Voltage transformer, 230..400 V, 1×24 V, 250 VA. range of product: Phaseo Optimum – rated power in VA: 250 VA – input voltage: 230 V AC single phase, terminal(s): N-L1, 400 V AC phase to phase, terminal(s): L1-L2 – secondary winding: single – protective cover: without – ambient air temperature for operation: -20…50 °C.