Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
MERSEN FUSE 1000VDC 12A MIDGET PV FUSE HP10M12
Mersen HP10M12 HelioProtection gPV photovoltaic fuse link rated at 12 A and 1000 V DC, with a compact 10 x 38 mm body and ferrule terminals for PV string protection.
£5.35
Why Choose the Mersen HP10M12 Photovoltaic Fuse?
The Mersen HP10M12 is a compact, high-performance gPV photovoltaic fuse link developed specifically to protect solar PV circuits against overcurrents and short circuits. As part of the proven Mersen HelioProtection® HP10M series, it provides dependable protection for photovoltaic string wiring in residential, commercial, industrial and utility-scale solar installations.
Rated at 12 A and 1000 V DC, the HP10M12 is engineered for the distinctive electrical conditions found in photovoltaic systems. Its full-range gPV operating characteristic allows the fuse to interrupt low-level and high-level DC fault currents, helping protect PV modules, cables, combiner boxes and inverter inputs from potentially damaging overcurrents.
The HP10M12 has a compact 10 × 38 mm midget fuse format with ferrule terminals for installation in compatible clip-mounted fuse holders. Its robust construction provides excellent resistance to repeated temperature and current cycling, supporting reliable long-term performance in demanding solar energy applications.
Key Advantages
- Purpose-designed gPV fuse protection for photovoltaic circuits.
- 12 A rated current suitable for PV string protection.
- 1000 V DC voltage rating for high-voltage solar systems.
- Full-range protection against photovoltaic overloads and short circuits.
- Compact 10 × 38 mm midget format.
- Ferrule terminals allow straightforward clip mounting.
- Enhanced resistance to repeated temperature and current cycling.
- Helps improve the safety and service life of solar PV equipment.
Key Features
- Mersen HelioProtection® HP10M series.
- 12 A rated current.
- 1000 V DC rated voltage.
- gPV full-range photovoltaic fuse characteristic.
- 10 × 38 mm cylindrical fuse size.
- Ferrule terminals for clip mounting.
- Designed for low minimum breaking-current capability.
- Suitable for PV string and combiner-box protection.
- Robust construction for continuous thermal cycling.
- Designed for industrial rooftop and utility-scale PV systems.
Reliable Protection for Photovoltaic String Circuits
Solar arrays can continue generating DC current whenever sufficient light is available, even when a fault is present. A correctly selected gPV fuse safely disconnects a faulty string before excessive current damages photovoltaic modules, cables, connectors, combiner equipment or inverter inputs.
The Mersen HP10M12 is designed to withstand the repeated temperature and current variations commonly experienced by outdoor solar installations. Its specialist photovoltaic operating characteristic and compact format make it a reliable choice for protecting individual strings within modern 1000 V DC PV systems.
Typical Applications
- Photovoltaic string circuit protection.
- Residential and commercial solar installations.
- Industrial rooftop photovoltaic systems.
- Utility-scale solar farms.
- PV combiner and array junction boxes.
- Solar inverter DC input protection.
- Off-grid and battery-supported renewable energy systems.
Technical Specifications
Tick the specs you need, then view products that match.
| Voltage | 1000 V | |
|---|---|---|
| Current | 12 A | |
| Device Type | Fuse link | |
| Fuse Type | PV (gPV) | |
| Fuse Class | gPV | |
| Manufacturer | Mersen | |
| Series | HelioProtection® HP10M | |
| Model | HP10M12 | |
| Product type | Photovoltaic fuse link | |
| Fuse utilisation category | gPV | |
| Rated current | 12 A | |
| Rated voltage | 1000 V DC | |
| Current type | DC | |
| Fuse format | Midget cylindrical fuse | |
| Fuse dimensions | 10 × 38 mm | |
| Terminal type | Ferrule | |
| Mounting method | Clip mounting in a compatible fuse holder | |
| Breaking capacity | Up to 50 kA DC | |
| Protection application | Photovoltaic string wiring | |
| Standards | IEC 60269-6 and UL 2579 | |
| Compliance | RoHS compliant | |
| HS Code | 85361050 | |
| Country of Manufacture | Mexico |
Frequently Asked Questions
What is the Mersen HP10M12 used for?
The Mersen HP10M12 protects photovoltaic string wiring, combiner boxes, inverter inputs and other solar DC circuits against overcurrents and short circuits.
What are the current and voltage ratings of the HP10M12?
The fuse has a rated current of 12 A and a rated operating voltage of 1000 V DC.
What size is the Mersen HP10M12 fuse?
The HP10M12 is a compact 10 × 38 mm midget cylindrical fuse with ferrule terminals.
What does the gPV classification mean?
The gPV classification identifies a full-range fuse specifically designed to protect photovoltaic circuits against both overload and short-circuit fault currents.
How is the HP10M12 installed?
The fuse has ferrule terminals and is installed in a compatible 10 × 38 mm clip-mounted photovoltaic fuse holder rated for the system voltage and current.
Trusted by Solar Installation Professionals
Mersen HelioProtection® photovoltaic fuses are widely used by solar installers, renewable energy engineers and panel builders to provide reliable DC circuit protection in modern photovoltaic systems.
