CA10 A213-620E 4 pole 4 stage rotary switch by Kraus & Naimer. actual switch pictured ( knob may be rounded version.) ratings :16A @ 380V 12A@660V 3 x 380 / 440 V AC ( please check with datasheet) download Kraus & Naimer CA10 A213-620 datasheet: with specific info for this switch on .pdf page 7. download Kraus & Naimer CA10 A213-620 datasheet: with additional info.