Square D CHF240 2-pole 40 Amp Circuit Breaker Ch Series

Product Description

The SQUARE D CHF240 is a 2-pole, 40-amp plug-on circuit breaker designed for use in CH Series load centers. It provides overcurrent and short-circuit protection for 120/240-volt AC branch circuits in residential and light commercial electrical systems. The common-trip design ensures both poles open simultaneously under fault conditions. With a 10-kiloamp interrupting rating and UL 489 listing, this breaker meets standard requirements for load center installations. Licensed electricians install this breaker as part of panel upgrades, new construction wiring, or branch circuit additions.

The CHF240 is suited for residential and light commercial applications where a 2-pole, 40-amp breaker is required for circuits such as electric ranges, dryers, HVAC equipment, and similar double-pole loads. Its plug-on mounting style allows for straightforward installation in compatible CH Series load centers without the need for additional hardware. The breaker accepts copper or aluminum conductors ranging from 10 AWG to 1/0 AWG, providing flexibility for various wiring configurations.

Key Features

• 40-amp current rating for double-pole branch circuit protection
• Common-trip mechanism opens both poles simultaneously under fault conditions
• Plug-on mounting for direct installation in CH Series load centers
• 10-kiloamp interrupting rating for fault current protection
• Accepts 10 AWG to 1/0 AWG copper or aluminum conductors
• UL 489 listed for compliance with standard circuit breaker requirements

Compatibility

Designed for use with CH Series 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 applicable local codes. De-energize the load center and verify the panel is fully de-energized before handling or installing the breaker. Ensure conductor size and type are within the rated wire range before terminating. Do not exceed the breaker's rated ampacity or interrupting capacity for the intended circuit application.

Technical Specifications

• Current Rating: 40 amps
• Voltage Rating: 120/240 volts AC
• Number of Poles: 2
• Interrupting Rating: 10 kiloamps
• Trip Type: Common Trip
• Mounting: Plug-On
• Wire Size: 10 to 1/0 AWG (Copper/Aluminum)
• Length: 1.5 inches
• Width: 3.3 inches
• Height: 2.6 inches
• Approval: UL 489

Standard Information

• Brand: SQUARE D
• Manufacturer Part Number: CHF240