CHB290 - 90Amp Circuit Breaker

CHB290 - 90Amp Circuit Breaker

The Eaton CHB290 is a 90-amp, two-pole circuit breaker designed for Eaton CH Loadcenters. It is typically used as a direct replacement that matches an existing panel setup without changing the system's layout. It's built for 120/240V circuits where both legs must trip together, and it fits into compatible CH series panels using a plug-in design that keeps installation and replacement work simple and consistent.

In real-world use, this breaker is commonly found in residential and light commercial panels handling larger 240V branch circuits. Most of the time, it's chosen for straightforward replacement work—matching the existing breaker so the panel stays consistent and continues operating as originally designed.

Installation is straightforward in compatible Eaton CH Loadcenters. The plug-in design allows the breaker to seat directly into the panel without modifications, which helps keep maintenance work predictable when working inside an existing CH system. Inside, the CHB290 uses a thermal magnetic trip mechanism that responds to both overloads and short circuits as they occur. It's rated at 10 kAIC, which fits standard residential and light commercial fault levels in CH systems.

With support for #4–1/0 AWG wire, it's designed for heavier branch circuits commonly used in 90 amp applications. The two-pole design ensures both conductors disconnect at the same time, which is needed for 240V loads and any circuit that shares protection across both legs.

Key Features and Benefits

• 90 Amp, 2-pole breaker for Eaton CH Loadcenters
• Designed for 120/240V branch circuits
• Plug-in installation for compatible CH panels
• Thermal magnetic protection for overloads and short circuits
• 10 kAIC interrupt rating for standard fault conditions
• Compatible with #4–1/0 AWG conductors
• Two-pole switching for simultaneous disconnect
• Keeps the original CH panel layout unchanged
• Common in residential and light commercial systems
• Direct replacement for existing CH breakers

Technical Specifications

• Catalog Number: CHB290
  
• Product Type: Thermal magnetic circuit breaker
  
• Type: CHB
  
• Amperage Rating: 90 Amps
  
• Voltage Rating: 120/240V
  
• Number of Poles: 2
  
• Interrupt Rating: 10 kAIC
  
• Wire Size: #4–1/0 AWG
  
• Mounting Style: Plug-in (Eaton CH Loadcenters)
  
• Dimensions: 5.6 in D x 1.4 in H x 3.6 in W
  
• Weight: 0.5 lb

Material Compliance and Certifications

• The Eaton CHB290 is UL 489 listed, meeting recognized safety standards for branch circuit protection. It is intended for installation in Eaton CH Loadcenters and should be installed by qualified electrical personnel in accordance with applicable electrical codes and safety requirements.

Where It Works Best

• Eaton CH Loadcenters and CH panelboards
• 120/240V residential and light commercial circuits
• Two-pole branch circuits requiring a shared disconnect
• Replacement of existing CH 90A breakers
• Maintenance work on installed CH electrical systems
• Circuits that require both legs to trip together
• Situations where matching the existing panel layout matters
• Standard protection in established CH systems