FA24040AC **Old Style** - 40 Amp Circuit Breaker

FA24040AC **Old Style** - 40 Amp Circuit Breaker

Keeping an existing electrical system running often comes down to finding the right replacement parts. The FA24040AC Old Style is a 40 Amp, 2-pole molded case circuit breaker made for compatible FA-frame I-Line plug-in panelboards and switchboards using an A-C phase configuration. It serves as a form, fit, and functional replacement, allowing repairs and maintenance without changing the original equipment layout.

Inside the breaker is a thermal-magnetic trip unit that responds to both prolonged overloads and sudden short circuits.

Key Features and Benefits

• 40 Amp current rating
• Two-pole molded case circuit breaker
• FA frame, Old Style construction
• Thermal-magnetic trip unit helps protect against overloads and short circuits
• I-Line plug-in mounting
• A-C phase configuration
• Interrupting rating of 18kA at 240VAC and 14kA at 480VAC
• HACR Type rated
• Suitable for 60Hz electrical systems
• Rated for operation in ambient temperatures up to 40°C
• Form, fit, and functional replacement for compatible FA-frame equipment
• Built to last for continued use in existing electrical systems
  

Technical Specifications

• Part Number: FA24040AC Old Style
  
• Frame Type: FA
  
• Product Type: Molded Case Circuit Breaker
  
• Amperage: 40 Amps
  
• Poles: 2
  
• Trip Unit: Thermal-Magnetic
  
• A.I.C. Rating: 18kA @ 240VAC; 14kA @ 480VAC
  
• Frequency: 60Hz
  
• Mounting Style: I-Line Plug-In
  
• Phase Configuration: A-C
  
• HACR Rated: Yes
  
• Ambient Temperature Rating: 40°C
  
• Dimensions:
  • Width: 3.00"
  • Height: 8.75"
  • Depth: 4.38"
• Approximate Shipping Weight: 6.25 lbs.
  

Material Compliance and Certifications

The FA24040AC Old Style is an HACR Type molded case circuit breaker intended for use in compatible FA-frame I-Line electrical distribution equipment. Before installation, verify that the breaker's ratings, mounting style, and phase configuration match the existing equipment. Installation should always follow the manufacturer's guidelines, the National Electrical Code (NEC), and any applicable local electrical codes.

Where It Works Best

The FA24040AC Old Style is commonly used in compatible legacy electrical systems found in:

• Commercial buildings
• Industrial facilities
• Manufacturing plants
• Office buildings
• Schools and universities
• Healthcare facilities
• Warehouses and distribution centers
• I-Line panelboards
• I-Line switchboards
• HVAC and refrigeration equipment requiring an HACR-rated circuit breaker