Eaton Cutler-Hammer KP0400D K-Frame Rating Plug, model 4KS400T, is a 400 Amp rating plug for KS and KD type K-frame installations in KP-series equipment. It is designed to work with KP0400D assemblies to establish a 400 A rating in KS and KD configurations within Eaton's Cutler-Hammer product line. This rating plug helps ensure the correct amperage setting in panelboards and switchgear that use KS/KD style rating plugs.
