The PAC-MKA33/53 have a thermal differential from set point of 1F regardless of which multi-zone outdoor unit generation they are connected to.
Mitsubishi Electric Trane® Branch Box, Specifications: 1/4 in Liquid, 3/8 in Gas, Flared Connection, 208/230 V, 0.15 A, 0.003 W, 60 Hz, 1 ph, For Use With: MXZ Outdoor Units, Steel, Finish: Galvanized, 6-11/16 in H x 17-23/32 in W x 11-1/32 in D
Amperage Rating0.15 A
Connection TypeFlared
Dimensions6-11/16 in H x 17-23/32 in W x 11-1/32 in D