DC load bank / portable / AC / laboratory

Lab load bank uses 120 VCC, 127 VAC 1- and 3-phase;it has 4 kW specifications. It works in 7 steps of 2.5 % PMAX (2.5 %/2.5 %/5 %/10%/20 %/20%/40 %) with natural-air cooling with protection grid.
Its operating voltage selectable by insulated jumpers on the front panel in various phases like 240 V single phase AC or DC, 240 /400 V 3 phase star coupling and 130 /240 V 3 phase delta coupling. The power connections which include 5 x 4 mm safety sockets, yellow/green 4 mm ground safety socket.