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)
15–70A 15–30A 15–30A 15–20A 15–20A 15–20A 15–70A 15–30A 15–30A 15–30A 15–20A 15–20A 15–20A 15–70A — 15–20A 15–20A 15–20A 15–70A 15–30A 15–30A 15–30A 15–20A 15–20A 15–20A 15–70A 15–30A 15–30A 15–20A 15–20A 15–20A — — — —
15–125A 15–60A 15–60A
— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
QO(B)GFI QO(B) EPD QO(B)AFI QO(B)CAFI
EJ
—
15–20A
QO(B)DF
—
QO(B)
15–125A
QOB-VH QO(B) PL QO(B)GFI QO(B) EPD QO(B)AFI QO(B)CAFI
150A
15–60A 15–60A 15–60A
BJ,HJ, JJ
—
15–20A
QO(B)DF
—
QO(B)
15–125A
QOB-VH
150A
QO(B)GFI QO(B) EPD QO(B)AFI QO(B)CAFI
15–60A 15–60A
9 PANELBOARDS
LJ
—
15–20A
QO(B)DF
—
QO(B)
15–125A
QOB-VH QO(B) PL QO(B)GFI QO(B) EPD QO(B)AFI QO(B)CAFI
150A
15–60A 15–60A 15–60A
125,000
HL, JL
—
15–20A
QO(B)DF
—
QO(B)
15–125A 15–60A 15–60A
QO(B)GFI QO(B) EPD QO(B)AFI QO(B)CAFI
200,000
HR, JR
—
15–20A
QO(B)DF QO(B)H
—
25,000 42,000 65,000 100,000 125,000 18,000 22,000
QD, BD, HD, JD, LD
— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
15–100A 70–225A 15–100A 15–100A 15–100A
QDL
LA
QO(B)H QO(B)H QO(B)H
QG, BG, HG, JG, LG
2401P/2W
BJ, HJ, JJ, LJ
HL, JL LA/LH
QO(B)
— — — — — — — — — — — — — — — — — — — — — — — — — — — — —
15–30A 15–50A 15–50A 15–30A 15–50A 15–30A 15–30A 15–100A 110–150A 15–30A 15–50A 15–50A 15–50A 15–50A 15–100A 15–50A 15–50A 15–30A 15–100A 110–150A 15–30A 15–50A 15–50A 15–100A 15–50A 15–50A 15–100A 110–150A
QO (B) VH, QOB-VH QD, ED, BD, HD, JD
QO(B)GFI QO(B)GFI QO(B)GFI QO(B)GFI QO(B)GFI QOB-VH QO(B) PL QO(B)GFI QO(B) EPD QO(B) EPE QO(B)GFI QO(B) QO(B) VH
25,000
LD
QG, EG, BG, HG, JG
65,000
LG
208Y/120 3P/4W
QJ
100,000
EJ, BJ, HJ, JJ
QO(B)
QO(B) VH
QO(B) EPD QO(B) EPE
22,000
QO(B)
QO(B) VH QOB-VH QO(B) PL QO(B) EPD QO(B) EPE
QD
240/120 3P/4W 2403P/3W
25,000
QO(B)
QO(B) EPD QO(B) EPE
ED
QO(B)
QO(B) VH QO(B) PL
BD,HD, JD
15–30A
[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.
9-3
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