Switches electrical consumers with 2, 4, 8 or 12 independent potential-free contacts via ABB i-bus®. Manual operation of the contact is possible for each output. The switching state of the contact is displayed. The 16/20A, 16A-AC3, C load series is particularly suitable for switching loads with high inrush current peaks such as lamps with compensation capacitors or fluorescent lamp loads in accordance with DIN EN 60669.