Sol-Ark, 60K Battery or Battery-Less Inverter, 60,000 Watt 3 Phase 277/ 480Vac, 50/60Hz,1,000Vdc max, Battery 600Vdc Nominal, Transformerless Sinewave,Grid Tie/Off-Grid, AC and/or DC Coupled, 4 MPPT PV inputs, with AFCI/GFDI, & Dual AC inputs,10 Yr. Warr, NEMA 3R , 60K-3P-480V-NEasy Install The 60K INVERTER comes with everything you need to install it. Nicely packaged for added efficiencyAC/DC Coupling Supports simultaneous DC and AC coupling. Boosts PV energy without increasing PV array size and reduces storage inverter costs up to 30%Fleet Management With Sol-Ark’s remote access features and app you are never out of touch to quickly repair or adjust any system without being on siteWarranty and Reliability Comes with our award winning iron clad 10 year warranty and our 7 day a week live support to assist you in all your needs