Square D Digest 179

NQ Panelboards—240 Vac, 48 Vdc

NQ Merchandised Main Circuit Breaker Interiors

Online Refer to NQ Panelboards

www.se.com/us

NQ 14-inch-wide—240 Vac, 48 Vdc [58] Features

14-inch-wide NQ panelboards are available for those customers whose equipment space is limited. Developed with customer input, Square D™ brand NQ panelboards are built to last, featuring innovations for ease of installation and durability. • 240 Vac, 48 Vdc maximum • 225 A maximum main circuit breaker or main lugs • 100 A maximum branch circuit breakers • Interiors accept bolt-on and plug-on branch circuit breakers • Three-phase, four-wire, and single-phase, three-wire interiors available • Panelboards available with Mono-Flat™ front • May be suitable for use as service entrance equipment with neutral bonding kit and main circuit breaker barrier installed • Branch circuit filler plates provide fast and easy installation • Both fully and series-rated systems are available Table 9.5: Main Lug Interiors—Accepts Plug-On and Bolt-On Branch Breakers • Visi-Trip ™ indication on branch circuit breakers • 10,000–65,000 A Short Circuit Current Rating (SCCR) • Interiors supplied with silver flashed copper bus as standard

9 PANELBOARDS

Interior Only (Order Branch Circuit Breakers Seperately)

NEMA Type 1 Enclosure

Main Ratings

Max. Number of Breakers

Box 14 in. W x 5.75 in.Db

MonoFlat Front

14–inch wide NQ Panelboard Main Lug

Hinged Front

Cat. No. [59]

Cat. No.

Cat. No.

Cat.No.

14-inch-wide Cabinet—Single Phase 3-Wire 18 100A

NQC32 ( ) NQC32 ( ) NQC32 ( ) NQC38 ( ) NQC32 ( ) NQC32 ( ) NQC32 ( ) NQC38 ( )

NQ18L1C14 NQ30L1C14 NQ30L2C14 NQ42L2C14 NQ418L1C14 NQ430L1C14 NQ430L2C14 NQ442L2C14

NQB532 NQB532 NQB532 NQB538 NQB532 NQB532 NQB532 NQB538

N/A N/A N/A N/A N/A N/A N/A

30 30 42

225A

14-inch-wide Cabinet—Three Phase 4-Wire 18 100A

30 30 42

225A

N/A Table 9.6: Main Circuit Breaker Interiors—Accepts Plug-On and Bolt-On Branch Breakers

NEMA Type 1 Enclosure

Interior Only (Order Branch Circuit Breakers Seperately)

Main Circuit Breaker Panelboard

Max. Number of Break ers

Box14 in.Wx 5.75 in. Db Cat. No. [61]

Main Circuit Breaker Kit [60]

Main Rat ings

ULSE Barri erKit

MonoFlat Front

Hinged Front

Main Circuit Breaker Frame

Cat. No. [59]

Cat. No.

Cat. No.

14-inch-wide Cabinet—Single Phase 3-Wire 16 [62] 100 NQ18L1C14

NQB532 NQC32 ( ) NQB532 NQC32 ( ) NQB544 NQC44 ( )

N/A N/A N/A

— — Select QOB 2 pole or QOB-VH [60] — —

28 [62]

NQ30L1C14

HD, HG,HJ, HL, HR JD, JG, JJ, JL, QB , QD, QG,QJ

NQ30L2C14 NQMB2H J14 or NQMB2Q14 NQ42L2C14

30

HJQL LC

225

NQB550 NQC50 ( )

N/A

42

14-inch-wide Cabinet—Three Phase 4-Wire 15 [62] 100 NQ418L1 C14

Main Lug Panelboard

NQB532 NQC32 ( )

N/A

— — Select QOB 3 pole or QOB-VH [60] — —

NQ430L1 C14 NQ430L2 C14 NQ442L2 C14

27 [62]

NQB532 NQC32 ( )

N/A

HD, HG,HJ, HL, HR JD, JG, JJ, JL, QB , QD, QG,QJ

NQMB2H J14 or NQMB2Q14

NQB544 NQC44 ( )

30

N/A

HJQL LC

225

NQB550 NQC50 ( )

N/A

42

Table 9.7: NQ Accessories Available on NQ 14” Panelboards Description

Catalog No.

Equipment Ground Bars Aluminum (twenty seven terminations #14 to #4 AWG)

PK27GTA PK23GTAL PK27GTACU

PK23GTA+ #1 to #4/0 AWG Al or Cu lug

Copper (twenty seven terminations #14 to #4 AWG)

Ground Bar Insulator Kit

PKGTAB

Handle Attachments—Branch Circuit Breakers Handle lock-off

HLO1

Handle tie - (QO and QOB only) Handle padlock attachment—1-pole

QO1HT QO1PA QO1PL QO3HT

2- and 3-pole

Handle tie and lock-off for three 1-pole (QO, QOB)

Other Accessories Filler plates (15 per package)

NQFP15

[58] DC voltage applications require installation of DC rated QO(B) circuit breakers. [59] Add “F” for flush mount, “S” for surface mount. [60] Select a Q or H frame circuit breaker, HJQLLC barrier (and associated main circuit breaker kit) from the list for 225 interiors, for panels to be "Suitable for use as UL service equipment." [61] All 14 in. W boxes come with blank endwalls. [62] Pole spaces shown are available for branch circuits, with spaces deducted for the back-fed main circuit breaker.

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