In the rapidly growing world of renewable energy, solar photovoltaic (PV) systems demand reliable overcurrent protection to ensure safety, efficiency, and longevity. TOMZN, a trusted leader in new energy electrical solutions since 2002, offers a comprehensive range of DC fuses and fuse holders specifically engineered for high-voltage solar applications. With certifications including CE, TUV, and compliance with international standards like IEC 60269-6 and EN 60947-3, TOMZN fuses deliver dependable performance in demanding environments.
Why DC and PV Fuses Are Essential for Solar Installations
Unlike AC systems, DC circuits in solar setups do not naturally extinguish arcs, making overcurrent faults potentially hazardous. Specialized solar PV fuses protect against reverse currents, multi-array faults, and low-level overcurrents that could damage panels, inverters, or batteries. TOMZN’s high-voltage DC fuses are designed to interrupt faults quickly (with time constants under 1ms), safeguarding both positive and negative terminals of PV strings. These gPV-rated fuses meet the unique requirements of photovoltaic systems, providing isolation and protection up to 1500VDC.
TOMZN Fuse Product Range: Tailored for Modern Solar Needs
TOMZN’s fuse category features two primary voltage ratings to support evolving solar technology:
- 1000VDC PV Fuses: Ideal for most residential and commercial installations. Available in current ratings from 3A to 32A, these cylindrical fuses (10x38mm) offer a high breaking capacity of up to 33kA DC. Popular packs include 10-piece sets for cost-effective bulk protection.
- 1500VDC PV Fuses: Built for larger-scale or utility-grade solar arrays. These support currents from 2A to 50A, with sizes of 10x85mm (up to 32A) and 14x85mm (for higher currents). Breaking capacity reaches 20kA DC, ensuring robust fault interruption in high-voltage strings.
Complementing the fuses are TOMZN’s DC fuse holders, including models like TOPV-30 and TOPV-32X series. These DIN-rail mountable holders come in 1P, 2P, 3P, and 4P configurations, with options for parallel setups. Rated up to 1100V or 1500V, they accommodate 10x38mm, 10x85mm, or 14x85mm fuses and often include LED indicators for blown fuse detection.
Key Features and Benefits of TOMZN Fuses
TOMZN prioritizes safety and durability in every product:
- High Breaking Capacity: Quickly clears faults to minimize damage and downtime.
- Fast Response Time: Low time constant ensures rapid protection against overcurrents.
- Wide Current Range: From 2A to 50A, suitable for various string configurations.
- Standards Compliance: Meets IEC 60269-6, EN 60947-3, and DC-20B for global reliability.
- Robust Construction: Designed for harsh outdoor conditions, with reliable performance in extreme temperatures.
- Easy Integration: Compatible with standard DIN-rail mounting and available as single units or packs.
These features make TOMZN fuses an excellent choice for installers and system owners seeking long-term protection. By preventing faults from escalating, they extend the lifespan of solar components and reduce maintenance costs.
Applications of TOMZN DC and PV Fuses
TOMZN fuses excel in:
- Residential and commercial rooftop solar systems.
- Ground-mounted PV arrays.
- Off-grid and hybrid battery storage setups.
- DC combiner boxes and string protection.
- High-voltage solar installations requiring 1500V compatibility.
Whether protecting individual panels or entire arrays, these fuses ensure safe, efficient operation in photovoltaic environments.
Why Choose TOMZN for Your Solar Fuse Needs?
TOMZN stands out as a manufacturer committed to innovation and quality in new energy protection. With a focus on photovoltaic-specific solutions, their products undergo rigorous testing to meet international standards. Positive feedback from users highlights reliability, ease of installation, and competitive pricing. For professionals and DIY enthusiasts alike, TOMZN offers peace of mind with proven performance in real-world solar deployments.
