High-capacity 1P to 4P DIN-rail mounted circuit breakers designed specifically for commercial buildings, manufacturing hubs, and power sub-panels across Luzon.
Metro Manila stands as the economic core of the Philippines, driving rapid commercial expansion across Makati, Bonifacio Global City (BGC), Ortigas, and expanding industrial corridors in Cavite, Laguna, and Bulacan. However, the region presents unique electrical engineering challenges:
Electrical engineers, panel builders, and EPC contractors working on Manila infrastructure projects require low-voltage protection devices that offer superior thermal stability, reliable arc quenching performance, and strict compliance with IEC 60898-1 standards. The OFDL Series Miniature Circuit Breaker (MCB) by Wenzhou OFA Electrical Technology Co., Ltd. is purpose-engineered to bridge high-capacity short-circuit protection with tropicalized material durability.
Wenzhou OFA Electrical Technology Co., Ltd., rooted in Yueqing for over a decade, provides international partners with high-performance distribution switchgear and control equipment.
Founded in 2013, Wenzhou OFA Electrical Technology Co., Ltd. is located in Yueqing, Wenzhou—the recognized Capital of Electrical Appliances in China. We own independent brands such as "OFA", with products covering multiple industries and applications including power systems, renewable energy, industrial automation, commercial construction, and equipment manufacturing.
We adhere to honest and law-abiding operations, have been rated as tax credit grade A for seven consecutive years, and have earned the long-term trust of numerous global clients. Our team possesses solid experience in the R&D and manufacturing of low-voltage components, providing flexible OEM/ODM solutions for diverse application scenarios in Southeast Asia and beyond.
Our technical team continues to delve deep into R&D of switchgear equipment. Equipped with full-process type testing devices, enabling rigorous verification of mechanical life, temperature rise, and insulation performance.
Through flexible production combining standardization and customization, we precisely match customer specifications, delivering cost-effective configurations supported by responsive long-term service networks.
Digital inspection stations and automated assembly lines guarantee every component undergoes strict in-process quality control, steadily outputting defect-free units at reasonable cost structures.
Certified to ISO9001 and international safety standards, our components maintain consistent calibration, lowering operational risk across high-density urban power networks.
Designed for seamless DIN-rail integration inside main distribution boards (MDB), sub-distribution boards (SDB), and OEM control panels.
| Technical Parameter | OFDL Series Standard Specification | Manila Market Engineering Relevance |
|---|---|---|
| Number of Poles (P) | 1P, 2P, 3P, 4P | Supports single-phase 230V residential and 3-phase 400V commercial/industrial installations. |
| Rated Current (In) | 1A, 2A, 3A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A | Flexible current rating spectrum matching light lighting loads up to heavy industrial machinery. |
| Rated Voltage (Ue) | AC 230V/400V (60Hz compatible) | Full frequency and voltage compliance with Philippine National Standards (PNS) & PEC. |
| Rated Breaking Capacity (Icn) | 6,000A / 10,000A (IEC 60898-1) | Mitigates extreme transformer secondary short-circuit currents common in high-density urban grids. |
| Tripping Characteristics | B Curve (3-5In), C Curve (5-10In), D Curve (10-14In) | C & D curves tailored for high initial surge currents from air conditioning units & pump motors. |
| Insulation Voltage (Ui) | 500V AC | Prevents dielectric breakdown during seasonal lightning overvoltage events in Luzon. |
| Protection Degree | IP20 (IP40 in enclosure) | Prevents accidental direct finger contact and particulate ingress inside panelboards. |
| Electrical / Mechanical Life | 10,000 Operations / 20,000 Operations | Ensures decades of maintenance-free service under continuous operational switching demands. |
Features a 12-plate arc chute design that rapidly stretches and cools the electric arc generated during short circuits. This reduces contact erosion and limits thermal stress on internal panel busbars.
Calibrated thermostatic bimetal strips provide inverse time-delay tripping for overload conditions, compensating for ambient temperature fluctuations common in Philippine electrical rooms.
High-speed magnetic plunger coil instantly triggers the latch mechanism within milliseconds when fault currents exceed pre-set thresholds, safeguarding downstream copper wiring.
The OFDL Series is specifically packaged to fulfill diverse operational demands across modern Philippine commercial, residential, and industrial environments.
Deployed in sub-distribution boards across office towers in BGC and Makati. The OFDL Series protects localized branch circuits for HVAC chillers, LED lighting arrays, and server room power distribution units (PDUs).
Ideal for manufacturing plants in Cavite (FCIE), Laguna Technopark, and Batangas. OFDL 3P and 4P breakers handle three-phase motor loads, automated assembly conveyors, and heavy processing switchgear.
With Luzon’s booming rooftop solar installations, OFDL series breakers provide downstream AC isolation and overcurrent defense between grid-tied solar inverters and main service entrances.
Selective tripping coordination ensures localized branch faults do not cascade to upstream breakers, maintaining 99.999% power availability for critical telecom infrastructure in Metro Manila.
Customized OEM consumer units featuring OFDL MCBs coupled with residual current devices (RCBOs) safeguard modern residential developments in Quezon City and Pasig against earth leakage risks.
Protects AC fast charging stations deployed in commercial parking garages against thermal overload and short-circuit faults during prolonged vehicle charging cycles.
In addition to the OFDL Series MCB, Wenzhou OFA Electrical Technology Co., Ltd. supplies a complete ecosystem of circuit protection components for global procurement buyers.
Designed to make, carry, and break currents under normal and abnormal conditions such as short circuit and thermal overload in high-ampere feeder lines.
Leveraging Yueqing’s centralized electrical manufacturing cluster to provide uncompromised technical performance at competitive direct-factory pricing.
Eliminate intermediary distributor markups. Sourcing directly from our Yueqing production base grants Manila electrical contractors a 20% to 35% cost advantage without compromising on IEC certified safety standards.
We provide custom laser branding, tailored current setting calibrations, private label packaging, and specialized housing color options to match local Philippine brand distributions.
With established maritime logistics routes from Ningbo/Shanghai port straight to Manila South Harbor and Batangas Port, standard lead times are optimized for urgent project timelines.
Submit circuit single-line diagrams (SLD) or current/voltage requirements to our technical engineering desk.
Rapid dispatch of OFDL MCB sample units for local Manila panel test assembly and dielectric verification.
Automated assembly lines produce bulk orders under strict 100% routine dielectric and thermal trip testing.
Complete customs export paperwork, Certificate of Origin (Form E for ASEAN tariff exemptions), and direct shipment.
See why global industry leaders and regional integrators rely on OFA for their critical power distribution networks.
"As an EPC contractor executing commercial sub-distribution setups in Metro Manila, finding reliable MCBs that withstand hot panel enclosure temperatures was crucial. OFA’s OFDL Series breakers passed all local inspector tests seamlessly."
"We purchased OFA's intelligent power monitoring devices and OFDL miniature circuit breakers to upgrade our workshop distribution panels. Operating smoothly for over a year with zero false trips."
"OFA’s product range is comprehensive, simplifying our procurement for industrial automation projects. Quality is remarkably consistent batch after batch."
Clear, direct answers regarding OFDL Series technical specifications, compliance standards, and order logistics.
Manila’s high tropical temperatures and moisture levels often cause thermal derating and dielectric tracking in lower-grade components. The OFDL Series utilizes high-CTI flame-retardant polyamide housing, silver-alloy contacts, and robust 6kA/10kA breaking mechanisms engineered to operate stably in high-humidity 60Hz systems governed by MERALCO and Philippine Electrical Code (PEC) standards.
Yes. We offer complete OEM/ODM solutions, including custom shell color molding, personalized laser printing for logos and model designations, custom box packaging, and custom thermal trip curve tuning for specific industrial applications across the Philippines.
Our core circuit breaker products are certified under international standards such as CE, IEC 60898-1, IEC 60947-2, and CCC. Factory operations strictly comply with ISO9001 quality management guidelines, incorporating 100% full inspection routine SOPs before export shipment.
Standard order lead times range between 15 to 25 days depending on batch size. We support FCL/LCL ocean freight directly from Ningbo or Shanghai port to Manila South/North Harbor or Batangas Port, as well as air express for urgent sample requests.
Yes! We provide Form E Certificates of Origin, enabling Philippine buyers to clear customs under preferential zero or reduced import tariff rates under ACFTA agreements.
Explore our complete lineup of MCB, RCBO, and MCCB units available for immediate export procurement.
Partner with Wenzhou OFA Electrical Technology Co., Ltd. for direct manufacturer pricing, custom OEM solutions, and factory-backed quality guarantees.
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