Confirmed Gap-Fill (was missing from both prior files) - Adjustable, Not UL Listed
Eaton Series C K-Frame KT3400TA Adjustable Trip Unit 400A 3P
The Eaton KT3400TA is a 3-pole, 400A adjustable-thermal trip unit for Series C K-Frame breakers. Adjustable thermal range 315 - 400A. Not UL listed (special calibration).