Mini Circuit Breaker 20A 3-Pole 120/240VAC 10kA Plug-in Mount
Mini Circuit Breaker 20A 3-Pole 120/240VAC 10kA Plug-in Mount
Mini Circuit Breaker 20A 3-Pole 120/240VAC 10kA Plug-in Mount
Mini Circuit Breaker 20A 3-Pole 120/240VAC 10kA Plug-in Mount
Mini Circuit Breaker 20A 3-Pole 120/240VAC 10kA Plug-in Mount
Square D

Square D QO320 Mini Circuit Breaker 20A 3-Pole 120/240VAC 10kA Plug-in Mount

  • MPN: QO320
  • UPC: 785901400684
  • PPN: SCH-QO320

CAD

$284.03

/ EA

Available to Order

Available to Ship Same/Next Business Day if In Stock and Ordered before 12:00 PM EST

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Spec sheet

Description

Mini Circuit Breaker 20A 3-Pole 120/240VAC 10kA Plug-in Mount

Features

  • The QO320 features Schneider Electric s exclusive red Visi-TripTM indicator, which instantly flags a tripped breaker among a row of many. This visual shortcut saves industrial technicians and homeowners significant troubleshooting time, allowing for faster power restoration and less downtime during electrical faults.
  • Designed as a dedicated 3-pole breaker, this unit ensures that if any single phase experiences an overcurrent event, all three poles trip simultaneously. This "common trip" functionality is critical for protecting expensive 240V or 208V three-phase motors and machinery from "single-phasing" damage, which can lead to motor burnout and costly repairs.
  • This breaker utilizes the industry-standard QO "Plug-On" mounting system, engineered for a secure, bolt-free connection to the bus bar. It is specifically compatible with QO, QOT, and QO3 load centers and NQ-type panelboards, ensuring a fast, reliable installation that maintains the integrity of your Square D distribution system.
  • The QO320 utilizes a sophisticated thermal-magnetic trip mechanism that provides a calibrated delay for high-inrush currents typical of small motors or HVAC compressors while offering nearly instantaneous protection against short circuits. This dual-action response ensures your equipment starts reliably while maintaining a rigorous safety envelope for your wiring.

Documentation & Downloads

Specifications

Additional

Current Rating
20 A
Breaking Capacity
10 kA 120/240 V AC 50/60 Hz
Trip Mechanism
Over center, trip free toggle
Ambient Temperature Rating
40 C (104 F)
Electrical Connection
Pressure plate
Tightening Torque
4 N m (35.4 lbf in)
Height
76 mm (2.99 in)
Depth
74 mm (2.91 in)
Product Certifications
UL Listed, CSA Certified, RoHS Compliant
Halogen Free
Yes
Range Of Product
QO
Warranty
18 months
Voltage120/240 V AC
Circuit Breaker TypeStandard thermal magnetic
Trip IndicationVisiTrip visual indication
Number of Poles3
Wire SizeAWG 14 to AWG 8 copper or aluminum
Mounting TypePlug-in
Width57 mm (2.24 in)
Net Weight0.386 kg (0.85 lb)
Mercury FreeYes
Toxic Heavy Metal FreeYes
Circuit Breaker ApplicationHACR rated
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