KACO new energy uses combiner boxes to support you with very flexible system design. First and foremost, DC combiners enable the "Virtual Central" concept:In ground-mounted solar power plants, the inverters are installed at a central location, while the DC combiners are spread across the PV module array. This leads to short cable runs between the inverters and the transformer and means that there is only minimal loss of power on the AC side: The high efficiency of our inverters can be deployed to its fullest. In commercial and industrial PV systems, this kind of design makes it possible to avoid AC lines on the roofs.- Designed for a DC system voltage up to 1 500 V - Direct connection of DC strings - String monitoring (optional) - Protection rating IP65 - IEC 61439-2 compliant planning and construction - Surge protection device type I + II - Flexible number of DC inputs - Fuse protection on plus and minus side 15 A / 20 A /25 A / 30 AAmbient temperatures: Indoor: - 5° C to max. + 40°C (+ 35°C 24h average) Outdoor: - 25° C to max. + 40° C (+ 35° C 24h average)Relative humidity: Indoor: Max. 50% at +40°C, max. 90% at +20°C (not condensating) Outdoor: Temporary 95% at +25°C (not condensating)Altitude above sea level. Max. 2000m Permanent permissible load: 70 kg vertical and horizontal position