Redundant UPS system 2 power modules, each with 4 kVA, configurable for 4 kVA N+1 Upgradeable to 16 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: 220 kg (incl. batteries) Battery runtime (full load): 8 minutes Battery runtime (half load): 20 minutes . Important: the UPS must be connected by a professional electrician. Required shielding and wire gauge: 1-phase input/1-phase output: 100A, 35 mm² 3-phase input/1-phase output: 1× 100 A/2x 50 A, 1× 35 mm²/2x 10 mm² . Please note that increased delivery costs may apply due to the high weight of the product.