MHL36600, Square D, MHL Series, type MHL, 3P, 3PH, 600A, 600V, 65kA@480V, high interrupting capacity, feed-thru, complete with non-interchangeable trip LI - Long-Time and Instantaneous trip functions and line & load side lug terminals, non-interchangeable thermal magnetic trip unit with adjustable magnetic setting low-high. complete with MA11021- 120V shunt trip, MA11284- 2A/2B auxiliary switch