Q1B290 - 90 Amp Circuit Breaker

Q1B290 - 90 Amp Circuit Breaker

When you need a dependable 90A two-pole circuit breaker for maintenance or retrofit work, the Q1B290 delivers. It's a bolt-on thermal magnetic breaker built to respond quickly to overloads or short circuits, helping protect your equipment and wiring from damage. You'll appreciate how it offers consistent performance and long service life, all packaged in a compact design that fits many panel systems.

Key Features and Benefits

• Fast, reliable protection: Thermal magnetic sensing ensures the breaker reacts promptly to fault conditions, minimizing risk to your electrical system.
• User-friendly installation: Bolt-on design offers a secure fit without extra adapters, making replacements or upgrades more straightforward.
• High interrupt capacity: With a 10,000 AIC (amps interrupting capacity) at 120/240 VAC, it can safely handle severe fault conditions.
• Space-efficient form: At only 1.50" wide, it uses just four spaces in a panel, leaving room for other circuits.
• Long-lasting build: Constructed using quality materials designed to handle regular switching and environmental stress without premature failure.

Technical Specifications

• Poles: 2
  
• Rated Current: 90 A
  
• Interrupting Capacity (AIC): 10,000 AIC @ 120/240 VAC
  
• Frame Type: Q1B
  
• Dimensions:
  • Width: 1.50 inches
  • Length: 6.38 inches
  • Depth: 2.31 inches
• Weight: 3.50 lbs
  
• Panel Spaces Required: 4
  

Material Compliance and Certifications

• Industry Standards: The Q1B290 meets industry standard safety and performance benchmarks. It is certified for use in maintenance and retrofit applications, and adheres to applicable electrical codes and material safety requirements. You can count on it for peace of mind in regulated environments.

Where It Works Best

• This breaker is ideal for maintenance or replacement in existing systems where a 90A two-pole solution is required. Whether in commercial buildings, light industrial settings, or upgraded residential panels, the Q1B290 fits well in retrofit projects. Its narrow frame is perfect when you're tight on panel real estate but still need solid protection for branch circuits.