Square D CH120 Circuit Breaker 20A 1-pole 120/240V

Product Description

The SQUARE D CH120 is a single-pole, plug-on circuit breaker rated for 20 amps at 120/240 volts AC, designed for installation in CH Series load centers. With a 10 kiloamp interrupting rating and UL 489 listing, this breaker provides reliable overcurrent protection in residential and light commercial panelboards. The plug-on mounting style allows for straightforward installation without additional hardware. Electricians and panel technicians use this breaker as a direct-fit addition or replacement in compatible load center enclosures. It accepts copper or aluminum conductors in the appropriate wire size ranges for the application.

The CH120 is suited for branch circuit protection in residential services and light commercial electrical systems. It installs in CH Series Square D load centers where single-pole, 20-amp protection is required for general-purpose circuits such as lighting, receptacles, and small appliance loads. Its compact form factor fits standard panel configurations without requiring derating adjacent slots. Electricians working on service upgrades, panel additions, or breaker replacements will find this a straightforward drop-in solution within compatible enclosures.

Key Features

• 20-amp current rating for standard branch circuit protection
• Single-pole, 120/240 volt AC rating
• 10 kiloamp interrupting rating for fault current protection
• Plug-on mounting for tool-free bus connection
• Accepts copper or aluminum conductors: one conductor 14 to 8 AWG or two conductors 14 to 10 AWG
• UL 489 listed

Compatibility

Designed for use with CH Series Square D load centers as specified by the manufacturer.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. De-energize the load center and verify the main breaker is off before handling any panelboard components. Confirm conductor wire size and material are within the listed AWG ranges before terminating. Do not install in load centers other than those for which this breaker is rated.

Technical Specifications

• Current Rating: 20 amps
• Voltage Rating: 120/240 volts AC
• Interrupting Rating: 10 kiloamps
• Number of Poles: 1
• Mounting: Plug-On
• Wire Size: (1) 14 to 8 AWG Copper/Aluminum; (2) 14 to 10 AWG Copper/Aluminum
• Approval: UL 489
• Dimensions: 3.5 inches L x 5 inches W x 3 inches H

Standard Information

• Brand: SQUARE D
• Manufacturer Part Number: CH120