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Protecting Photovoltaic Systems with Solar Fuses

Littelfuse, with 60 million devices in photovoltaic power systems, comprehends the global challenges of the solar market. Littelfuse, with 60 million devices in photovoltaic power systems, comprehends the global challenges of the solar market. Our array of circuit-protection products is tailored to safeguard equipment and systems amid the demanding conditions of standard photovoltaic installations.

Littelfuse Solar Fuses Manufactured in Suzhou, China

Littelfuse Suzhou China Solar Plant - Exterior Shot

Assorted group of white and silver Littelfuse fuses

Littelfuse Suzhou China manufacturing plant

To address the soaring demand for solar energy in Asia, Littelfuse has extended solar fuse production at its Suzhou, China plant. This strategic move aims to:

Halve order lead times
Accelerate responses to inquiries and provide regional support
Leverage the plant's 25 years of manufacturing expertise with a skilled workforce

Our award winning Suzhou plant is equipped with over 6,000 square meters of manufacturing space, a team of 500 employees, and holds GB/T 19001-2016 / ISO 9001:2015 / IATF 16949:2016 certification. With 50% increased capacity, low-power testing capabilities, and a commitment to maintaining product quality, this expansion ensures reliable support for the growing global demand for solar fuses.

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Littelfuse Solar Fuses

The Littelfuse family of solar fuses are designed specifically to protect photovoltaic (PV) systems. Unlike standard circuit protection devices, these fuses are built to withstand the harsh environments of solar applications such as extreme temperatures and isolated or elevated locations as well as high-voltage levels.

	Littelfuse Product
	SPXI_CN Series In-line Solar Fuse	1500 V dc Up to 32 A Offers higher amperage protection in less space for increased design flexibility One-piece cap design, without joints, offers easier wire crimping and more streamlined molding Can be electrically insulated by either over-molding or using heat shrink No fuse holder required helps save space, time, and money
	SPXV_CN Series Solar Fuse	Protection from low and high voltage, unbalance, single-phase, and reverse phase conditions LED diagnostics is quick visual indicator for cause of trip Adjustable trip delay to prevent nuisance tripping DPDT relay output
	SPF_CN Series Solar Fuse	Second set of voltage inputs for monitoring voltage on the load-side of the motor contactor to detect contact failure Keeps history of the past 20 fault causes Wirelessly download and view fault history
	KLKD_CN Series Solar Fuse	600 V ac 15 – 30 A 10x38 mm size for solar combiner boxes, inverters, and circuits with dc fault currents up to 50,000 A Offers fast, reliable short-circuit response Provides backup overcurrent protection to supplement primary branch-circuit fuse or breaker Available in standard and board-mount configurations

Additional Solar Information

For more information on all the Littelfuse solar fuse products visit: Solar

Disclaimer Notice – Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications.