CHB320 - 20Amp Circuit Breaker

CHB320 - 20Amp Circuit Breaker

The Eaton CHB320 is a 20 Amp, three-pole circuit breaker designed for Eaton CH Loadcenters, and it’s typically used when you need a direct replacement for an existing breaker in a three-pole setup. It’s built for 240V circuits where all three conductors need to disconnect together, and it installs into compatible CH panels using a plug-in design that keeps the original panel layout unchanged and easy to work with.

In real-world use, this breaker is usually found in residential and light-commercial panels, handling smaller three-pole 240V circuits. Most of the time, it’s not about changing anything in the system—it’s about matching what’s already there so the panel continues to run 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 modification, which helps keep replacement work simple and predictable when working inside an existing CH system. Inside, the CHB320 uses a thermal magnetic trip system, which responds to both overload conditions and short-circuit events. It’s rated at 10 kAIC, which aligns with typical fault levels found in standard residential and light commercial electrical systems. With support for #14–8 AWG conductors, it’s suited for smaller branch circuits that still require a three-pole configuration.

At its core, the CHB320 is a direct replacement breaker for Eaton CH Loadcenters. It’s used to keep existing electrical systems consistent and properly matched, without changing the panel layout or introducing compatibility issues.

Key Features and Benefits

• 20 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 #14–8 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: CHB320
  
• Product Type: Thermal magnetic circuit breaker
  
• Type: CHB
  
• Amperage Rating: 20 Amps
  
• Voltage Rating: 240V AC
  
• Number of Poles: 3
  
• Interrupt Rating: 10 kAIC
  
• Wire Size: #14–8 AWG
  
• Mounting Style: Plug-in (Eaton CH Loadcenters)
  
• Dimensions: 6 in D x 2 in H x 4 in W
  
• Weight: 1 lb

Material Compliance and Certifications

• The Eaton CHB320 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 electrical systems
• Light commercial electrical systems
• Replacement of existing CH 20A three-pole breakers
• Maintenance work in installed CH systems
• Circuits requiring all poles to trip together
• Situations where matching existing panel layout matters
• Standard protection in established CH installations