NF Merchandised Main Circuit Breaker Interiors

Refer to NF Panelboards

NF Main Circuit Breaker Interiors - 600Y/347 Vac Max.

NF Main Circuit Breaker Interiors - Use I-Line Panelboard for 3Ø3W Delta applications above 240 Vac

Circuit Breaker Pole Spaces[1] Mains Rating (Amps) Main Circuit Breaker Adapter Kits
Less Circuit Breaker)
Interior Only Catalog Number (Order Branch Circuit Breakers Separately)[1][2]

NEMA 1 Enclosure

Water, Dirt, and Dust Resistant Enclosure Catalog Numbers[3]

Main Breaker Kit ULSE Barrier Kit[4] Main Circuit Breaker Frame Size[5]

Box
20 in. W x 5.75 in. D[6] or 8.75 in. D[7]

Mono-Flat Front [8]

Hinged Front[8]

Type 3R/5/12
20 in. W x 5.75 in. D[9]

Type 3R
26 in. W x 8.75 in. D[10]

Height (In.)

(Single Phase 3-Wire: Factory Assembled Only) Three Phase 4-Wire [11]

15[12] 125 Back-fed Main Breaker[13] EDBS EDB, EGB or EJB

NF418L1

MH26

NC26( )

NC26( )HR

MH26WP

26

NF418L1C

27[12]

NF430L1

MH32

NC32( )

NC32( )HR

MH32WP

32

NF430L1C

18 125

N150MH[5]

HJQLLC HD/HG/HJ/HL/HR

NF418L1

MH38

NC38( )

NC38( )HR

MH38WP

38

NF418L1C

30

NF430L1

MH44

NC44( )

NC44( )HR

MH44WP

44

NF430L1C

42

NF442L1C

MH50

NC50( )

NC50( )HR

MH50WP

50
54[14]

NF454L1C

MH56

NC56( )

NC56( )HR

MH56WP

56
30 250

N250MJ[5]

JD/JG/JJ/JL/JR

NF430L2

MH50

NC50( )

NC50( )HR

MH50WP

50

NF430L2C

42

NF442L2

MH56

NC56( )

NC56( )HR

MH56WP

56

NF442L2C

54

NF454L2

MH62

NC62( )

NC62( )HR

MH62WP

56

NF454L2C

66

NF466L2

MH74

NC74( )

NC74( )HR

MH74WP

74

NF466L2C

30 400

N400M[5]

LALLC LA/LH[15]

NF430L4

MH62

NC62V( )

NC62V( )HR

MH62WP

MH62D9VWP

62

NF430L4C

42

NF442L4

MH68

NC68V( )

NC68V( )HR

MH68WP

MH68D9VWP

68

NF442L4C

54

NF454L4

MH74

NC74V( )

NC74V( )HR

MH74WP

MH74D9VWP

74

NF454L4C

66

NF466L4

MH86

NC86V( )

NC86V( )HR

MH86WP

MH86D9VWP

86

NF466L4C

30 400 / 600

N600MPPL[5]

PPLLC LG/LJ/LL/LR

NF430L6C

MH68D9[7]

NC68V( )3PNF[16]

NC68V( )3PNFHR[16]

Factory Assembled Only 68 / 74
42

NF442L6C

MH74D9[7]

NC74V( )3PNF[16]

NC74V( )3PNFHR[16]

74 / 80
54

NF454L6C

MH80D9[7]

NC80V( )3PNF[16]

NC80V( )3PNFHR[16]

80 / 86
66

NF466L6C

MH86D9[7]

NC86V( )3PNF[16]

NC86V( )3PNFHR[16]

86
  800 Factory Assembled Only[17]

Footnotes

  1. Order EDB, EGB, or EJB branch circuit breakers separately. Maximum allowable branch circuit breaker pair combination is 170 A.
  2. “C” suffix indicates copper bussing.
  3. Wall mounting brackets add 0.4 inches to back of MHxxWP enclosures.
  4. Please select the appropriate Main Circuit Breaker Barrier for UL Service Entrance applications (see US Service Entrance Barriers (required by NFPA 70—National Electrical Code® (NEC®) 2017)).
  5. Select the appropriate PowerPacT main circuit breaker from Section 7.
  6. Nominal interior dimensions, see PBA600 for details.
  7. D9 suffix indicates the 8.75 in. Deep Enclosure required for panelboards with PowerPacT L main circuit breaker or sub-feed circuit breaker. See PBA604 for dimensional details.
  8. Add “F” for flush mount, “S” for surface mount.
  9. Enclosure includes trim kit. NEMA 3R, 5, 12 enclosures must be bottom fed. Nominal interior dimensions, see PBA555 for details.
  10. Vented Type 3R enclosure with three point door. Must be bottom fed. Required for outdoor applications with PowerPacT L main circuit breaker, two sub-feed circuit breakers, or sub-feed circuit breaker with trip current >150A. Interior nominal dimensions, see PBA603WP for details.
  11. NF panelboards without neutral connections may be applied to 3 phase, 4 wire grounded Wye systems, except at the Service Entrance.
  12. Pole spaces shown are available for branch circuits, with spaces deducted for the back fed main circuit breaker.
  13. Back-fed EDB 125 A 3 pole main circuit breaker must be ordered separately and field installed. Maximum breaker rating opposite is 20 A.
  14. Please note that some local building codes limit panelboards to 42 circuits, including those that reference 2005 or earlier version of NFPA 70.
  15. Available for 125 A–400 A applications. Please order short handle circuit breaker (i.e., LAL36400MB).
  16. Three point latch trim front; required for enclosures on panelboards with PowerPacT L Main Circuit Breaker, Switch, or Sub-Feed Circuit Breaker
  17. 800 A interiors with main circuit breaker require 8.75 inch deep, 26 inch wide enclosures.

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