SE Digest 178

Panelboards

Panelboard Series Ratings

Refer to NQ Panelboards

www.se.com/us

Table 9.1 NQ Series Connected Circuit Breaker Ratings (RMS Symmetrical) (cont'd.) Maximum System VoltageAC [9] Maximum Short Circuit Current Rating [10] Square D™ Brand Integral or Remote Main Circuit Breakers and Remote Main Fuses [11][12][13]

Square D™ Brand Branch Circuit Breaker Catalog Designation and Allowable Ampere Ranges Type [14][15][16] 1Pole 2Pole 3Pole QO(B) EPD — — 15–50A QO(B) EPE — — 15–50A

QO(B) VH

— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —

— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —

15–100A 110–150A 15–30A 15–30A 70–225A 15–30A 110-150A 15–30A 15–100A 110–150A 15–30A 15–100A 110–125A 15–50A 15–50A 15–100A 110–150A 15–30A 15–50A 15–50A 15–100A 110–150A 15–30A 15–30A 15–100A 110–125A 15–50A 15–50A 15–100A 110–150A 15–30A 15–50A 15–50A 15–100A 110-150A 15–100A 110-150A 15–30A 15–50A 15–50A 15–100A 110-150A

QOB-VH

LD

QO(B) EPD QO(B) EPE

9 PANELBOARDS

QDL

LA

QO(B) VH

42,000

QOB-VH QO(B)

MG

QO(B) VH QOB-VH QO(B) PL

QG

QO(B)

QOB-VH

EG, FG

QO(B) EPD QO(B) EPE

QO(B)

QOB-VH QO(B) PL QO(B) EPD QO(B) EPE QO(B) VH QO(B) EPD QO(B) EPE QOB-VH

BG,HG, JG

65,000

LG

QO(B)

QOB-VH

EJ

QO(B) EPD QO(B) EPE

QO(B)

QOB-VH QO(B) PL QO(B) EPD QO(B) EPE QO(B) VH QOB-VH QO(B) QOB-VH QO(B) PL QO(B) EPD QO(B) EPE QOB-VH QO(B) VH QO(B) VH QO(B) AFI QO(B)CAFI QO(B)DF QO(B) VH QOB-VH QO(B) AFI QO(B)CAFI QO(B)DF QO(B)GFI QO(B) EPD QO(B) AFI QO(B)CAFI QO(B)DF QO(B) QO(B)

BJ, HJ, JJ

LJ

125,000

HL, JL

200,000

HR, JR

42,000

400 A Max. Class T3 Fuses

15–70A 15–70A 15–20A 15–20A 15–20A 15–70A 15–20A 15–20A 15–20A 15–70A 15–30A 15–30A 15–20A 15–20A 15–20A 15–70A 15–30A 15–30A 15–70A 15–30A 15–30A —

15–125A 15–125A

— — — — — — — — — — — — — — — — — — — — — —

—

400 A Max. Class J Fuses

15–20A

—

65,000

15–125A

150A

—

400 A Max. Class T6 Fuses

15–20A

—

120/240 1P/3W 208Y/120 3P/4W 240/120 3P/4W

15–125A 15–60A 15–60A

100,000

200 A Max. Class T3 Fuses

—

15–20A

—

QO(B)

15–125A 15–60A 15–60A 15–125A 15–60A 15–60A

QO(B)GFI QO(B) EPD

200 A Max. Class T6 or J Fuses

200,000

QO(B)

QO(B)GFI QO(B) EPD QO(B)GFI QO(B)GFI QO(B)GFI QO(B)GFI

400 A Max. Class T3 Fuses

65,000 100,000

400A Max Class J 200A Max Class T3

— — — —

— — — —

15–50A 15–50A 15–50A 15–50A

208Y/120 3P/4W

200 A Max. Class T6 or J Fuses 400 A Max. Class T3 Fuses

200,000

[9] Series Ratings listed at higher system voltages apply to lower system voltages (Example: 240 3P/3W covers 208Y/120 3P/4W). [10] Short Circuit tests are conducted at 100–105% of the maximum rated voltage of the panelboard. [11] Please consult the NQ/NQM Panelboards Information Manual (80043-712-06) for additional information, including series ratings with obsolete circuit breakers. [12] Where LG is shown, LJ and LL can be used.

[13] Unless otherwise noted, main breakers can be applied at the maximum available amperage rating. [14] Suffixes HID, SWD, and SWN may also be applied to the applicable branch circuit breakers shown above. [15] Where QO(B) circuit breakers are shown above, QO(B)H, QO(B)VH, and QH(B) circuit breakers may also be used. [16] Two-pole CAFI circuit breakers cannot be used on 208Y/120V systems.

9-4

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