Redundant UPS system 1× power module with 4 kVA, scalable to 8 kVA N+1 Input: 1 or 3-phase hardwire Output: 1-phase hardwire (3-wire) Incl. AP9631 network management card Extendable running time Net weight: 156 kg (incl. batteries) Battery runtime (full load): 6 minutes Battery runtime (half load): 15 minutes . Important: the UPS must be connected by a professional electrician. Required shielding and wire gauge: 1-phase input/1-phase output: 50 A, 10 mm² 3-phase input/1-phase output: 1× 50 A/2× 25 A, 1× 10 mm²/2× 4 mm² . Please note that increased delivery costs may apply due to the high weight of the product.