Method for controlling switching arm switches, in particular for loading accumulation resources, and the corresponding loading device

The method involves controlling closing of predetermined number of switches respectively for associated closure times (tf-A, tf-B, tf-C). Closing of some of the switches is controlled for the associated closure times during each opening of one of the precedingly closed switches, so that a constant number of switches is closed simultaneously. Closing of the switches is controlled by transmission of pulse width modulation control signals, where the control signals are in-phase or phase-shifted. An independent claim is also included for an electric charging device for charging a storage unit.