FA24020AB **Old Style** - 20 Amp Circuit Breaker

FA24020AB **Old Style** - 20 Amp Circuit Breaker

Keeping your existing electrical system operating often comes down to finding the right replacement—not just one with the correct amp rating, but one that matches the original form and mounting style. The FA24020AB Old Style is a 20 Amp, 2-pole thermal-magnetic molded case circuit breaker built for compatible FA-frame I-Line systems. It features an I-Line plug-in design with an A-B phase configuration, making it suitable for installations requiring this arrangement.

The thermal-magnetic trip unit responds to both sustained overloads and short circuits, helping protect your connected equipment and branch circuits during normal operation. Rated for 14kA at 480VAC and 18kA at 240VAC, this breaker is designed for 60Hz systems, calibrated for 40°C operation, and carries a HACR Type rating for compatible heating, air conditioning, and refrigeration equipment.

Key Features and Benefits

• 20 Amp current rating
• Two-pole molded case circuit breaker
• FA frame design
• Old Style configuration
• Thermal-magnetic trip mechanism for overload and short-circuit protection
• I-Line plug-in mounting style
• A-B phase configuration
• Interrupting capacity of 14kA at 480VAC and 18kA at 240VAC
• HACR Type rated
• Designed for 60Hz electrical systems
• Calibrated for 40°C operation
• Form, fit, and functional replacement for compatible FA-frame equipment
• Built to last for continued service in existing electrical systems
  

Technical Specifications

• Part Number: FA24020AB Old Style
  
• Type: FA
  
• Product Type: Molded Case Circuit Breaker
  
• Amperage: 20 Amps
  
• Poles: 2
  
• Trip Type: Thermal-Magnetic
  
• Frequency: 60Hz
  
• Operating Temperature: 40°C Calibration
  
• A.I.C. Rating: 14kA @ 480VAC; 18kA @ 240VAC
  
• Mounting Style: I-Line Plug-In
  
• Phase: A-B
  
• HACR Rated: Yes
  
• Dimensions:
  • Width: 3.00 in.
  • Height: 8.75 in.
  • Depth: 4.38 in.
• Approximate Shipping Weight: 6.25 lbs.
  

Material Compliance and Certifications

The FA24020AB Old Style is intended for use in compatible FA-frame I-Line electrical distribution equipment that matches its electrical ratings, mounting style, and phase configuration. Always verify compatibility before installation. Installation should be completed by qualified personnel and in accordance with the National Electrical Code (NEC), local electrical codes, and the equipment manufacturer's requirements. This breaker is HACR Type rated for compatible HVAC applications.

Where It Works Best

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

• Commercial buildings
• Industrial facilities
• Manufacturing plants
• Office buildings
• Schools and universities
• Healthcare facilities
• Warehouses
• Compatible FA-frame I-Line panelboards
• Compatible I-Line switchboards
• HVAC equipment requiring HACR Type protection