About This Item

This is a Siemens vacuum contactor assembly carrying part number 14-193-100-563 (also marked 16478-017L). Rated 1000 amps DC with a 74VDC coil. The K6 interlock assembly (P/N 14-192-890-513) is still attached. The Siemens part number structure here is consistent with vacuum contactor assemblies used in oilfield SCR drive packages built by Siemens for drilling rig installations.

Vacuum contactors in this rating and coil voltage configuration are used for main power switching in SCR drive systems where arc suppression without replaceable arc chutes is preferred. The K6 interlock is a mechanical interlock assembly that typically prevents simultaneous engagement of contactors in a drive system. Having both the contactor and the interlock together is notable: these are often sourced separately and finding a matched set from surplus is less common. Condition will be disclosed in writing with the quote.