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QO® Miniature Circuit Breakers

QO® Plug-On Circuit Breakers

Class 730, 731, 733 / Refer to Catalog: 0730CT9801

Square D brand QO® miniature circuit breakers are plug-on products for use in QO load centers, NQOD panelboards, NQOD OEM interiors or Speed‑D® switchboard distribution panels. Bolt-on QOB circuit breakers are for use in NQOD panelboards or interiors.a

The Square D exclusive Qwik-Open® mechanism, with a trip reaction within 1/60th of a second, is standard on all 1P 15A and 20 A circuit breakers.

 

	Table 1.1: Plug-On Circuit Breakers										Table 1.2: QO/QOB Ring Terminal (20% $ Price Adder)—Factory Installed Only
	Amperes Rating b	1P—120/240 Vac		2P—120/240 Vac Common Trip		2P—240 Vac c Common Trip		3P—240 Vac Common Trip
											Ampere Rating	Poles	Suffix
		Cat. No.	$ Price	Cat. No.	$ Price	Cat. No.	$ Price	Cat. No.	$ Price
	10 k AIR										10–30 A	1, 2, 3	5237
	10 A	QO110	19.40	QO210	44.70	—	—	QO310	165.00		35–60 A	1,2	5238
	15 A	QO115 de	19.40	QO215d	44.70	QO215H	133.00	QO315d	165.00		35–50 A	3
	20 A	QO120 de	19.40	QO220 d	44.70	QO220H	133.00	QO320d	165.00		70–110 A	2	5273
	25 A	QO125 d	19.40	QO225d	44.70	QO225H	133.00	QO325d	165.00		60–100 A	3
	30 A	QO130 d	19.40	QO230d	44.70	QO230H	133.00	QO330d	165.00
	35 A	QO135 d	19.40	QO235d	44.70	—	—	QO335d	165.00		Table 1.3: Wire Sizesb
	40 A	QO140 d	19.40	QO240 d	44.70	QO240H	133.00	QO340d	165.00		Circuit Breaker Type	Ampere Rating	Wire Size (AWG/kcmil)
	45 A	QO145 d	19.40	QO245d	44.70	—	—	QO345d	165.00
	50 A	QO150 d	19.40	QO250d	44.70	QO250H	133.00	QO350d	165.00		QO 1P	10–30 A	14–8 Al/Cu
	60 A	QO160 d	19.40	QO260d	44.70	QO260H	133.00	QO360d	165.00			10–30 A	(2) 14–10 Cu
	70 A	QO170 d	44.70	QO270d	89.00	QO270H	149.00	QO370d	210.00			35–70 A	8–2 Al/Cu
	80 A	—	—	QO280d	126.00	QO280H	210.00	QO380d	244.00		QO 2P	10–30 A	14–8 Al/Cu
	90 A	—	—	QO290d	126.00	QO290H	210.00	QO390d	244.00			10–30 A	(2) 14–10 Cu
	100 A	—	—	QO2100d	126.00	QO2100H	210.00	QO3100d	244.00			35–70 A	8–2 Al/Cu
	110 A	—	—	QO2110d	285.00	—	—	—	—			80–125 A	4–2/0 Al/Cu
	125 A	—	—	QO2125d