any spurious tripping despite heavy motor switching surges."
"In our solar rooftop projects in Southeast Asia, component reliability under intense tropical rain and heat is vital. OFA's 4P DC RCCB and DC MCCBs meet all local utility interconnection requirements at very competitive costs."
The OFID Series is specially calibrated for 60Hz supply frequencies commonly used in the Philippines (as opposed to 50Hz in standard European designs). Toroidal cores in our Zero-Sequence Current Transformers are adjusted to maintain exact 30mA, 100mA, and 300mA trip thresholds without frequency-induced variance or nuisance tripping.
Solar inverters can bleed smooth direct residual currents back into grid infrastructure during insulation failure or moisture ingress in solar panels. OFID 4P DC RCCBs utilize Type B sensing technology capable of detecting smooth DC leakages, pulsating DC leakages, and high-frequency AC faults up to 1kHz, fully satisfying modern Philippine solar connection codes.
Yes. All OFA products — including the OFID Series, OFA-M1 MCCBs, and OFKL MCBs — are manufactured in strict compliance with IEC/EN 61008-1, IEC 60947-2, and CE standards. They satisfy the core safety and performance mandates required by the Philippine Electrical Code (PEC) and the Bureau of Philippine Standards (BPS).
Standard order processing and factory production take approximately 15 to 25 days depending on batch size. Direct sea freight from Ningbo/Shanghai port to Manila North/South Harbor typically takes 7 to 10 days in transit. Urgent engineering samples can be shipped via express air freight (DHL/FedEx) within 3 to 5 business days.
Absolutely. We provide comprehensive OEM/ODM services including laser-etched custom logos, customized box packaging, tailored breaking capacities, non-standard tripping curves, and local language instruction manuals. Contact our sales department to discuss minimum order quantity (MOQ) terms.
Get direct technical support, request samples, or obtain factory-direct wholesale pricing tailored for your commercial or utility requirements.
Send Inquiry Now
OFA Electrical