When greater than six branch circuits are required, the NEC requires a main disconnect and overcurrent protection device ahead of the meters. A main breaker module serves as this single point of disconnect and overcurrent protection. A main breaker module consists of a pull section to house the lugs for connecting to the utility feed and the main breaker. A main breaker module does not provide the option for compression lugs and thus, when the utility specifies compression lugs, a separate pull box is required.

GE MeterMod™III Main Breaker Module, 3-Wire Bottom Feed, 120/240 VAC, 800 A, 1 ph, SKH800 Frame, 65 kA Interrupt, 2 Pole, 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_TMPSB8R_Specification_Sheet.pdf https://www.iesbuy.com//ASSETS/DOCUMENTS/ITEMS/EN/https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/GE_TMPSB8R_Specification_Sheet.pdf

• 1-ph mains have a neutral, A-phase, B-phase, ground 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 main breaker is greater than horizontal bus amps