NF Main/Sub-Feed Breakers and Kits
View Digest 178, Section 7 and PowerPact H, J, L or LA, LH, Q4 catalogs for more information on the molded case circuit breakers qualified for use as main or sub-feed circuit breakers in NF Panelboards.
Ready to install (RTI) kits are available to simplify the addition of a main circuit breaker or sub-feed circuit breaker to most main lug NF panelboards with main lugs only.
Main Circuit Breakers and Kits
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RTI to 400 A (LA/LH frame)
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Branch mounted to 125 A (ExB)
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Electronic trip to 250 A (H, J Frame)
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Factory assembled (FA) to 600 A
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Electronic trip available (PowerPact H, J, L frame)
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Sub-feed Circuit Breakers and Kits
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Single Sub-Feed Circuit Breaker (SFB)
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Two SFB (to 250 A) only for 400 A
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Factory assembled only for 600 A
NF Main and Sub-Feed Circuit Breaker Kits Part Numbering
NF | 400 | SFB | H | |
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H, or J = Circuit breaker frame | ||||
Blank =
Main circuit breaker SFB = Sub-feed circuit breaker |
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Ampacity rating: 150, 250, 400, 600 | ||||
N = Main circuit breaker kit NF = Sub-Feed Circuit Breaker kit |