FA24040AB **Old Style** - 40 Amp Circuit Breaker

FA24040AB **Old Style** - 40 Amp Circuit Breaker

If you're maintaining an existing electrical distribution system, finding the right replacement breaker matters. The FA24040AB Old Style is a 40 Amp, 2-pole molded case circuit breaker built for use in compatible FA-frame I-Line plug-in panelboards and switchboards with an A-B phase configuration. Rather than changing your existing setup, this breaker is intended to match the original form, fit, and function of compatible installations.

Its thermal-magnetic trip mechanism provides protection against both sustained overloads and short circuits, making it well suited for many commercial and industrial electrical systems.

Key Features and Benefits

• 40 Amp current rating
• Two-pole configuration
• FA frame, Old Style design
• Thermal-magnetic trip unit for overload and short-circuit protection
• I-Line plug-in mounting
• A-B phase configuration
• HACR Type rated
• Designed for 60Hz electrical systems
• Rated for operation in ambient temperatures up to 40°C
• Form, fit, and functional replacement for compatible FA-frame installations
• Built to last for continued use in existing electrical systems
  

Technical Specifications

• Part Number: FA24040AB 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: A-B
  
• 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 FA24040AB Old Style is an HACR Type molded case circuit breaker intended for installation in compatible FA-frame I-Line equipment that matches its electrical ratings and mounting configuration. Always confirm compatibility before installation and follow the equipment manufacturer's instructions along with all applicable National Electrical Code (NEC) requirements and local electrical codes.

Where It Works Best

This circuit breaker is commonly found in compatible electrical distribution equipment used in:

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