Why this FAQ?
Engineers asked for a concise, spec-true reference to select and install a 1500 Vdc, 3L PV fuse. This summarizes ratings, approvals, fitment, and buying info without fluff.
What is the Eaton Bussmann PV-315A-3L-15 and typical applications?
A gPV high-speed fuse-link for photovoltaic DC protection, rated 315 A at up to 1500 Vdc in the 3L form factor. It protects PV strings, combiners, DC disconnects, and inverter DC inputs from overloads and short-circuit faults. Use in 1500 Vdc PV arrays; not intended for AC circuits.
What are the key electrical ratings and performance?
Rated current 315 A; voltage 1500 Vdc; interrupting rating 100 kA (verify test conditions in datasheet). Fuse class gPV (full-range PV protection) with high-speed characteristics. Typical power loss 52 W (at rated current). For time-current and I²t data, refer datasheet / contact Shansen.
Which standards and certifications does it meet?
Compliances include IEC 60269 (gPV), UL Listed, CSA Certified, CE Marked, and RoHS compliant. Use these approvals for project documentation and AHJ submissions. If a specific clause/part is required, refer datasheet / contact Shansen for confirmation.
What are the physical details and connections?
3L blade-type fuse-link with ceramic body, white color, with indicator window. Weight approx. 2035 g. Dimensions are listed as 75×91×205 mm and also (L×W×H) 217×94×82 mm—refer datasheet for exact outline per variant. Blade connections mate with 3L fuse bases.
Which fuse holder/base is compatible?
Use with SD3L-S-PV XL 3L fuse base (or equivalent 3L, 1500 Vdc-rated holder). Ensure the base’s voltage, creepage/clearance, and terminal ratings meet 1500 Vdc/315 A and local standards. Check terminal hardware/torque in the base datasheet.
What does the built-in indicator do?
The visual indicator shows fuse-open status to aid maintenance. For remote signaling, check if the chosen 3L base supports microswitch accessories. Confirm indicator visibility/orientation in the panel layout.
How should I size and coordinate this fuse in a PV system?
Select ampere rating based on array Isc and expected operating/current-imbalance per IEC gPV guidance; verify time-current curves for clearing times. Check I²t let-through for coordination with DC contactors, busbars, and semiconductor devices. Apply ambient/temperature and enclosure derating from the manufacturer curves.
Any installation and safety notes?
De-energize and LOTO the DC circuit before replacement; use DC-rated PPE and arc-flash precautions. Mount in a 1500 Vdc-rated 3L base; tighten to specified torque; ensure ventilation and spacing. Observe polarity/clearances and re-verify insulation resistance after installation.
How do I order and verify the correct part in India?
Order by catalog number PV-315A-3L-15 (EAN 5996516001165, UPC 051712372169). Shansen Enterprises (authorized channel partner) serves Tamil Nadu with pan-India delivery and quick WhatsApp quotes. For stock, lead time, and any spec confirmation, contact Shansen.
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