

The SPF Solar Protection Fuse series has been specifically designed for the protection of photovoltaic (PV) systems.This family of Midget style fuses (10 x 38 mm) can safely protect PV modules and conductors from reverse overcurrent conditions. As PV systems have grown in size, so have the corresponding voltage requirements. This increase in system voltage has typically been intended to minimize power loss associated with long conductor runs. Standard circuit protection devices are not designed to completely protect photovoltaic panels. However, the SPF series is UL Listed to safely interrupt faulted circuits up to this demanding voltage level.
Recommended Fuse Holders
LPHV Series 1000 Vdc Dead-Front
- UL 248-19 Listed
- Meets IEC 60269-6 performance requirements
- 1-30 A ratings available
- 20,000 A Interrupting Rating: 1A - 20A
- 50,000 A Interrupting Rating: 25A - 30A
- UL 248-19 Listed
- Meets IEC 60269-6 performance requirements
- 1-30 A ratings available
- 20,000 A Interrupting Rating: 1A - 20A
- 50,000 A Interrupting Rating: 25A - 30A
SPFS Parts
Filters
Showing 1 to 12 of 14 Total Results
Part Number | Actions | Current Rating (Continuous) in Amps | Interrupting Rating | Opening | Voltage Rating (V) | Size |
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Part Number | Actions | Current Rating (Continuous) in Amps | Interrupting Rating
| Opening | Voltage Rating (V) | Size | |
---|---|---|---|---|---|---|---|
1 | 20 kA | Fast-Acting (F) | 1000 | Midget | |||
2 | 20 kA | Fast-Acting (F) | 1000 | Midget | |||
3 | 20 kA | Fast-Acting (F) | 1000 | Midget | |||
4 | 20 kA | Fast-Acting (F) | 1000 | Midget | |||
5 | 20 kA | Fast-Acting (F) | 1000 | Midget | |||
6 | 20 kA | Fast-Acting (F) | 1000 | Midget | |||
8 | 20 kA | Fast-Acting (F) | 1000 | Midget | |||
10 | 20 kA | Fast-Acting (F) | 1000 | Midget | |||
12 | 20 kA | Fast-Acting (F) | 1000 | Midget | |||
15 | 20 kA | Fast-Acting (F) | 1000 | Midget | |||
20 | 20 kA | Fast-Acting (F) | 1000 | Midget | |||
25 | 50 kA | Fast-Acting (F) | 1000 | Midget |
SPFS Applications
- Inverters
- Combiner boxes
- Battery charge controllers
Series: SPFS Resources

Littelfuse Solar Products Catalog
Find fuses, TVS diodes, protection relays, varistors, and IGBT power modules for solar energy applications.