Cut Sheet

Volume 1—Residential and Light Commercial CA08100002E—August 2015 www.eaton.com V1-T4-109
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4.10
Metering Products
Group Metering
Main Circuit Breaker with Busway Connection
Verify proper left/right–bus/main phasing.
Note: “Right” means that the bus duct is to the right of the main and
“left” means that the bus duct is to the left of the main. (See Dimension/
Layout section for clarification.)
Main Circuit Breaker with Busway Connection
Ampere
Rating Feed
System Voltage
120/208 Vac
Three-Phase, Four-Wire
Catalog Number
Internal
Ground or
Housing
Ground
Standard T
or TO
Opposite
Phasing
Right
or Left
Side
400 Bottom
3MFS400BCRGTO
Internal TO Right
600 Bottom
3MFS600BCRGTO
Internal TO Right
800 Bottom
3MFS800BCRGTO
Internal TO Right
400 Bottom
3MFS400BCLGTO
Internal TO Left
600 Bottom
3MFS600BCLGTO
Internal TO Left
800 Bottom
3MFS800BCLGTO
Internal TO Left
400 Bottom
3MFS400BCRGT
Internal T Right
600 Bottom
3MFS600BCRGT
Internal T Right
800 Bottom
3MFS800BCRGT
Internal T Right
400 Bottom
3MFS400BCLGT
Internal T Left
600 Bottom
3MFS600BCLGT
Internal T Left
800 Bottom
3MFS800BCLGT
Internal T Left
400 Bottom
3MFS400BCRNTO
Housing TO Right
600 Bottom
3MFS600BCRNTO
Housing TO Right
800 Bottom
3MFS800BCRNTO
Housing TO Right
400 Bottom
3MFS400BCLNTO
Housing TO Left
600 Bottom
3MFS600BCLNTO
Housing TO Left
800 Bottom
3MFS800BCLNTO
Housing TO Left
400 Bottom
3MFS400BCRNT
Housing T Right
600 Bottom
3MFS600BCRNT
Housing T Right
800 Bottom
3MFS800BCRNT
Housing T Right
400 Bottom
3MFS400BCLNT
Housing T Left
600 Bottom
3MFS600BCLNT
Housing T Left
800 Bottom
3MFS800BCLNT
Housing T Left
400 Bottom
3MCB400BCRGT
Internal T Right
400 Bottom
3HMCB400BCRGT
Internal T Right
600 Bottom
3MCB600BCRGT
Internal T Right
600 Bottom
3HMCB600BCRGT
Internal T Right
800 Bottom
3MCB800BCRGT
Internal T Right
800 Bottom
3HMCB800BCRGT
Internal T Right
1000 Bottom
3MCB1000BCRGT
Internal T Right
1000 Bottom
3HMCB1000BCRGT
Internal T Right
1200 Bottom
3MCB1200BCRGT
Internal T Right
1200 Bottom
3HMCB1200BCRGT
Internal T Right
400 Bottom
3MCB400BCLGT
Internal T Left
400 Bottom
3HMCB400BCLGT
Internal T Left
600 Bottom
3MCB600BCLGT
Internal T Left
600 Bottom
3HMCB600BCLGT
Internal T Left
800 Bottom
3MCB800BCLGT
Internal T Left
800 Bottom
3HMCB800BCLGT
Internal T Left
1000 Bottom
3MCB1000BCLGT
Internal T Left
1000 Bottom
3HMCB1000BCLGT
Internal T Left
1200 Bottom
3MCB1200BCLGT
Internal T Left
1200 Bottom
3HMCB1200BCLGT
Internal T Left
400 Bottom
3MCB400BCRNT
Housing T Right
400 Bottom
3HMCB400BCRNT
Housing T Right
600 Bottom
3MCB600BCRNT
Housing T Right
600 Bottom
3HMCB600BCRNT
Housing T Right
800 Bottom
3MCB800BCRNT
Housing T Right
800 Bottom
3HMCB800BCRNT
Housing T Right
1000 Bottom
3MBC1000BCRNT
Housing T Right
1000 Bottom
3HMBC1000BCRNT
Housing T Right
Using this information, select the correct main device catalog
number per the selection chart.
Main Circuit Breaker with Busway Connection, continued
Ampere
Rating Feed
System Voltage
120/208 Vac
Three-Phase, Four-Wire
Catalog Number
Internal
Ground or
Housing
Ground
Standard T
or TO
Opposite
Phasing
Right
or Left
Side
1200 Bottom
3MCB1200BCRNT
Housing T Right
1200 Bottom
3HMCB1200BCRNT
Housing T Right
400 Bottom
3MCB400BCLNT
Housing T Left
400 Bottom
3HMCB400BCLNT
Housing T Left
600 Bottom
3MCB600BCLNT
Housing T Left
600 Bottom
3HMCB600BCLNT
Housing T Left
800 Bottom
3MCB800BCLNT
Housing T Left
800 Bottom
3HMCB800BCLNT
Housing T Left
1000 Bottom
3MCB1000BCLNT
Housing T Left
1000 Bottom
3HMCB1000BCLNT
Housing T Left
1200 Bottom
3MCB1200BCLNT
Housing T Left
1200 Bottom
3HMCB1200BCLNT
Housing T Left
400 Bottom
3MCB400BCRGTO
Internal TO Right
400 Bottom
3HMCB400BCRGTO
Internal TO Right
600 Bottom
3MCB600BCRGTO
Internal TO Right
600 Bottom
3HMCB600BCRGTO
Internal TO Right
800 Bottom
3MCB800BCRGTO
Internal TO Right
800 Bottom
3HMCB800BCRGTO
Internal TO Right
1000 Bottom
3MCB1000BCRGTO
Internal TO Right
1000 Bottom
3HMCB1000BCRGTO
Internal TO Right
1200 Bottom
3MCB1200BCRGTO
Internal TO Right
1200 Bottom
3HMCB1200BCRGTO
Internal TO Right
400 Bottom
3MCB400BCLGTO
Internal TO Left
400 Bottom
3HMCB400BCLGTO
Internal TO Left
600 Bottom
3MCB600BCLGTO
Internal TO Left
600 Bottom
3HMCB600BCLGTO
Internal TO Left
800 Bottom
3MCB800BCLGTO
Internal TO Left
800 Bottom
3HMCB800BCLGTO
Internal TO Left
1000 Bottom
3MCB1000BCLGTO
Internal TO Left
1000 Bottom
3HMCB1000BCLGTO
Internal TO Left
1200 Bottom
3MCB1200BCLGTO
Internal TO Left
1200 Bottom
3HMCB1200BCLGTO
Internal TO Left
400 Bottom
3MCB400BCRNTO
Housing TO Right
400 Bottom
3HMCB400BCRNTO
Housing TO Right
600 Bottom
3MCB600BCRNTO
Housing TO Right
600 Bottom
3HMCB600BCRNTO
Housing TO Right
800 Bottom
3MCB800BCRNTO
Housing TO Right
800 Bottom
3HMCB800BCRNTO
Housing TO Right
1000 Bottom
3MCB1000BCRNTO
Housing TO Right
1000 Bottom
3HMCB1000BCRNTO
Housing TO Right
1200 Bottom
3MCB1200BCRNTO
Housing TO Right
1200 Bottom
3HMCB1200BCRNTO
Housing TO Right
400 Bottom
3MCB400BCLNTO
Housing TO Left
400 Bottom
3HMCB400BCLNTO
Housing TO Left
600 Bottom
3MCB600BCLNTO
Housing TO Left
600 Bottom
3HMCB600BCLNTO
Housing TO Left
800 Bottom
3HMCB800BCLNTO
Housing TO Left
800 Bottom
3HMCB800BCLNTO
Housing TO Left
1000 Bottom
3MCB1000BCLNTO
Housing TO Left
1000 Bottom
3HMCB1000BCLNTO
Housing TO Left
1200 Bottom
3MCB1200BCLNTO
Housing TO Left
1200 Bottom
3HMCB1200BCLNTO
Housing TO Left