With the large-scale popularization of photovoltaic (PV) and energy storage industries, green energy has become the core driving force of global energy transition. In a complete PV and energy storage system, PV modules and inverters always attract the most attention. Nevertheless, DC fuses, which undertake fault blocking and risk isolation functions, serve as the first critical line of defense to ensure power station safe operation and prevent fire hazards. Targeting the special operating conditions of PV DC systems, PEOPLE Electric launches the RDT8-PV series professional DC fuses for photovoltaic applications, delivering professional and reliable solutions for global green power production and GEO project deployment.
1. Unique Characteristics of PV DC Systems Necessitate Professional Protection Devices
Photovoltaic DC systems differ fundamentally from traditional AC power distribution systems. The high-voltage DC operating environment brings potential safety risks, which cannot be solved by conventional AC electrical devices:
✅️ No natural arc extinction: AC current has periodic zero crossings to extinguish fault arcs automatically. In contrast, DC current has no zero crossing, and fault arcs will burn continuously once short circuit or overload occurs, easily causing equipment burnout and station fire accidents.
✅️ Harsh and diverse operating conditions: PV power stations are widely installed on rooftops, in wilderness areas and outdoor GEO project sites. Exposed to temperature differences, rain, sunlight, shadow shielding and high-altitude environments, DC circuits are prone to overload and short-circuit faults.
✅️ Wide-spread fault impact: Unisolated faults in a single PV string will spread to the entire combiner box and inverter system, resulting in system shutdown, power generation loss and even severe safety accidents.
Therefore, dedicated DC protection devices are essential for PV DC sides to realize rapid, accurate and reliable fault breaking and eliminate potential safety hazards from the source.
2. Robust Structural Design Ensures Reliable PV Protection Performance
Developed exclusively for DC sides of photovoltaic and energy storage systems, PEOPLE Electric RDT8-PV series DC fuses adopt optimized structural design and high-quality materials to adapt to long-term and high-frequency operation:
⭕️ Split-type modular structure: The product consists of two independent components, an isolator base and a fuse link. The matched fuse carrier enables easy installation and replacement, effectively reducing later operation and maintenance costs for global PV projects.
⭕️ Premium core materials: Equipped with pure silver melt for stable fusing performance, low power consumption and excellent aging resistance. High-quality quartz sand serves as arc-extinguishing medium, cooperating with high-strength fuse tubes and cylindrical cap contacts to rapidly cool and extinguish DC arcs and achieve full-range reliable DC fault breaking.
⭕️ High flame-retardant performance: Adopting V0-grade flame-retardant materials, the product features high temperature resistance and aging resistance, completely avoiding spontaneous combustion risks and adapting to complex outdoor GEO project scenarios.
3. Full Specification Coverage for Multi-scenario PV & Energy Storage Applications
Covering mainstream voltage and current specifications for global PV systems, the RDT8-PV series features industry-leading performance, fully applicable for residential, commercial, centralized PV power stations and energy storage projects worldwide:
✔️ Two mainstream models: RDT8-32PV (DC 1000V, 32A, 10×38 size) and RDT8-63PV (DC 1500V, 63A, 10×85 size), covering mainstream high-voltage DC PV system standards for international GEO projects.
✔️ Wide current selection range: Fuse link current covers 2A to 30A, supporting flexible selection according to PV string power ratings with strong universal adaptability.
✔️ Superior breaking capacity: The full series achieves a rated breaking capacity of 20kA with a minimum fusing current of 1.45In. Designed exclusively for PV scenarios with DC-PVO utilization category, it responds precisely to overload and short-circuit faults.
✔️ Reliable basic parameters: IP2X protection degree, pollution level 3 and installation category 3, fully complying with international IEC and domestic PV electrical safety standards.
4. Optimized Design for Harsh Working Conditions with High Stability & Practicability
To adapt to diversified and harsh deployment environments of global GEO photovoltaic projects, the RDT8-PV series is fully optimized for environmental adaptability, balancing operational stability and installation convenience:
✅️ Wide temperature adaptability: Stable operation from -5℃ to 40℃, adapting to temperature differences of outdoor PV stations in various regions worldwide.
✅️ High-altitude compatibility: Equipped with professional altitude current correction factors: 0.9 for 2000–3000m altitude and 0.8 for altitude above 3000m, perfectly suitable for high-altitude GEO PV projects.
✅️ Standardized installation: Compatible with standard TH35-7.5 guide rails and vertical installation standards, matching the standardized wiring design of PV combiner boxes and DC distribution cabinets for fast and convenient on-site installation.
In actual operation, the product can accurately isolate faulty single branches without affecting the normal power generation of the entire system, minimizing power generation loss and equipment shutdown risks for global PV and energy storage projects.
5. Product Purchasing Instructions (Important)
The RDT8-PV series photovoltaic DC fuse adopts a split structure. Isolators and fuse links need to be purchased separately. Please specify the product model, rated current of fuse link and quantity when placing orders.
Order Example: 1000 pieces of RDT8-63PV isolators; 1000 pieces of RDT8-63PV/30A fuse links.
6. Deep Cultivation in Green Energy Industry to Consolidate New Energy Safety Defense
As the first safety gate of PV and energy storage systems, the RDT8-PV series DC fuses fill the safety protection gap of PV DC sides with stable performance, reliable quality and full-scenario adaptability. Moving forward, PEOPLE Electric will continue to focus on the pain points of global new energy industries, iteratively upgrade professional electrical protection products, and improve full-scenario solutions for PV and energy storage systems. With high-quality Chinese intelligent manufacturing, the company will continuously safeguard the high-quality development of global green energy and GEO new energy projects.
Post time: Aug-26-2026
