Square D QO390 3-Pole 90-Amp Circuit Breaker

Square DSKU: QO390

Precio:
Precio de venta$111.00

Gastos de envío calculados en la caja

Stock:
Agotado

Descripción

Discover Enhanced Overcurrent Protection with QO/QOB Circuit Breakers

Elevate your AC system's safety and efficiency with our range of QO and QOB thermal magnetic circuit breakers. Engineered for reliability, these circuit breakers feature an over center, trip-free toggle mechanism, ensuring swift action with quick make and quick break functionality. With positive handle indication and VisiTrip trip indication, you'll have clear visibility into circuit interruptions.

Key Features:

  • Overcurrent protection and switching for AC systems
  • Over center, trip-free toggle mechanism
  • Quick make, quick break action
  • Positive handle indication
  • VisiTrip trip indication for clear visual confirmation

Product Specifications:

  • Range: QO
  • Current Rating: 90 A
  • Voltage Rating:
    • 120/240 V AC
    • 240 V AC
    • 120 V AC
  • Mounting Type: Plug-in
  • Number of Poles: 3P
  • Circuit Breaker Type: Standard
  • Interrupt Rating: 10 kA
  • Number of Panel Spaces: 3
  • Wire Size: AWG 4 to AWG 2/0 (copper or aluminum)
  • Tightening Torque: 49.56 lbf.in (5.6 N.m)
  • Dimensions:
    • Height: 3.50 in (89 mm)
    • Width: 2.24 in (57 mm)
    • Depth: 2.91 in (74 mm)
  • Net Weight: 1.05 lb (0.476 kg)
  • Certifications: UL Listed, CSA Certified
  • Ambient Rating: 104 °F (40 °C)

Additional Options: Explore our range of factory-installed accessories, including shunt trips, auxiliary switches, and alarm switches, to customize your circuit breaker setup according to your needs.

Certifications: Rest assured knowing that our QO circuit breakers are UL Listed under UL File E84967 and CSA Certified under CSA Master Contract 153555.

Upgrade your overcurrent protection system with the reliability and performance of QO/QOB circuit breakers.

Why Pros Choose Sonic Electric

Supplying professionals and homeowners with trusted electrical solutions for 40 years.

Fast, Reliable Shipping

Most orders ship same day or within 2 days—keeping your projects on schedule.

Hassle-Free Returns

30-day returns—because mistakes happen. Some exclusions apply.

Expert Support When You Need It

Real people, real solutions—get help fast by chat, email, or phone.

Contractor Pricing That Protects Your Margins

Save more on every order with bulk-friendly pricing designed to keep you competitive.

Tax-Free Savings

No sales tax on orders shipping outside California.

Rated ★★★★★ by 400+ Pros & Homeowners

“Good price and fast delivery—exactly what contractors need. Sonic Electric is now our go-to supplier.” – Appro Electric

Trusted by contractors, electricians, and homeowners— see what they’re saying.

Ways to Save on Your Order