Square D QOB140 40A 1P Standard Bolt-On Circuit Breaker – 120/240V

The Square D QOB140 circuit breaker provides dependable 40A, single-pole protection for 120/240V electrical systems. Designed for Square D QO load centers and panelboards, this bolt-on breaker delivers reliable thermal-magnetic overcurrent protection for residential and commercial applications.

Voltage and Rating

• Current Rating: 40 Amps
• Voltage Rating: 120/240 Volts AC
• Interrupt Rating: 10 kAIC
• Poles: 1-Pole
• Breaker Type: Standard thermal-magnetic

Key Features

• Bolt-on mounting for secure panelboard installation
• Thermal-magnetic trip mechanism for overload and short-circuit protection
• HACR rated for HVAC applications
• Durable box lug terminals for solid conductor connection
• Compatible with Square D QO load centers and panelboards
• Suitable for residential and commercial power distribution

Installation Details

• Mounting Mode: Bolt-On
• Terminal Type: Box lugs
• Wire Size: AWG 8 to AWG 2 Cu/Al
• Tightening Torque: 44.3 lb-in

Physical Specifications

• • Height: 3.1 in
  • Width: 0.7 in
  • Depth: 2.9 in
  • Weight: 0.311 lbs

Certifications

• UL Listed
• CSA Certified
• HACR Rated

Product Information

• • Manufacturer: Schneider Electric
  • Brand: Square D
  • Product Range: QO
  • Model Number: QOB140
  • UPC: 785901416784

Returns are easy

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

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My Circuit Breakers offers one to five day delivery in the United States. The variation depends on the chosen shipping speed and the warehouse location for the product(s).

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My Circuit Breakers provides a comprehensive 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer). Extended warranties are available upon request.