Square D QOB320 Miniature Circuit Breaker – 20A – 3-Pole – 120/240V – 10kA – Bolt-On – QO Series

The Square D QOB320 is a 20A, 3-pole bolt-on miniature circuit breaker from the QO Series. It is designed for compatible electrical distribution applications and provides circuit protection against overloads and short circuits. The breaker is rated for 120/240VAC applications, features a 10kA AC interrupting rating, and includes 5kA interrupting capacity at 48VDC. Its bolt-on construction uses mounting bolts for secure installation and occupies three panel spaces.

Specifications:

• Manufacturer : Schneider Electric / Square D
• Product Type : Miniature Circuit Breaker
• Catalog No. : QOB320
• Alternate Model : Q0B320
• Product Family : QO Series
• Breaker Type : Standard Circuit Breaker
• Current Rating : 20A
• System Voltage : 120VAC, 120/240VAC, 240VAC, 48VDC
• Number of Poles : 3-Pole
• Phase : 3-Phase
• Mounting Type : Bolt-On
• Electrical Connection : Pressure Plate
• Interrupting Rating : 10kA AC
• DC Interrupting Rating : 5kA at 48VDC
• Ratings : HACR Rated
• Number of Panel Spaces : 3
• Wire Size : AWG 14–AWG 8 Copper or Aluminum
• Ambient Rating : 40°C / 104°F
• Dimensions (H × W × L) : 3" × 2.25" × 2.91"
• Application : Branch Circuit Overload and Short-Circuit Protection
• Brand : Square D
• Authenticity : Genuine Schneider Electric / Square D Product

Part Numbers & Identification:

• Manufacturer Part Number (MPN) : QOB320
• Catalog Number : QOB320
• Alternate Model : Q0B320
• Product Family : Square D QO Miniature Circuit Breakers
• Series : QO
• Brand : Square D
• Manufacturer : Schneider Electric
• Product Type : Bolt-On Miniature Circuit Breaker
• Model : QOB320
• Breaker Configuration : 3-Pole, 20A
• upc: 785901417095

Compatibility:

Designed for use with compatible Square D / Schneider Electric QO Series electrical distribution equipment that accepts QO bolt-on circuit breakers. The QOB320 is a 3-pole, 20A bolt-on breaker designed for compatible three-phase applications and occupies three panel spaces.

The breaker accommodates 14–8 AWG copper or aluminum conductors through its pressure-plate connection. Always verify the specific panelboard or load center model, approved breaker type, system voltage, pole configuration, interrupting rating, wire size, and installation requirements before installation.

Certifications:

• QO Series
• 20A Rating
• 3-Pole / 3-Phase
• 120/240VAC Rated
• Bolt-On Mounting
• 10kA AC Interrupting Rating
• 5kA at 48VDC
• HACR Rated
• Pressure-Plate Electrical Connection
• 3 Panel Spaces
• AWG 14–AWG 8 Copper or Aluminum
• Genuine Schneider Electric / Square D Product

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You may return items within 10 days of delivery for a refund.

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