Square D QOB140 40A 1-Pole Standard – Bolt-On – 120/240V

The Square D QOB140 is a 40 Amp, 1-Pole standard bolt-on circuit breaker designed for QO loadcenters. It provides reliable protection for 120/240V residential and commercial circuits, with a 10 kA interrupt rating and box lug connections for secure installation.

Electrical Specifications

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

Mechanical & Mounting Specifications

• Mounting Mode: Bolt-On
• Connection Terminals: Box lugs
• Wire Size Range: AWG 8–2 Cu/Al
• Tightening Torque: 44.3 lb-in

Certifications

• UL Listed
• CSA Certified
• HACR Rated

Physical Dimensions

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

Key Features

• Reliable 40A protection for 120/240V circuits
• Bolt-on design compatible with Square D QO loadcenters
• 10 kA interrupt rating ensures safe overcurrent protection
• Durable box lug connections for secure wiring
• Suitable for residential and commercial applications
• UL, CSA listed and HACR rated

Returns are easy

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

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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.