CHB370 - 70Amp Circuit Breaker

CHB370 - 70Amp Circuit Breaker

The Eaton CHB370 is a 70 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 already installed in the panel. It’s built for 240V three-pole circuits where all three conductors need to trip together, and it installs using a plug-in design that keeps the original CH panel layout unchanged.

In everyday use, this breaker is commonly found in residential and light commercial systems handling mid-to-higher range three-pole 240V loads. Most of the time, it’s used for replacement work—matching the existing breaker so the system continues operating the way it was originally designed, without changes to wiring or panel configuration.

Installation is straightforward in compatible Eaton CH Loadcenters. The plug-in CH design allows the breaker to seat directly into the panel without modification, which helps keep maintenance work simple and predictable when servicing an existing system.

Inside, the CHB370 uses a thermal magnetic trip mechanism, which responds to both overload conditions and short-circuit faults. It’s rated at 10 kAIC, which aligns with standard fault levels typically found in residential and light commercial CH installations. With support for #14–8 AWG conductors, it’s suited for three-pole branch circuits that require coordinated protection across all legs.

At its core, the CHB370 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

• 70 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: CHB370
  
• Product Type: Thermal magnetic circuit breaker
  
• Type: CHB
  
• Amperage Rating: 70 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: 3.8 in D x 3.3 in H x 2.3 in W
  
• Weight: 0.9 lb

Material Compliance and Certifications

• The Eaton CHB370 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 a qualified electrical professional following applicable electrical codes and safety requirements.

Where It Works Best

• Eaton CH Loadcenters
• Residential electrical panels
• Light commercial electrical systems
• Three-pole 240V branch circuits
• Replacement of existing CH 70A breakers
• Maintenance work in installed CH systems
• Circuits requiring all poles to trip together
• Situations where matching existing panel layout matters