Why Choose the Mersen E1025390 NH120 gPV Photovoltaic Fuse?
The Mersen E1025390 is a premium NH120 gPV photovoltaic fuse-link engineered to provide dependable protection for modern solar photovoltaic systems. Designed specifically for DC applications, this fuse safeguards PV strings, combiner boxes, inverter inputs and associated cabling against overloads and short circuits whilst maintaining reliable long-term operation.
Featuring a 1200 V DC voltage rating and a 100 A current rating, the E1025390 is ideal for commercial, industrial and utility-scale photovoltaic installations. Its square-body construction delivers excellent thermal performance and high interrupting capability, making it suitable for demanding renewable energy environments.
Designed in accordance with recognised photovoltaic fuse standards, the Mersen E1025390 helps protect valuable solar equipment whilst supporting maximum system availability and safe fault interruption throughout the lifetime of the installation.
Key Advantages
Purpose-designed gPV fuse-link for photovoltaic protection.
100 A rated current for high-capacity solar installations.
1200 V DC voltage rating.
Provides full-range protection against overloads and short circuits.
High breaking capacity for dependable DC fault interruption.
Robust square-body construction for demanding applications.
Manufactured by leading circuit protection specialist Mersen.
Key Features
Manufacturer: Mersen.
Manufacturer part number: E1025390.
Product type: Square-body photovoltaic fuse-link.
Fuse characteristic: gPV.
Rated current: 100 A.
Rated voltage: 1200 V DC.
Fuse size: NH120.
Designed for photovoltaic applications.
Suitable for commercial and utility-scale solar installations.
High-performance DC fault protection.
Reliable Protection for High-Voltage Solar Systems
Photovoltaic fuse-links are designed to safely disconnect faulty DC circuits before excessive current can damage solar modules, combiner equipment, cables or inverter electronics. Using purpose-designed gPV fuses helps improve system reliability whilst reducing maintenance costs and downtime.
The Mersen E1025390 combines a high DC voltage rating with dependable fault interruption, making it an excellent choice for protecting modern photovoltaic installations operating under demanding environmental conditions.
Typical Applications
Photovoltaic string protection.
Solar combiner boxes.
Inverter DC input protection.
Commercial rooftop solar installations.
Industrial renewable energy systems.
Utility-scale photovoltaic power plants.
Technical Specifications
Current
80 A
Voltage
200 V
Manufacturer
Mersen
Manufacturer part number
E1025390
Product type
gPV photovoltaic fuse-link
Rated current
100 A
Rated voltage
1200 V DC
Fuse characteristic
gPV
Fuse size
NH120
Body style
Square body
Current type
DC
Application
Photovoltaic circuit protection
Standards
IEC 60269-1, IEC 60269-6
Breaking capacity
High DC interrupting capacity
Frequently Asked Questions
What is the Mersen E1025390 used for?
The Mersen E1025390 protects photovoltaic DC circuits against overloads and short circuits within solar power systems.
What is the current rating of this fuse?
This fuse has a 100 A rated current.
What voltage is the fuse designed for?
The E1025390 is designed for photovoltaic systems operating at up to 1200 V DC.
What does the gPV classification mean?
The gPV operating characteristic provides full-range protection specifically developed for photovoltaic DC circuits.
Where is this fuse commonly installed?
It is commonly installed in photovoltaic combiner boxes, inverter input circuits and other DC distribution equipment used within solar installations.
Trusted by Renewable Energy Professionals
Mersen photovoltaic fuse-links are trusted by solar installers, electrical contractors and renewable energy engineers worldwide for dependable circuit protection in commercial and utility-scale photovoltaic systems.
Current
80 A
Voltage
200 V
Manufacturer
Mersen
Manufacturer part number
E1025390
Product type
gPV photovoltaic fuse-link
Rated current
100 A
Rated voltage
1200 V DC
Fuse characteristic
gPV
Fuse size
NH120
Body style
Square body
Current type
DC
Application
Photovoltaic circuit protection
Standards
IEC 60269-1, IEC 60269-6
Breaking capacity
High DC interrupting capacity
No documents available for this product.
Delivery
We offer fast UK delivery on all stocked items. Orders placed before 3pm Monday to Friday are eligible for next-day delivery.
Standard delivery: 2–3 working days
Next-day delivery: available on in-stock items when ordered before 3pm
Express options available — contact us for details
Returns
If you need to return an item, please contact our sales team within 30 days of receipt. Items must be returned unused in their original packaging.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...