Switching of resistive loads, including moderate overloads - occasional actuation (DC-21B)
Switching of mixed resistive and inductive loads, including moderate overloads (i.e. shunt motors) - occasional actuation (DC-22B)
Switching of single PV string(s) without reverse and overcurrents (DC-PV1)
Switching of several PV string(s) with reverse and overcurrents (DC-PV2)