Square D QO120 120/240 Volt 20 Amp Plug-On Miniature Circuit Breaker
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Manufacturer Square-D / Schneider
Mfg Catalog # QO120
Crawford Part # 100



  • Product: Miniature circuit-breaker
  • Range: QO
  • Current Rating: 20 A
  • Voltage Rating: 120/240 V AC || 120 V AC || 48 V DC
  • Mounting Type: Plug-in
  • Number Of Poles: 1P
  • Circuit Breaker Type: Standard
  • Ratings: HACR and Switching Duty rated
  • Electrical Connection: Pressure plate


  • Interrupt Rating: 10 kA 120/240 V AC 50/60 Hz || 10 kA 120 V AC 50/60 Hz || 5 kA 48 V DC
  • Number Of Panel Spaces: 1
  • Wire Size: AWG 14...AWG 8 copper or aluminium
  • Tightening Torque: 44.25 lbf.in (5 N.m) 0.02…0.04 in² (10…25 mm²) AWG 8...AWG 2)
  • Height: 3 in (76.20 mm)
  • Depth: 2.91 in (73.91 mm)
  • Width: 0.75 in (19.05 mm)


  • Certifications: UL Listed || CSA
  • Ambient Rating: 104 °F (40 °C)

Ordering And Shipping Details

  • Category: 00004 - QO,QOT 10-30A 1P;10-60A 2P
  • Discount Schedule: DE2A
  • GTIN: 00785901400103
  • Nbr. Of Units In Pkg.: 10
  • Returnability: Yes
  • Country Of Origin: US

Offer Sustainability

  • Green Premium Status: Green Premium product
  • REACh Free Of SVHC: Yes
  • EU RoHs Directive: Compliant
  • Toxic Heavy Metal Free: Yes
  • Mercury Free: Yes
  • Halogen Content Performance: Halogen free product

Contractual Warranty

  • Warranty: 18 months


UPC 78590140010
Product Description 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. This QO miniature breaker is rated as 20 A, 120/240 V, and 1 pole. This unit provides 10 kA breaking capacity and plug in mounting. A full line of factory installed accessories, such as shunt trips, auxiliary switches and alarm switches, is also available QO breakers use a compact 3/4 inch width design for small system footprint. QO circuit breakers are UL Listed under UL File E84967 and are CSA Certified under CSA Master Contract 153555
MDM Pkg GTiN 00785901400103
Length 2.91 in
Warranty Length 18 mth
Voltage 120 Volt
Mounting Type Plug-in
Depth 2.91 in
Country of Origin USA
Family Brand Name Square D by Schneider Electric
Tc Connection PRESSURE PLATE #14 TO #8 AWG(AL/CU)
Short Circuit Current 10 kA
Interrupt Rating 10 kA 120/240 V AC 50/60 Hz; 10 kA 120 V AC 50/60 Hz; 5 kA 48 V DC
Sub Brand QO
CA Prop65 Warning WARNING: This product can expose you to chemicals including: Lead and lead compounds, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov
Width 0.75 in
Operating Temperature 40 AC
Height 3 in
Circuit Breaker Type Standard
Current 20 A
Number of Poles 1 Pole
Wire Size AWG 14...AWG 8 copper or aluminium
Range QO

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