Mersen C1003998 DC121GPV12C160E HelioProtection gPV photovoltaic fuse rated 160 A at 1200 V DC, size 121 (T121) body, full-range protection for PV strings, arrays and DC circuits per IEC 60269-6.
£214.58
The Mersen C1003998 is a gPV photovoltaic fuse from Mersen's HelioProtection® range, identified by catalogue number DC121GPV12C160E. Rated at 160 A and 1200 V DC in a compact size 121 (T121) body, it is purpose-built to protect photovoltaic strings, arrays and DC distribution equipment against damaging overcurrents and short circuits.
Unlike general-purpose fuses, gPV class fuses are designed specifically for the demanding conditions of solar installations: sustained DC arcs, low fault currents close to the operating current, and wide outdoor temperature swings. The C1003998 provides full-range protection in accordance with IEC 60269-6, safely clearing both low overcurrents and high fault currents in DC circuits up to 1200 V.
Photovoltaic arrays present a unique protection challenge: fault currents are often only slightly higher than normal operating currents, and DC arcs do not self-extinguish the way AC arcs do. The Mersen C1003998 addresses this with a gPV element designed to detect and clear these low-level faults before they damage cables, connectors or modules, while its 1200 V DC rating provides the headroom required by contemporary string and central inverter systems.
| Current | 160 A |
|---|---|
| Voltage | 200 V |
| Manufacturer | Mersen |
| Series | HelioProtection® gPV Photovoltaic Fuses |
| Model | C1003998 |
| Catalogue number | DC121GPV12C160E |
| Fuse class | gPV (photovoltaic, full-range) |
| Rated current | 160 A |
| Rated voltage | 1200 V DC |
| Body size | 121 (T121) |
| Standard | IEC 60269-6 |
| EAN | 3605340478624 |
| Weight | 0.3 kg |
| Packed quantity | 1 |
The C1003998 is a gPV photovoltaic fuse used to protect PV strings, arrays and DC-side equipment such as combiner boxes and inverters against overcurrents and short circuits.
It is rated at 160 A with a rated voltage of 1200 V DC.
gPV is the full-range photovoltaic fuse class defined by IEC 60269-6. gPV fuses can safely clear both low overcurrents and high short-circuit currents in DC solar circuits.
The C1003998 uses the compact Mersen size 121 (T121) body, reflected in its catalogue number DC121GPV12C160E.
The fuse is designed in accordance with IEC 60269-6, the international standard for photovoltaic fuse links.
Mersen HelioProtection fuses are a proven choice for solar installers and OEMs who need dependable DC circuit protection in photovoltaic installations.
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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...