Interpact INSINV - Source changeover switches 40 A to 2500 A. Source changeover switch produced around 2 Interpact INSINV. Manual changeover switches by interlocking of operating mechanisms via rotary handles or with captive keys. Possible complete source changeover assembly for Interpact INS250-100 A to INS630A. Wide range of auxiliaries and accessories common to the Interpact range.