TRANSFER SWITCH EQUIPMENT CATALOG NUMBERING SYSTEM TYPE ORIENTATION LOGIC FRAME SWITCH POLES AMPERES VOLTAGE ENCLOSURE LISTING Manual (600 Vac) (30 – 1000 A) MT = Manual Refer to Page 6 H = Horizontal V = Vertical X = No Logic Molded Case Device FD = 30 – 150 A KD = 150 – 300 A LD = 400 – 600 A MD= 600 – 800 A NB = 800 – 1000 A