FA26040AB **Old Style** - 40 Amp Circuit Breaker

FA26040AB **Old Style** - 40 Amp Circuit Breaker

The FA26040AB Old Style is a 40 Amp, 2-pole molded case circuit breaker built for compatible I-Line plug-in panelboards using an A-B phase configuration. If you're maintaining an existing electrical distribution system, having the correct breaker matters. This FA-frame breaker is intended as a form, fit, and functional replacement for compatible installations, helping preserve the original panel configuration without requiring modifications.

Its thermal magnetic trip unit responds to both sustained overloads and short circuits, providing the protection expected in commercial and industrial power distribution systems.

Key Features and Benefits

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

Technical Specifications

• Part Number: FA26040AB Old Style
  
• Product Type: Molded Case Circuit Breaker
  
• Frame Type: FA
  
• Amperage: 40 Amps
  
• Poles: 2
  
• Trip Unit: Thermal Magnetic
  
• Interrupting Capacity: 25kA @ 240VAC; 18kA @ 480VAC
  
• Mounting Style: I-Line Plug-In
  
• Phase Configuration: A-B
  
• Frequency: 60Hz
  
• Ambient Rating: 40°C
  
• HACR Type: Yes
  
• Dimensions:
  • 3.00 in. W × 8.75 in. H × 4.38 in. D
• Approximate Shipping Weight: 6.25 lbs.
  

Material Compliance and Certifications

The FA26040AB Old Style is intended for use in compatible FA-frame I-Line panelboards that match its electrical ratings and mounting configuration. It is HACR Type rated for applications requiring that classification. Before installation, confirm compatibility with the existing equipment. Installation should always be completed by qualified personnel and in accordance with the National Electrical Code (NEC), local regulations, and the equipment manufacturer's instructions.

Where It Works Best

• Existing I-Line panelboards
• Commercial buildings
• Industrial facilities
• Manufacturing plants
• Electrical distribution equipment
• HVAC and refrigeration systems requiring HACR Type protection
• Maintenance and repair projects involving legacy electrical equipment
• Applications requiring a form, fit, and functional replacement
• 60Hz electrical distribution systems