QO® (plug-on) and QOB (bolt-on) one-, two- and three-pole thermal-magnetic circuit breakers provide overcurrent protection and switching on ac and dc systems. Plug-on QO circuit breakers are for use in QO load centers, NQ and NQOD panelboards, OEM mounting bases, and Speed-D® switchboard distribution panels. Bolt-on QOB circuit breakers are for use in NQO and NQOD panelboards.
QO and QOB circuit breakers have an overcenter, trip-free toggle mechanism with quick-make, quickbreak action and positive handle indication. The tripping mechanisms in two-and three-pole circuit breakers operate such that an overcurrent on any pole of the circuit breaker will cause all poles of the circuit breaker to open simultaneously. Each pole has an individual thermal-magnetic trip element calibrated for 40°C ambient temperature.
SPECIFICATIONS:
Range: QO
Line Rated Current: 20A
System Voltage:
120 VAC
120/240 VAC
48 VDC
Mounting Type: Plug-In
No. of Poles: 1
Circuit Breaker Type: Standard
Ratings: HACR and Switching Duty rated
Electrical Connection: Pressure Plate
Interrupt Rating:
5 kA at: 48 VDC
10 kA at: 120/240 VAC 50/60 Hz
10 kA at: 120 VAC 50/60 Hz
Wire Size: AWG 14...AWG 8 (copper or aluminium)
Height: 3 in
Depth: 2.91 in
Width: 0.75 in
QO120 CIRCUIT BREAKER DATASHEET
CIRCUIT BREAKER CATALOG
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