The outstanding features of this electronic switch-mode mains PSU are its low weight and ultra-compact, low-profile construction. It features a new type of technology which eliminates the use of large, heavy transformers.
The input voltage range of 100 - 240 V AC makes it possible to use the unit in all European countries as well as in the USA and Japan. The mains PSU is a superb choice for powering battery chargers. The stacking system makes it possible to wire multiple mains PSUs in parallel in order to increase the total output power.
The ULTRA DUO PLUS 40 can also be placed on top of the mains PSU and connected directly to it.
The unit can deliver very high currents, and is therefore ideal for high-current charging using the ULTRA DUO PLUS 40 and also the ULTRA DUO PLUS 50. For the ULTRA DUO PLUS 50 a single mains PSU can be employed to provide a charge power of 300W; alternatively two mains PSUs can be wired in parallel for maximum charge power. Two further output sockets are provided for the use of additional consumer units.

Specification