CH120AF - 20Amp Circuit Breaker

CH120AF - 20Amp Circuit Breaker

If you're replacing an existing CH120AF breaker, chances are you're looking for more than a matching amp rating. The breaker type, mounting style, and panel compatibility all play a role in making sure the replacement fits the equipment it was designed for. The CH120AF is a 20 Amp, 1-pole Type CHAF circuit breaker with a plug-on design and Branch Feeder Type Arc Fault Circuit Interruption (AFCI), intended for use in compatible CH load centers and panelboards.

This breaker is commonly found in residential electrical systems where Branch Feeder AFCI protection is part of the original installation. In addition to helping protect branch circuits from overloads and short circuits, it is designed to detect specified arc fault conditions within the circuit. With a 10kA interrupting rating at 120VAC, the CH120AF is suited for applications that require this particular combination of ratings and protection features.

For electricians and maintenance professionals, finding the right replacement often comes down to matching what's already in the panel. The CH120AF provides the form, fit, and function needed for compatible CH equipment, helping maintain the original configuration of the electrical system. Built to last, it remains a practical choice for repairs, maintenance work, and replacement projects involving existing CH installations.

Key Features and Benefits

• 20 Amp current rating
• Single-pole circuit breaker
• Type CHAF configuration
• Branch Feeder Type Arc Fault Circuit Interruption (AFCI)
• Plug-on mounting style
• Designed for compatible CH load centers and panelboards
• Helps protect branch circuits from overloads and short circuits
• Designed to detect specified branch feeder arc fault conditions
• Maintains original equipment form, fit, and function
• Suitable for maintenance and replacement applications
• Built to last in properly maintained electrical systems
  

Technical Specifications

• Part Number: CH120AF
  
• Type: CHAF
  
• Poles: 1
  
• Amperage: 20 Amps
  
• Voltage Rating: 120 VAC
  
• A.I.C. Rating: 10kA @ 120VAC
  
• Protection Type: Branch Feeder Type Arc Fault Circuit Interruption (AFCI)
  
• Mounting Style: Plug-On
  
• Width: 0.75 in.
• Height: 4.63 in.
• Depth: 2.50 in.
• Approximate Dimensions: 0.75"W × 4.63"H × 2.50"D
  
• Approximate Ship Weight: 1.10 lbs.
  

Material Compliance and Certifications

• The CH120AF is intended for installation in compatible electrical equipment and should be installed in accordance with applicable electrical codes, manufacturer requirements, and local regulations. Compatibility with the intended load center or panelboard should always be verified before installation.
  

Where It Works Best

The CH120AF is commonly used in:

• Compatible CH load centers and panelboards
• Residential electrical systems
• Branch circuits requiring Branch Feeder AFCI protection
• Electrical maintenance and repair projects
• Replacement of existing CHAF breakers
• Existing installations where maintaining original equipment compatibility is important
• Applications requiring a 20 Amp single-pole AFCI breaker
• Projects involving compatible CH electrical distribution equipment

For applications requiring a 20 Amp Type CHAF circuit breaker with Branch Feeder Arc Fault protection, the CH120AF provides the ratings and configuration needed to maintain compatibility with existing electrical equipment.