Square D™ QO™ QO390 Standard Miniature Circuit Breaker, 240 V AC, 90 A, 10 kA Interrupt, 3 Poles, Thermal Magnetic Trip
QO and QOB one, two and three pole thermal magnetic circuit breakers provide overcurrent protection and switching on ac and dc systems. These circuit breakers have an over center, trip free toggle mechanism with quick make, quick break action and positive handle indication. They also have VisiTrip trip indication, which provides a visual indication that the circuit breaker has tripped and interrupted the circuit. A full line of features and factory installed accessories are also available such as shunt trips, auxiliary switches and alarm switches. This 3 pole QO circuit breaker is rated at 90A at 120/240VAC. This unit provides 10kA breaking capacity and plug in mounting. QO circuit breakers are UL Listed under UL File E84967 and are CSA Certified under CSA Master Contract 153555.
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BrandSquare D™
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UPC785901004400
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Manufacturer Part NumberQO390
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CountryUSA
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Temperature Rating40 deg C
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Frequency Rating50/60 Hz
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Trip TypeThermal Magnetic
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TypeStandard
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Connection TypeBox Lug
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Mounting TypePlug-In
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Voltage Rating240 V AC
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Amperage Rating90 A
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Wire Size4 to 2/0 AWG
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Number of Poles3
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Dimensions2.91 in L x 2.25 in W x 3.5 in H
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Interrupt Rating10 kA
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Phase3
- Reliable and durable
- Plug-on neutral design and shorter footprint for faster installs
- Simple design and clear instructions for quick setup
- Time-saving diagnostics with touch of a button
- Common trip
- 4 to 2/0 AWG aluminum/copper wire range
| Competitor Name | Competitor Part Number |
|---|---|
| Grainger | 1D331 |
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Alternative Part Number8139492
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UNSPSC39121603
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IDEA Index ID8139492
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Package DescriptionEACH
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Standards/ApprovalsCSA Certified|HACR Rated|PROP65: This product can expose you to chemicals including: Diisononyl phthalate (DINP), which is known to the State of California to cause cancer and Di-isodecyl phthalate (DIDP), which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov|RoHS Compliant|UL Listed
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Warranty18 months
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RoHS
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Specification Sheet
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Owners/User Manual
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Full Engineering Drawing
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Technical Bulletin
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Square D™ QO™ QO390 Standard Miniature Circuit Breaker, 240 V AC, 90 A, 10 kA Interrupt, 3 Poles, Thermal Magnetic Trip
QO and QOB one, two and three pole thermal magnetic circuit breakers provide overcurrent protection and switching on ac and dc systems. These circuit breakers have an over center, trip free toggle mechanism with quick make, quick break action and positive handle indication. They also have VisiTrip trip indication, which provides a visual indication that the circuit breaker has tripped and interrupted the circuit. A full line of features and factory installed accessories are also available such as shunt trips, auxiliary switches and alarm switches. This 3 pole QO circuit breaker is rated at 90A at 120/240VAC. This unit provides 10kA breaking capacity and plug in mounting. QO circuit breakers are UL Listed under UL File E84967 and are CSA Certified under CSA Master Contract 153555.
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