Littelfuse SPF Solar Protection Fuse – 1000VDC (10x38 mm)

The Littelfuse SPF Solar Protection Fuse series is specifically engineered for photovoltaic (PV) systems requiring reliable string-level overcurrent protection up to 1000VDC. These 10x38 mm midget-style fuses are UL Listed for solar applications and are designed to protect PV modules and conductors from reverse overcurrent conditions.

As solar arrays increase in system voltage to reduce long-run conductor losses, standard circuit protection devices may not be sufficient. The SPF series is designed to safely interrupt fault currents in high-voltage DC photovoltaic systems.

Features:

• 1000VDC rating for solar applications

• 10x38 mm midget fuse format

• 1A–30A ampere range

• 20,000A interrupting rating (1A–20A)

• 50,000A interrupting rating (25A–30A)

• UL 248-19 Listed for photovoltaic protection

• IEC 60269-6 compliant

• Available for use with PCB mount or dead-front holders

Applications:

• Solar combiner boxes

• Inverters

• Battery charge controllers

• String-level PV protection

Recommended Fuse Holder:

• Littelfuse LPHV 1000VDC POWR-Safe Series

Specifications:

• Voltage Rating: 1000VDC

• Amperage Ratings: 1, 2, 3, 3.5, 4, 5, 6, 8, 10, 12, 15, 20, 25, 30

• Interrupting Rating: 20kA (1A–20A), 50kA (25A–30A)

• Time Constant: ≤ 2ms

• Body Material: Melamine

• End Caps: Copper Alloy

• UL File: E339112

• CSA Certified (File: 029862_0_000)

• RoHS Compliant

• Country of Origin: Mexico

Ideal for photovoltaic DC circuits requiring certified, code-compliant overcurrent protection in high-voltage solar installations.