Neptune’s Ultima capacitors are engineered for power factor correction in networks with high harmonic current content, withstanding up to 4xIn overload with very low losses (≤0.2 W/KVAR). Three delta-connected elements use special-profile metallization for higher voltage stress tolerance, housed in an aluminium can with resin-oil impregnation. Rated for 440/480/525V+ (on request), -25°C to +70°C, delivering a life expectancy exceeding 200,000 operating hours across 5–25 KVAr+ ratings.