CHB3090 - 90Amp Circuit Breaker

CHB3090 - 90Amp Circuit Breaker

The Eaton CHB3090 is a 90 Amp, three-pole circuit breaker made for Eaton CH Loadcenters, and it’s typically used when you need a direct replacement that matches what’s already installed in an existing panel. It’s built for 240V three-phase style or three-pole applications, where all three conductors need to trip at the same time, and it fits into compatible CH loadcenters using a plug-in design that keeps everything aligned with the original setup.

In real-world use, this breaker is usually found in residential and light commercial systems handling larger three-pole 240V loads. Most of the time, it’s chosen for straightforward replacement work—matching the existing breaker so the panel keeps operating the way it was originally designed, without changes to wiring or layout.

Installation is simple in compatible Eaton CH Loadcenters. The plug-in design allows the breaker to seat directly into the panel without modification, which helps keep your service work predictable when working inside an existing CH system. Inside, the CHB3090 uses a thermal magnetic trip system, which responds to both overloads and short circuits as they happen. It’s rated at 10 kAIC, which fits standard fault levels commonly found in residential and light commercial CH installations. With support for #4–1/0 AWG wire, it’s built for heavier three-pole circuits that require larger conductors. The three-pole design makes sure all legs disconnect together, which is important for balanced 240V systems and other multi-wire setups that rely on synchronized protection.

Key Features and Benefits

• 90 Amp, 3-pole breaker for Eaton CH Loadcenters
• Designed for 240V three-pole 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
• Three-pole switching for simultaneous disconnect
• Keeps original CH panel layout unchanged
• Common in residential and light commercial systems
• Direct replacement for existing CH breakers

Technical Specifications

• Catalog Number: CHB3090
  
• Product Type: Thermal magnetic circuit breaker
  
• Type: CHB
  
• Amperage Rating: 90 Amps
  
• Voltage Rating: 240V
  
• Number of Poles: 3
  
• Interrupt Rating: 10 kAIC
  
• Wire Size: #4–1/0 AWG
  
• Mounting Style: Plug-in (Eaton CH Loadcenters)
  
• Dimensions: 5.7 in D x 2.6 in H x 3.7 in W
  
• Weight: 0.9 lb

Material Compliance and Certifications

• The Eaton CHB3090 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
• 240V three-pole branch circuits
• Residential and light commercial electrical systems
• Replacement of existing CH 90A three-pole breakers
• Maintenance work in installed CH panel systems
• Circuits requiring all poles to disconnect together
• Situations where matching existing CH configuration matters