Designed for critical redundant arrays, delivering exceptional dielectric stability and hot-swappable replacement capability to guarantee continuous backup control logic power.
Engineered for outdoor durability. Provides a secure, low-loss interconnect path between photovoltaic strings and junction boxes with a dustproof, waterproof IP67 rating.
Premium full silver alloy contacts offer exceptional switching endurance, protecting large-scale commercial power systems against persistent earth-leakage faults.
Provides precision active thermal management for high-stress solar inverters, battery management systems, and heat-sensitive industrial control boxes.
A heavy-duty 1000V DC connection assembly, supporting 30A and 45A capacities. Ideal for reliable combiner box integration and inverter terminations.
IEC-compliant rotary disconnector tailored for domestic installations, ensuring swift arc suppression and visual isolation of active PV strings.
Dual safety integration combining pneumatic/hydraulic solenoid interlocks with light-sensitive configuration pathways to ensure physical access safety.
Delivers real-time data telemetry for individual PV string current, terminal voltage, and insulation resistance, maximizing utility-scale efficiency.
The global shift toward comprehensive clean energy transition demands more than simply capturing sunlight; it requires the highly efficient, safe, and continuous conversion of raw photovoltaic current into grid-compliant electrical power. Solar energy conversion devices comprise the essential circuitry, protection interfaces, and thermal systems that prevent massive power outages and physical equipment breakdown.
Within this high-stakes ecosystem, Foshan SDEV Charger Co., Ltd. stands out as a preeminent, trusted manufacturer of protective components for photovoltaic systems across the globe. With a rich history spanning more than 30 years in the electrical industry, the company has developed deep expertise in engineering advanced solar DC protection components that adhere to the most rigorous international standards. SDEV’s absolute focus on solar DC protection design, production, and marketing ensures that developers, EPC contractors, and grid designers receive brand-building, exceptionally reliable PV protection solutions.
Recognizing the critical convergence of renewable generation and local transportation electrification, SDEV has leveraged its three decades of DC engineering excellence to expand into the electric vehicle infrastructure sector. SDEV has dedicated substantial intellectual and operational resources to the research and development of EV-related components, achieving widespread market popularity for their robust, high-performance designs across the world.
When sourcing solar energy conversion components, global engineering procurement officers evaluate risks under a critical microscope. Photovoltaic power arrays operate under extreme conditions: fluctuating currents, rapid temperature changes, intense UV exposure, and potential lightning surges. Any minor component failure—be it a degradation of contacts in a safety disconnector or a dielectric breakdown within a fuse base—can trigger a thermal runaway event, leading to catastrophic physical damage and millions of dollars in downtime.
SDEV mitigates these real-world risks through an unyielding Commitment to Quality. The factory recognizes that high-performance protective gear is the primary safeguard for solar, battery storage, and EV charging investments. To satisfy the safety demands of diverse international markets, SDEV’s entire product line and production facility adhere to strict compliance frameworks, including UL, SAA, CB, CE, TUV, ISO, and RoHS. This extensive list of certifications provides project developers with the reassurance that every single unit leaving the factory floor is engineered to withstand extreme electrical and environmental pressures over a standard 25-year system lifecycle.
Modern commercial and utility solar arrays are transitioning from 1000V DC to higher-voltage 1500V DC layouts. This increase in voltage significantly improves system efficiency and reduces cabling costs, but it requires highly specialized isolation technology. SDEV leverages its internal R&D capabilities to create products that match these evolving market requirements.
SDEV’s continuous product development is driven by a specialized in-house R&D division. By focusing on practical market needs, SDEV introduced the first UL508i listed patented DC switch within China, alongside the advanced DC-PV2 switch designed specifically for the global utility market.
These engineering developments ensure that SDEV’s protective devices offer excellent arc extinguishing capabilities. In DC power lines, electric arcs do not have a natural zero-crossing point like AC lines do, making them harder to extinguish. SDEV's DC-PV2 switch handles this challenge with specialized magnetic blowout and contact systems that interrupt high-voltage arcs in milliseconds.
Through these technological advances in PV safety switches and electric vehicle chargers, SDEV continues to support long-term partnerships with renewable energy developers, EPC contractors, and distributors worldwide.
By using robotic assembly and optical inspection systems, we minimize human error during the calibration of DC switches and circuit breakers, ensuring consistent reliability for every production run.
Located in Foshan, Guangdong, SDEV operates within an established industrial ecosystem. This location provides access to raw materials and electrical component suppliers, reducing lead times and safeguarding production schedules.
Every product undergoes extensive testing, including insulation resistance checks, high-temperature load runs, and contact resistance assessments. Testing logs are linked to production batches to maintain full quality traceabilty.
Challenge: Managing high current and voltage drops over long distances in remote locations with extreme heat.
Solution: Implementing SDEV's 1000V/1500V DC fuses, IP67 MC4 cabling, and high-capacity string monitoring units. These components help maintain circuit integrity and reduce losses from long wire runs.
Challenge: Meeting building safety rules and providing rapid shutdown capabilities to protect maintenance staff and emergency responders.
Solution: Utilizing Aswich rapid shutdown switches and lockable rotary isolators. These devices isolate high DC voltage directly at the PV array, helping to ensure compliance with building safety codes.
Challenge: Keeping critical controllers online during unexpected power switches and system transitions.
Solution: Installing hot-swappable DIN rail power supplies and 3-pole residual current devices. This setup provides stable backup power control and protects sensitive communication hardware from ground leaks.
Designed for 10x38mm fuse links. This CE-certified fuse base offers secure physical protection and isolation for DC combiner box assemblies.
High-rupturing-capacity fuse link engineered to interrupt low-level overcurrents associated with faulted photovoltaic string arrays.
An air-cooled rooftop climate system optimized for control rooms, battery rooms, and substation enclosures.
High-framerate camera module with advanced optical resolution, suitable for automated quality inspection lines and substation monitoring.
Emergency rapid shutdown switch designed to quickly de-energize the DC run cables at the roof level, protecting personnel during emergencies.
A 1000V DC rotary isolator featuring a mechanical door interlock mechanism to prevent access to energized storage cabinets during maintenance.
Sealed solar junction box designed to protect terminations and prevent bypass diode overheating in variable shading environments.
A fast signal amplifier expansion module designed to integrate with automated assembly line networks and control sensors.
SDEV Charger