Square D QO QOB340 40A 3P 120/240V Bolt-On Circuit Breaker
Square D QO QOB340 40A 3P 120/240V Bolt-On Circuit Breaker - Image 2
Square D QO QOB340 40A 3P 120/240V Bolt-On Circuit Breaker - Image 3
Square D QO QOB340 40A 3P 120/240V Bolt-On Circuit Breaker - Image 4
Square D QO QOB340 40A 3P 120/240V Bolt-On Circuit Breaker - Image 5
Square D QO QOB340 40A 3P 120/240V Bolt-On Circuit Breaker - Image 6
Square D QO QOB340 40A 3P 120/240V Bolt-On Circuit Breaker - Image 7
Square D QO QOB340 40A 3P 120/240V Bolt-On Circuit Breaker - Image 8
Square D QO QOB340 40A 3P 120/240V Bolt-On Circuit Breaker
Square D QO QOB340 40A 3P 120/240V Bolt-On Circuit Breaker - Image 2
Square D QO QOB340 40A 3P 120/240V Bolt-On Circuit Breaker - Image 3
Square D QO QOB340 40A 3P 120/240V Bolt-On Circuit Breaker - Image 4
Square D QO QOB340 40A 3P 120/240V Bolt-On Circuit Breaker - Image 5
Square D QO QOB340 40A 3P 120/240V Bolt-On Circuit Breaker - Image 6
Square D QO QOB340 40A 3P 120/240V Bolt-On Circuit Breaker - Image 7
Square D QO QOB340 40A 3P 120/240V Bolt-On Circuit Breaker - Image 8

Disclaimer: Actual product colors may vary slightly from the images shown due to different monitor settings and lighting conditions during photo shoots.

Square D

Square D QO QOB340 40A 3P 120/240V Bolt-On Circuit Breaker

SKU: QOB340
(0)
$62.95
-32% $92.00 $62.95
Out of stock
Condition

Square D QOB340: 40 Amp 3-Pole standard thermal-magnetic circuit breaker, 120/240V, 10kA, bolt-on mount, UL listed.

  • Manufacturer: Schneider Electric
  • Brand: Square D
  • Product Range: QO (for Square D QO loadcenters, NQ and NQOD panelboards and equipment)
  • UPC: 785901417149
  • Model Number: QOB340
  • Breaker Type: Standard
  • Amperage: 40 Amps
  • Poles: 3-Pole
  • Voltage: 120/240 Volts AC
  • Interrupt Rating: 10 kAIC
  • Mounting Mode: Bolt-on
  • Wire Size: AWG 8...AWG 2 Cu/Al
  • Tightening Torque: 44.3 lb-in
  • Dimensions: Height: 3.1 in; Width: 2.2 in; Depth: 2.9 in
  • Weight: 0.800 lbs
  • Certifications: UL Listed, CSA

This Square D QOB340 bolt-on circuit breaker provides reliable 40A, 3-pole overcurrent protection for 120/240V circuits in QO loadcenters and NQ/NQOD panelboards. Featuring thermal-magnetic trip and VisiTrip indication, it delivers durable performance and enhanced safety for commercial and residential applications.

There is a $15 charge for delivery under $250 orders. Additional charges will be imposed by our couriers for delivery to remote areas, a surcharge may be levied to cover carriage to these areas.

Your product is covered by a 12 month Warranty or more if you opted for the extended warranty. Make sure you register your product.