SPD & DC Fuses
Mersen surge protective devices and gPV fuses for AC panels and DC photovoltaic circuits. Type 2 SPDs clamp transient overvoltages from lightning and switching; HelioProtection gPV fuses interrupt string overcurrents at 1000 and 1500 V DC. Both are DIN-rail or plug-in mounted.
Supplied products. Everything on this page is made by other manufacturers and supplied by Ashima Electrotech.
Supplied by Ashima Electrotech · Made by Mersen
HelioProtection gPV fuses
Fast-acting gPV cartridge fuses for PV string, combiner and inverter protection, offered in seven current ratings from 5 to 32 A across two voltage classes.
Full description
Fast-acting gPV-class fuses engineered for low fault currents and high-temperature cycling, protecting PV strings, arrays, combiners, inverters and charge controllers against overcurrent, ground and line faults. The GMG glass-matt-epoxy body and tin-plated copper terminals hold performance under temperature variation. HP10M bodies measure 10×38 mm, HP15M 10×85 mm.
- Fuse class
- gPV, fast-acting
- Body
- GMG glass-matt-epoxy
- Terminals
- Tin-plated copper
- Rated current
- 5 – 32 A
- Standard
- IEC 60269-6
- Approvals
- UL listed, RoHS
| Rated current In | 1000 V DC — 10×38 mm | 1500 V DC — 10×85 mm |
|---|---|---|
| 5 A | HP10M5 | HP15M5 |
| 10 A | HP10M10 | HP15M10 |
| 15 A | HP10M15 | HP15M15 |
| 20 A | HP10M20 | HP15M20 |
| 25 A | HP10M25 | HP15M25 |
| 30 A | HP10M30 | HP15M30 |
| 32 A | HP10M32 | HP15M32 |
Supplied by Ashima Electrotech · Made by Mersen
Modulostar CUS101 fuse holders
Single-pole modular holder that carries the 10×38 mm HP10M and HP6M gPV fuses, available with or without a blown-fuse indicator.
Full description
Part of the Mersen Modulostar range. The holder accepts 10×38 mm gPV cartridges from the HP6M and HP10M series, isolates them behind an IP20 finger-safe barrier for replacement, and clips to standard DIN rail in combiner boxes and inverter enclosures. Lockable and sealable variants are available.
- Rated voltage
- 1000 V DC
- Fuse size
- 10×38 mm
- SCCR
- 100 kA
- Ingress protection
- IP20, finger-safe
- Body
- Flame-retardant thermoplastic
- Mounting
- DIN rail
| Variant | Catalogue code |
|---|---|
| Without blown-fuse indicator | CUS101HEL |
| With blown-fuse indicator | CUS101IHEL |
Supplied by Ashima Electrotech · Made by Mersen
Surge-Trap STP Type 2 SPDs
Pluggable Type 2 surge protective device in one AC and two DC voltage ratings, each with a 40 kA surge capacity and replaceable cartridge.
Full description
Surge-Trap is a modular SPD line: the cartridge plugs out for replacement without rewiring, and a visual indicator reports cartridge status. It diverts up to 40 kA per phase to earth and complies with IEC/EN 61643-11. Voltage protection level for the 1000 V DC model is issued on request.
- SPD type
- Type 2
- Surge capacity
- 40 kA
- Cartridge
- Pluggable, replaceable
- Status
- Visual indicator
- Mounting
- DIN rail
- Standard
- IEC/EN 61643-11
| Application | Rated voltage Uc | Protection level Up | Catalogue code |
|---|---|---|---|
| Low-voltage AC systems | 320 V AC | ≤ 1.5 kV | STP T2 40 320 |
| Photovoltaic DC | 600 V DC | ≤ 2 kV | STP T2 40 600 |
| Photovoltaic DC | 1000 V DC | — | STP T2 40 1000 |
Rated and listed by Mersen.
gPV class fuses
Mersen lists the HelioProtection range as UL-listed and compliant with IEC 60269-6, the photovoltaic fuse standard.
Type 2 surge protection
Surge-Trap SPDs comply with IEC/EN 61643-11 and carry 40 kA of surge current per phase.
Replaceable cartridges
SPD cartridges plug out for replacement without rewiring; a window indicates a spent cartridge.
100 kA SCCR
The Modulostar holder is rated to a 100 kA short-circuit current and is finger-safe to IP20.
What to send us
String current and array voltage fix the fuse; the panel it protects fixes the SPD. Send these with the quantity and delivery city and we will quote.
- 01 String short-circuit current A
- 02 Maximum system voltage V DC
- 03 Number of strings to protect count
- 04 AC or DC side of the inverter AC / DC