Solar DC Fuse
Solar DC fuses provide string-level overcurrent protection on the PV DC side, isolating faulted strings before they damage cabling or modules. This page helps you select current rating, pole, and indicator option.
What Is a Solar DC Fuse
A solar DC fuse is a gPV-class overcurrent device that protects individual PV strings from reverse and over-current faults, breaking the circuit safely at high DC voltages where standard AC fuses cannot. TYPLE’s TPF7-32 series is rated 1–32 A at DC 1000 V in a 10×38 mm format, with a 33 kA breaking capacity and UL94 V-0 flame-retardant PBT housing. It is engineered to align with IEC 60269-6; component-level certificates are available through TYPLE’s qualified supply-chain partners.
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TYPLE is a Wenzhou-based manufacturer of PV combiner boxes and DC protection components for solar and energy storage systems.
Get Your Quote Within 24 Hours
TYPLE is a Wenzhou-based manufacturer of PV combiner boxes and DC protection components for solar and energy storage systems.
Applications
- Combiner box strings: per-string overcurrent protection.
- Off-grid arrays: fault isolation in remote systems.
- BESS DC side: overcurrent protection in battery enclosures.
Solar DC Fuse Series
- Rated current: 1 / 2 / 3 / 4 / 5 / 6 / 8 / 10 / 12 / 15 / 16 / 20 / 25 / 30 / 32 A
- Rated voltage (Ue): DC 1000 V /1500V
- Breaking capacity: 33 kA
- Operating temperature: −30 °C to +70 °C
- Humidity: ≤95% RH
- Reference standard：Engineered to align with IEC 60269-6 (gPV). Component-level certificates available through qualified supply-chain partners.
OEM & Customization
TYPLE supplies DC fuses and fuse holders for OEM combiner box assembly, with current rating and pole configuration matched to your string design.
Frequently Asked Questions
DC arcs do not self-extinguish like AC, so PV circuits need gPV-class DC fuses rated for the array voltage to break faults safely.
The TPF7-32 is a single-pole (1P) fuse; the TPF7-32X is a two-pole (2P) version that adds a blown-fuse indicator light for faster fault location.
The TPF7-32 series covers 1 A to 32 A across 15 rating steps, at DC 1000 V with a 33 kA breaking capacity.
