As a leading DC circuit breaker manufacturer with over 15 years of experience. Our comprehensive range includes standard and custom DC MCB & DC MCCB solutions from 1A to 1500A ratings, designed to meet international safety standards.
LETOP DC circuit breaker are better protected with advanced arc extinction technology specifically designed for direct current applications. Our high voltage DC circuit breaker series offers extended operational life with over 20,000 mechanical operations and 8,000 electrical operations under full load conditions. Each DC breaker has trip-free mechanism, preventing manual override during fault conditions, ensuring maximum safety for personnel and equipment.
Fully certified according to the international standard for low-voltage switchgear, ensuring reliable performance and safety for DC applications in solar systems.
Features precise thermal-magnetic trip mechanisms designed to protect DC circuits from damaging overloads and short circuits, minimizing system downtime.
Engineered to withstand the specific conditions of solar installations, including DC voltage requirements (up to 1500V) and ambient temperature ranges.
Designed for easy and secure mounting on standard 35mm DIN rails within combiner boxes, switchboards, and other enclosures, making installation and integration easier.
We offer a comprehensive range of DC circuit breakers, including both Miniature Circuit Breakers (MCBs) for string and sub-array protection, and Molded Case Circuit Breakers (MCCBs) for higher current applications and main circuit protection.
Ideal for precise overcurrent protection and isolation of individual solar strings or smaller DC circuits. DIN rail mounting for easy installation in combiner boxes and enclosures.
Rated Voltage (Ue): 250Vdc, 500Vdc, 1000Vdc
Poles: 1P, 2P, 4P
Rated Current (In): 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A
Breaking Capacity (Icu): 6kA
Rated Voltage (Ue): 250Vdc, 500Vdc, 1000Vdc
Poles: 1P, 2P, 4P
Rated Current (In): 80A, 100A, 125A
Breaking Capacity (Icu): 10kA
Rated Voltage (Ue): 415, 690, 800, 1000, 1140V
Poles: 2P, 3P
Rated Current (In): 320A, 630A
Breaking Capacity (Icu): 20kA, 32kA, 50kA
Trip Unit: Thermal-Magnetic, potentially Electronic,etc.
Rated Voltage (Ue): 750, 1000, 1200, 1500V
Poles: 2P, 3P, 4P
Rated Current (In): 320A, 400A, 630A, 800A, 1600A
Breaking Capacity (Icu): 10kA, 30kA, 35kA, 50kA, 85kA
Trip Unit: Thermal-Magnetic, potentially Electronic, etc.
Designed for higher current ratings and breaking capacities, suitable for main DC disconnects in large C&I or Utility-scale combiner boxes/switchgear, battery bank protection, inverter DC input protection, main DC feeder protection.
Provides reliable protection against both sustained overloads (thermal) and high-current short circuits (magnetic).
Meets IEC 60947-2 standards for interrupting high fault currents in demanding DC environments like solar farms and battery storage systems.
Advanced arc extinguishing technology minimizes arc flash during interruption, enhancing safety and extending the breaker's lifespan.
Snap-on design compatible with 35mm rails for rapid installation and minimal downtime during maintenance.
Reliable performance in a broad range of ambient temperatures, suitable for outdoor and harsh environments.
Supports diverse applications from residential rooftop solar systems to high-voltage industrial PV power station.
Partner with LETOP for reliable, IEC 60947-2 certified DC circuit breaker components designed for solar applications. Contact us for consistent quality, flexible supply, competitive pricing, and expert component support.
With extensive experience in DC protection for large-scale solar applications, LETOP offers a complete range of DC circuit breakers optimized for wide range of voltage systems. From design support and custom solutions to high-volume manufacturing and logistics, we are equipped to meet the unique challenges of your project.
Rigorous testing ensures each breaker meets its certified performance characteristics, critical for the reliability of your systems.
We are committed to handling flexible orders for standard DC circuit breaker ratings required by system manufacturers and OEMs.
Benefit from our manufacturing efficiencies to source certified DC circuit breakers cost-effectively for your projects and products.
Technical guidance available to help select the correct voltage, current rating, pole configuration, and trip curve for your specific PV application
At LETOP, we understand that the reliability of your DC circuit breakers is paramount. That’s why we’ve invested in state-of-the-art manufacturing facilities and implemented rigorous quality control processes at every stage of production. From component selection to final assembly, we are committed to delivering DC breakers that meet the highest standards of performance and safety.
Here you can find some of your common questions related to DC Circuit Breaker, which can help answer your doubts.
We maintain strategic inventory of popular models (1-63A range) with 3-7 day delivery for stock items. Standard production lead time is 2-3 weeks for non-stock configurations, and 4-6 weeks for custom specifications.
Absolutely. We offer comprehensive private labeling services including custom product labels, packaging design, and instruction manuals for your company logo and contact information. OEM services include custom housing colors, modified terminal arrangements, and specialized mounting configurations. Minimum quantities for private labeling start at 500 pieces. We can also provide co-branding options where both company names appear on products, suitable for strategic partnerships.
We handle warranty claims through our streamlined process with typical resolution time of 5-7 business days. Our technical support team can help with complex technical questions, like application engineering consultations and system design reviews, for our tier-2 customers. We also provide detailed reports to help prevent similar issues.
For new partners, we typically start with 30% deposit and 70% before shipment. We accept various payment methods including T/T, Paypal and Alipay. We can also make local currency payments for our specific customers through our local bank account to make transactions easier.
Yes, we offer exclusive territory rights for qualified distributors based on geographic regions or market segments. Requirements include: minimum annual purchase commitment (typically $50,000-100,000 depending on territory size), technical competency demonstration, established customer base in solar/electrical industry, and adequate inventory/service capabilities. Our dealer support includes everything from marketing materials, lead sharing, technical support, and co-op advertising programs. Territory exclusivity is typically granted after 6-12 months of successful partnership performance.
We provide comprehensive marketing support including high-resolution product images, technical datasheets, CAD files, installation guide. Our marketing package includes trade show displays, product samples, demo kits, and technical presentation materials. We offer customizable brochures with your company info, product cross-reference guides, and pricing sheets for you. We also offer sales training, webinars, and can participate in key customer presentations or trade shows in your territory.
We maintain a strict channel management policy with clearly defined territory boundaries and customer segments. When multiple distributors exist in large markets, we usually split up the vertical markets (residential installers vs. commercial EPCs vs. utility contractors). We give top-performing distributors performance-based incentives and exclusive access to new products to maintain healthy competition and protect margins.
Yes, we provide comprehensive technical training programs including training sessions, online certifications, and regular product update webinars. Our training covers product features, competitive advantages, application guidelines, and common troubleshooting scenarios. We offer both basic sales training and advanced technical education for your engineering staff. Training materials are available in multiple languages, and we provide certification programs that your team can use for professional development.
We offer a flexible return policy for distributors including: 100% credit for defective products, 90% credit for unused products returned within 6 months (in original packaging), and 70% credit for obsolete inventory during product transitions. For end-of-life products, we provide 6-month advance notice and offer stock protection programs where we'll buy back remaining inventory at 80% of cost. We also provide transition support including cross-reference guides for replacement products and technical migration assistance to help you convert customers to newer models smoothly.
If no relevant issues are found, please contact us, E-mail:[email protected].
If you have any questions, please contact us and we will reply within 24 hours.
No. 19, Fenjin Road, Dongfeng Industrial Zone, Yueqing, Wenzhou, China 325604
+86-13175631986
