Square D QO140

Square D

Circuit Breaker, 40 A

QO140 147307
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$14.65+ 3 Business Day Shipping $7.15


ItemCircuit Breaker
TypePanelboard Mount
Circuit Breaker TypeStandard
Number of Poles1
Voltage120/240 VAC
Max. DC Voltage (V)48
AIR Rating10k
AIR @ 120VAC10k
AIR @ 240VAC10k
AIR @ 48VDC5k
Phase ConnectionAny
Terminal ConnectionScrew Clamp
Min. Wire Size (AWG)12
Max. Wire Size (AWG)2
Length (In.)3.00
Width (In.)0.75
Depth (In.)2.91
Instantaneous TripFixed
High Amp Trip Setting54
Frame Size100A/QO
For Use With QO Load Centers and NQOD Panelboards
Standards UL, CSA, HACR
Panelboard MountingPlug-In
Weight 0.250000


QO Circuit Breaker, Current Rating 40 Amps, Number of Poles 1, Minimum Wire Size 12 AWG, Maximum Wire Size 2 AWG

QO (Plug-In) and QOB (Bolt-On) Circuit Breakers
  • Qwik-Open breakers are for use only with QO load centers, NQ and NQOD panelboards. QOB breakers are for use only with NQ or NQOD panelboards. Rated for aluminum and copper conductors.
  • 120/240VAC (1 and 2 pole: 120VAC, 3 pole: 240VAC) Visi-Trip indicator Standard and VH breakers are UL Listed as HACR type

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