When greater than six branch circuits are required, the NEC requires a main disconnect and overcurrent protection device ahead of the meters. A fusible main switch module serves as this single point of disconnect and overcurrent protection. A fusible main switch module consists of a pull section to house the lugs for connecting to the utility feed and the main switch. A compression lug landing kit is included with each main switch module.

GE Meter Mod III Main Fusible Switch Module, 120/240 VAC, 600 A, 1 ph, 3 Wires, 2 AWG to 600 kcmil Wire, Top Feed, Class T Fuse, Load Connection, NEMA 3R Enclosure, 20 in W x 11.7 in D x 47.6 in H Dimensions

• https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/GE_TMPFT6R_Specification_Sheet.pdf https://www.iesbuy.com//ASSETS/DOCUMENTS/ITEMS/EN/https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/GE_TMPFT6R_Specification_Sheet.pdf

• 1 ph mains have a neutral, A-phase, B-phase group and may be connected to 3-ph horizontal bus stacks, however, output is only 1 ph
• All mains are required to be center feed only when the main fusible switch rating is greater than the horizontal bus amperage rating
• (2) 2 AWG to 600 kcmil copper/aluminum phase/neutral main wire size