Accessory for 3KC3, 3KC6 AUTOTRANSFORMER 400 V to 230 V 400 VA for 40-160 A contains 1 unit Comprehensive accessories for increased flexibility. From bridging bars through auxiliary switches to various drives, fourth poles or contact covers: With a wide range of accessories, the switch disconnectors and transfer switching equipment can be used for a wide variety of requirements and retrofitted at any time.