PV-20A-1500
20A 1500VDC gPV fuse for high-current string protection in solar combiner boxes with UV-resistant construction.
Product Overview
Description
The PV-20A-1500 is a gPV-certified fuse designed for high-current solar string protection.
With 1500V DC rating and 20A current capacity, this fuse handles larger strings with high-power modules.
The gPV certification ensures reliable DC interruption in photovoltaic applications.
Product Series
PV
Primary Application
High-current solar string protection
Key Features
- 1500V DC rating for utility-scale solar
- gPV certified per IEC 60269-7
- Fast-acting protection for high-current PV strings
- Compact 10x85mm size
- UV-resistant construction
- Easy installation in combiner boxes
Specifications
| Voltage Rating | 1500V DC |
|---|---|
| Current Rating | 20A |
| Breaking Capacity | 20kA @ 1500V DC |
| Class | gPV |
| Size | 10x85mm |
| Mounting | PV fuse holder |
| Operating Temperature | -40°C to +90°C |
| Standards | IEC 60269-7, UL 248-19 |
Applications
High-current solar string protection
Renewable energy systems
Large module combiner boxes
Electronic system design
Inverter input protection
Electronic system design
High-power string installations
Electronic system design
Utility-scale solar installations
Renewable energy systems
Commercial rooftop solar
Renewable energy systems
FAE Expert Insights
"The PV-20A-1500 is essential for modern high-power solar modules. With modules now exceeding 500W, string currents have increased significantly. The 20A rating handles strings with Isc up to approximately 13A, which is typical for current high-power modules. The 1500V rating supports utility-scale systems with reduced cabling costs. gPV certification is non-negotiable for safety - I've seen too many installations attempt to use standard fuses with dangerous results. For high-power module installations, this fuse provides the current capacity needed while maintaining safety. I recommend this fuse for any installation using modern high-power modules."
High-current gPV protection for modern high-power solar modules
— Jennifer Chen, BeiLuo
Frequently Asked Questions
What module sizes require 20A fuses?
The PV-20A-1500 is suitable for high-power modules with Isc of approximately 11-13A. Modern 500W+ modules typically have Isc in this range. Per NEC 690.9, 1.56 x 13A = 20.3A minimum, making 20A fuse appropriate.
Use for high-power modules with Isc 11-13A. Verify with module datasheet.
What is the difference between 15A and 20A PV fuses?
The PV-15A-1500 is rated for 15A continuous current, suitable for standard modules with Isc 8-10A. The PV-20A-1500 handles 20A for high-power modules with Isc 11-13A. Both have the same 1500V rating and gPV certification.
Select based on module Isc. Use 15A for standard modules, 20A for high-power modules.
Can 20A fuses be used in 1000V systems?
Yes, the 1500V rating is suitable for 1000V systems with excellent margin. The higher voltage rating also allows for future system upgrades to 1500V without changing fuses. For detailed specifications and application support on bussmann PV-20A-1500, refer to the datasheet or contact our team.
Suitable for 1000V systems with margin for future expansion.
What is the breaking capacity at 1500V?
The PV-20A-1500 has a breaking capacity of 20kA at 1500V DC. This is adequate for most PV string fault conditions. The gPV certification verifies safe DC interruption at PV voltages. For detailed specifications and application support on bussmann PV-20A-1500, refer to the datasheet or contact our team.
Verify breaking capacity is adequate for your system fault current calculations.
Are these fuses suitable for bifacial modules?
Yes, PV-20A-1500 fuses are suitable for bifacial modules. Bifacial modules may have slightly higher current due to rear-side irradiance. Size fuses based on the higher Isc values typical of bifacial modules.
Use for bifacial modules. Size based on higher Isc values from bifacial module datasheets.