Engineered for extreme reliability, breaking capacity precision, and seamless integration into Spanish commercial and industrial electrical distribution boards.
Spain is undergoing one of the most ambitious energy matrix transformations in Western Europe. Under the revised National Integrated Energy and Climate Plan (PNIEC 2023-2030), Spain targets generating 81% of its electricity from renewable sources by 2030, driven primarily by massive solar photovoltaic (PV) utility installations in regions like Extremadura, Andalucia, and Castilla-La Mancha, coupled with distributed commercial solar across industrial corridors in Catalonia, Madrid, and the Basque Country.
This rapid shift toward decentralized generation, alongside the acceleration of electric vehicle (EV) charging infrastructure and smart grid modernization, introduces complex electrical challenges: high short-circuit potential, harmonic distortion, bidirectional power flows, and thermal stress caused by continuous maximum-load operating conditions. In this demanding landscape, standard electrical protection devices fall short. Spanish engineering firms, panel builders (cuadristas), OEMs, and EPC contractors increasingly demand specialized Molded Case Circuit Breakers (MCCBs) that deliver robust dielectric strength, precise thermal-magnetic tripping adjustments, long mechanical endurance, and complete compliance with European directives.
Technical Insight for Spanish Procurement Managers: The OFA-M1 Series MCCB has been specifically engineered to operate reliably under severe ambient temperature variations (up to +70°C derating curve capabilities) common in Iberian solar farms, while offering breaking capacities (Icu) reaching up to 85kA at 400/415V to safeguard modern high-fault-current industrial distribution systems.
OFA-M1 Series MCCBs operate seamlessly on the AC side of central and string inverters, providing overload and short-circuit isolation up to 630A, preventing thermal runaway and catastrophic arc events in high-irradiance solar installations across Southern Spain.
Spain's robust manufacturing sector—spanning auto plants in Valencia and Zaragoza to chemical complexes in Tarragona—relies on OFA-M1 125A to 630A breakers to protect heavy inductive loads, motor control centers (MCC), and automated production lines.
With the boom of logistics hubs along the Mediterranean Corridor, OFA-M1 devices ensure main electrical panel protection, facilitating sub-distribution with selective tripping to eliminate nuisance outages in mission-critical distribution facilities.
Rigorously tested in accordance with international standards, delivering uncompromised protection across all frame sizes.
| Parameter / Model Frame | OFA-M1-63 | OFA-M1-125 | OFA-M1-250 | OFA-M1-400 | OFA-M1-630 |
|---|---|---|---|---|---|
| Rated Current (In) Range | 16A - 63A | 63A - 125A | 125A - 250A | 250A - 400A | 400A - 630A |
| Number of Poles | 3P / 4P | 3P / 4P | 3P / 4P | 3P / 4P | 3P / 4P |
| Rated Insulation Voltage (Ui) | 800 V | 800 V | 800 V | 1000 V | 1000 V |
| Rated Impulse Withstand (Uimp) | 8 kV | 8 kV | 8 kV | 12 kV | 12 kV |
| Ultimate Breaking Capacity (Icu @ 400V) | 36 kA / 50 kA | 36 kA / 50 kA | 50 kA / 65 kA | 50 kA / 85 kA | 50 kA / 85 kA |
| Service Breaking Capacity (Ics) | 100% Icu | 100% Icu | 100% Icu | 100% Icu | 100% Icu |
| Trip Unit Technology | Thermal-Magnetic | Thermal-Magnetic | Thermal-Mag / Electronic | Electronic LSI | Electronic LSI / Smart IoT |
| Standard Compliance | IEC / EN 60947-2, CE, RoHS, UNE-EN 60947-2 (Spain) | ||||
The OFA-M1 Series incorporates a multi-grid arc chute design utilizing specialized gas-evolving insulating materials. Upon contact separation under high short-circuit fault conditions, the arc is instantly drawn into the arc chamber, divided, and extinguished within milliseconds, drastically limiting let-through energy (I²t) and protecting downstream cables and sensitive automation hardware.
Flexibility is paramount for system integrators. The OFA-M1 series offers field-installable internal accessories including Shunt Trips (MX), Undervoltage Releases (MN), Auxiliary Contacts (OF), and Alarm Contacts (SD). External accessories such as rotary handle mechanisms and motorized operating mechanisms enable seamless synchronization with SCADA platforms.
From heavy molded case circuit breakers to precision miniature circuit breakers and residual current protection devices.
Complementary low-voltage control and protection equipment engineered in our digitalized manufacturing facility.
For Spanish electrical distributors, panel builders (cuadrististas), and EPC project procurement teams, navigating European supply chain disruptions while maintaining strict price-performance ratios is a critical operational objective. Partnering directly with Wenzhou OFA Electrical Technology Co., Ltd. unlocks a structured manufacturing advantage that bridges China’s advanced electrical manufacturing industrial ecosystem with Spain’s rigorous compliance environment.
Founded in 2013 and situated in Yueqing, Wenzhou—universally recognized as the Capital of Electrical Appliances in China—Wenzhou OFA Electrical Technology Co., Ltd. operates state-of-the-art automated manufacturing lines. By maintaining full vertical integration from silver-alloy contact stamping, thermosetting plastic molding, and arc-chamber assembly to computerized calibration, OFA ensures total control over component tolerances and production costs. We hold a proven track record of maintaining a Grade A Tax Credit rating for seven consecutive years, demonstrating transparent, compliant, and trustworthy corporate governance.
Every single OFA-M1 MCCB undergoes strict in-process standard operating procedures (SOP). Our internal quality assurance center executes comprehensive verification protocols prior to export:
Deploying switchgear into the Spanish national electrical grid requires complete adherence to European directives and local regulations administered by the Ministry for the Ecological Transition and the Demographic Challenge (MITECO). OFA products are designed and certified to meet the highest safety benchmarks:
The OFA-M1 MCCB series complies fully with UNE-EN 60947-2 (Low-voltage switchgear and controlgear - Part 2: Circuit-breakers). This guarantees seamless installation approval by Spanish regional electrical inspection authorities (OCA - Organismo de Control Acreditado).
All products bear valid CE certification, backed by complete EU Declaration of Conformity (DoC) documentation, RoHS environmental compliance reports, and REACH SVHC declarations required for smooth customs clearance at major Spanish ports like Valencia, Barcelona, and Algeciras.
As industrial automation advances toward Industry 4.0 and smart microgrids gain momentum throughout Western Europe, power distribution equipment must evolve from passive protection hardware to active intelligence nodes. OFA Electrical Technology is actively expanding the OFA-M1 series capabilities along three key innovation axes:
Founded in 2013, Wenzhou OFA Electrical Technology Co., Ltd. has established itself as a premier developer and manufacturer of low-voltage distribution switchgear and control equipment. Rooted in Yueqing, China’s electrical capital, our brand "OFA" powers infrastructure, industrial automation, and renewable energy projects across more than 50 countries worldwide.
Through a lean production strategy combining high standardization with flexible OEM/ODM customization, we provide Spanish distributors and system integrators with cost-effective, time-tested protection solutions engineered to exact client specifications.
Discuss Custom OEM SolutionsIn-depth technical and commercial answers tailored for electrical engineers, panel builders, and procurement officers.
The OFA-M1 Series is engineered with high-grade flame-retardant thermosetting housing materials capable of withstanding ambient operating temperatures up to +70°C (with standard calibration at +40°C). In sun-drenched Spanish regions like Andalusia or Extremadura where solar combiner boxes and outdoor distribution panels experience extreme heat, OFA-M1 MCCBs maintain calibrated tripping accuracy without premature nuisance tripping. Furthermore, internal metallic components receive anti-corrosion plating to resist humid coastal atmosphere in ports like Valencia or Barcelona.
Yes. The OFA-M1 Series fully satisfies the requirements of standard UNE-EN 60947-2, which is mandatory under Spain’s Reglamento Electrotécnico para Baja Tensión (REBT). The product carries CE marking and meets the European Low Voltage Directive (LVD 2014/35/EU), enabling smooth sign-off by accredited Spanish technical inspection agencies (OCA).
The OFA-M1 Series covers breaking capacities ranging from 36kA up to 85kA at 400/415V AC. Crucially, the service breaking capacity (Ics) for OFA-M1 MCCBs is rated at 100% of Icu across most frame sizes. This means that even after clearing a maximum short-circuit fault, the breaker remains fully functional without degradation of dielectric performance.
Absolutely. Wenzhou OFA Electrical Technology Co., Ltd. provides complete OEM/ODM solutions. We offer customized front-plate printing, private labeling, custom enclosure colors, tailored packaging, and specific trip curve adjustments (B, C, D curves for MCBs; thermal adjustment parameters for MCCBs) to help Spanish brand owners strengthen their local market presence.
Located near major shipping ports in Ningbo and Shanghai, OFA maintains a continuous stock of core sub-assemblies and standardized raw materials. Standard catalog models can be dispatched within compressed production windows. Freight shipments reach Spanish Mediterranean ports (Valencia/Barcelona) via established direct ocean routes within 25–30 days, with express air cargo options available for urgent spare-parts fulfillment.
The OFA-M1 series features a snap-in modular accessory architecture. Available accessories include Shunt Trip Release (MX), Undervoltage Release (MN), Auxiliary Switch (OF), Alarm Switch (SD), Direct Rotary Operation Handles, Extended Door-Interlocked Rotary Handles, and Motorized Operating Mechanisms (CD) for remote circuit restoration.
Thermal-magnetic trip units utilize bimetallic strips for overload protection and electromagnetic solenoids for instant short-circuit tripping, offering robust, cost-effective defense for standard power distribution. Electronic trip units (available on OFA-M1 250A through 630A frames) use microprocessors to sense current RMS values, providing highly granular adjustment settings for Long-time delay (L), Short-time delay (S), and Instantaneous (I) protections, ideal for selective coordination in complex industrial networks.
Engineering contractors and qualified importers can request evaluation samples directly by clicking our "Send Inquiry Now" button or submitting project single-line diagrams (SLD) through our contact portal. Our technical sales team provides fast evaluation, sample configuration, and full type-test certificates (CE/IEC).
Partner with Wenzhou OFA Electrical Technology Co., Ltd. for factory-direct prices, certified IEC performance, and tailored supply chain support in Spain.
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