The TOMZN Solar DC PV Fuse is a high-voltage protection device designed specifically for photovoltaic string applications, ensuring safe and reliable operation of solar power systems up to 1000V DC. Manufactured under the TOMZN brand with model number TOPV-30, these fuses are built in a compact 10×38 mm format and are available in multiple current ratings including 6A, 10A, 15A, 20A, 25A, 30A, and 32A, allowing accurate protection matching for different PV string capacities.
These PV string fuses are engineered to safely interrupt low overcurrent faults commonly found in solar installations, such as reverse current flow and multi-array fault conditions. By isolating faulted strings quickly, they protect solar panels, DC cables, and downstream equipment from thermal damage and electrical stress, improving overall system reliability and lifespan.
With a high DC breaking capacity of 33 kA and a fast response time with a time constant under 1 ms, the fuses provide rapid and effective fault isolation. The minimum interrupting rating of 1.3× In ensures dependable operation even under abnormal fault conditions, making them suitable for demanding solar PV environments.
The TOMZN TOPV-30 fuses comply with IEC 60269-6, EN 60947-3, and DC-20B standards, meeting international safety and performance requirements for photovoltaic systems. They are intended for use in DC string circuits of solar panels and photovoltaic arrays, and for proper protection, it is recommended to install fuses on both the positive and negative terminals of each PV string rated up to 1000V DC.
HIGHLIGHTS
• Designed for solar PV string protection up to DC 1000V
• High-voltage DC fuse suitable for photovoltaic systems
• Compact 10×38 mm fuse size for standard PV fuse holders
• Available current ratings: 6A, 10A, 15A, 20A, 25A, 30A, 32A
• High breaking capacity of 33 kA DC for reliable fault interruption
• Effectively protects against reverse current and multi-array faults
• Fast response with time constant under 1 ms
• Minimum interrupting rating of 1.3 × In
• Ideal for use on both positive and negative PV string terminals
• Complies with IEC 60269-6, EN 60947-3, DC-20B standards
• Fuse element only for 15A, 20A, 25A, 30A, 32A ratings (fuse holder sold separately)
• Suitable for solar panels, photovoltaic arrays, and DC string circuits
