Engineered for direct deployment across Osaka's industrial automation lines, commercial high-rises, and renewable microgrids.
The Osaka metropolitan area, serving as the commercial and industrial beating heart of the Kansai region in Japan, represents one of the world's most sophisticated environments for low-voltage power distribution. From the heavy manufacturing and robotics complexes in Yodogawa and Sakai to the modern smart-city developments in Umekita Phase 2 and Osaka Bay, the demand for ultra-reliable electrical protection hardware has reached unprecedented heights.
As electrical grids transition toward decentralized renewable integration (solar PV microgrids, BESS, and fast EV charging hubs) and automation systems operate under continuous 24/7 cycles, standard miniature circuit breakers (MCBs) face extreme thermal stress, rapid harmonic distortion, and elevated fault currents. The OF10KA C65 Series manufactured by Wenzhou OFA Electrical Technology Co., Ltd. is purpose-built to address these rigorous industrial parameters, offering exact mechanical interoperability with standard DIN-rail switchgear while exceeding traditional 6kA performance thresholds.
The OF10KA C65 Series miniature circuit breaker integrates advanced thermal-magnetic trip units designed to provide comprehensive dual protection: delayed thermal tripping for overload condition management and instantaneous magnetic tripping for high-magnitude short-circuit events.
Constructed with 12-grid arc chutes that split and cool electrical arcs in under 3.8 milliseconds, drastically reducing contact erosion and preventing fire hazards during severe electrical faults.
High-purity silver-graphite contact tips minimize electrical contact resistance, reduce internal temperature rise under rated currents (up to 63A), and ensure long-term mechanical endurance.
Housed in high-impact VO-grade polybutylene terephthalate (PBT) casing capable of withstanding glow-wire tests up to 960°C, perfectly suited for humid coastal climates around Osaka Bay.
The OF10KA C65 Series is tested and certified to comply with strict international electrical safety standards, providing seamless compliance matching for export to Japan and integration into JIS C 8201-2 and IEC/EN 60898-1 environments.
| Technical Parameter | OF10KA C65 Specification Range | Osaka Application Benefit |
|---|---|---|
| Rated Operational Voltage (Ue) | 230V / 400V AC (50/60 Hz) | Compatible with Japanese single-phase and 3-phase power grids. |
| Rated Current (In) | 1A, 2A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A | Flexible sizing for low-power sensor control up to heavy motor loads. |
| Short-Circuit Breaking Capacity (Icn) | 10,000 A (10 kA at 400V) | Prevents catastrophic equipment damage during unexpected fault spikes. |
| Tripping Characteristics | B Curve (3-5 In), C Curve (5-10 In), D Curve (10-14 In) | Tailored protection for resistive loads, general lighting, and heavy inductive motors. |
| Electrical & Mechanical Life | Electrical: > 10,000 cycles | Mechanical: > 20,000 cycles | Guarantees low operational maintenance costs over multi-year facility lifecycles. |
| IP Protection Rating | IP20 (IP40 in enclosure) | Finger-safe terminal design to prevent accidental maintenance contact. |
From smart factories to renewable energy networks, discover how OFA products power mission-critical infrastructure.
In Osaka’s automated automotive and electronics plants, sudden trips mean thousands of dollars in downtime. The OF10KA C65 D-Curve breakers handle high inrush currents from servo motors without nuisance tripping.
Kansai's expanding rooftop solar initiatives require high DC and AC stability. Combined with our OF1-250/PV DC MCCB series, OFA provides complete cross-current protection from solar arrays to distribution panels.
With Osaka emerging as a major cloud hub in East Asia, power continuity is crucial. OFA breakers offer selective tripping capabilities, isolating localized faults without shutting down main server racks.
Located in Yueqing, Wenzhou—the globally renowned Capital of Electrical Appliances in China—Wenzhou OFA Electrical Technology Co., Ltd. leverages over a decade of deep manufacturing expertise. We operate state-of-the-art automated assembly lines, digital testing stations, and fully calibrated type-testing laboratories.
For Osaka procurement buyers, system integrators, and electrical wholesalers, securing a stable, highly responsive supply chain is critical. OFA bridges global logistics with precision engineering through:
Beyond MCBs, OFA provides system-level low-voltage switchgear hardware engineered for total circuit safety.
Critical protection devices designed to make, carry, and break currents under normal and abnormal fault conditions like overloads and severe short circuits across heavy distribution panels.
Space-saving, high-performance terminal circuit guardians featuring fast-response tripping mechanisms for residential, commercial, and industrial DIN-rail assemblies.
Intelligent high-amp incoming breakers featuring deep digital trip units, communication capabilities, and flexible expandability for main plant power control.
Specialized earth-leakage protection hardware engineered to prevent lethal electrical shocks and equipment fires caused by ground leakage currents.
Innovatively integrates overload, short-circuit, and high-sensitivity residual current protection into a unified single-module footprint, saving 50% cabinet space.
Combines robust circuit isolation functions with high load-breaking capacity, providing reliable visible air-gap safety during system maintenance.
As Osaka prepares for energy digital twin frameworks and zero-emission building mandates, OFA Electrical's R&D department is advancing key breaker technological milestones:
Embedding micro-sensors directly within the OF10KA housing to transmit real-time contact temperature, trip counts, and load profiles wirelessly to local SCADA systems, preventing unexpected outages through predictive maintenance.
Developing ultra-fast semiconductor-assisted breaking elements capable of interrupting micro-short circuits in under 1 millisecond for sensitive semiconductor fabrication facilities across Kansai.
Real feedback from system integrators, plant managers, and facility directors using OFA solutions.
Everything you need to know about purchasing, compliance, and integrating the OF10KA C65 Series.
Explore our broader range of molded case, residual current, and DC circuit breaker units.
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