Section 9: Panelboards PDF

Section 9: Panelboards PDF

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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 UL Service Entrance 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][8]

Mono-Flat™ Front [9]

Hinged Front[9]

Type 3R/5/12
20 in. W x 5.75 in. D[10]

Vented Type 3R
26 in. W x 8.75 in. D[11]

Height (In.)

(Single Phase 3-Wire: Factory Assembled Only) Three Phase 4-Wire [12]
15[13] 15–125 Back-fed Main Breaker[14]

NFEDBS

 EDB, EGB or EJB

NF418L1

MH26, MH26BE

NC26( )

NC26( )HR

MH26WP

 — 26

NF418L1C
27[13]

NF430L1

MH32, MH32BE

NC32( )

NC32( )HR

MH32WP

 — 32

NF430L1C
18 15–125

N150MH[5]

NFHJLLC

 HD/HG/HJ/HL/HR

NF418L1

MH38, MH38BE

NC38( )

NC38( )HR

MH38WP

 — 38

NF418L1C
30

NF430L1

MH44, MH44BE

NC44( )

NC44( )HR

MH44WP

 — 44

NF430L1C
42

NF442L1C

MH50, MH50BE

NC50( )

NC50( )HR

MH50WP

 — 50
54[15]

NF454L1C

MH56, MH56BE

NC56( )

NC56( )HR

MH56WP

 — 56
30 125–250

N250MJ[5]

 JD/JG/JJ/JL/JR

NF430L2

MH50, MH50BE

NC50( )

NC50( )HR

MH50WP

 — 50

NF430L2C
42

NF442L2

MH56, MH56BE

NC56( )

NC56( )HR

MH56WP

 — 56

NF442L2C
54

NF454L2

MH62, MH62BE

NC62( )

NC62( )HR

MH62WP

 — 56

NF454L2C
66

NF466L2

MH74, MH74BE

NC74( )

NC74( )HR

MH74WP

 — 74

NF466L2C
30 125–400

N400M[5]

NFLALLC

 LA/LH[16]

NF430L4

MH62, MH62BE

NC62V( )

NC62V( )HR

MH62WP

MH62D9VWP

 62

NF430L4C
42

NF442L4

MH68, MH68BE

NC68V( )

NC68V( )HR

MH68WP

MH68D9VWP

 68

NF442L4C
54

NF454L4

MH74, MH74BE

NC74V( )

NC74V( )HR

MH74WP

MH74D9VWP

 74

NF454L4C
66

NF466L4

MH86, MH86BE

NC86V( )

NC86V( )HR

MH86WP

MH86D9VWP

 86

NF466L4C
30 125–600

N600MPPL[5]

NFPPLLLC

 LG/LJ/LL/LR

NF430L6C

MH68D9

NC68V( )3PNF[17]

NC68V( )3PNFHR[17]

 — Factory Assembled Only 68
42

NF442L6C

MH74D9

NC74V( )3PNF[17]

NC74V( )3PNFHR[17]

 — 74
54

NF454L6C

MH80D9

NC80V( )3PNF[17]

NC80V( )3PNFHR[17]

 — 80
  600–800 Factory Assembled Only[18]

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 ).
  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. If Blank End Walls are desired at both ends of 5.75" deep NEMA 1 Enclosure, select catalog number with “BE” suffix. Both end walls are blank in 8.75" deep enclosures.
  9. Add “F” for flush mount, “S” for surface mount.
  10. Enclosure includes trim kit. NEMA 3R, 5, 12 enclosures must be bottom fed. Nominal interior dimensions, see PBA555 for details.
  11. 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.
  12. NF panelboards without neutral connections may be applied to 3 phase, 4 wire grounded Wye systems, except at the Service Entrance.
  13. Pole spaces shown are available for branch circuits, with spaces deducted for the back fed main circuit breaker.
  14. Back-fed EDB 125 A 3 pole main circuit breaker must be ordered separately and field installed. Maximum breaker rating opposite is 20 A.
  15. Please note that some local building codes limit panelboards to 42 circuits, including those that reference 2005 or earlier version of NFPA 70.
  16. Available for 125 A–400 A applications. Please order short handle circuit breaker (i.e., LAL36400MB).
  17. Three point latch trim front; required for enclosures on panelboards with PowerPacT L Main Circuit Breaker, Switch, or Sub-Feed Circuit Breaker
  18. 800 A interiors with main circuit breaker require 8.75 inch deep, 26 inch wide enclosures.
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