FAL34040 - 40 Amp Circuit Breaker

FAL34040 - 40 Amp Circuit Breaker

When your breaker includes a factory-installed accessory like a shunt trip, finding the correct replacement is especially important. The Square D FAL34040 is a 40-amp, 3-pole FA Series molded case circuit breaker with a shunt trip designed for compatible 480V electrical systems where remote breaker operation is part of the original setup.

This breaker combines standard FA Series thermal-magnetic protection with the added functionality of a shunt trip mechanism. The thermal element responds to overload conditions that build over time, while the magnetic element trips quickly during short-circuit events. The factory-installed shunt trip allows the breaker to be opened remotely through an external control signal, making it useful in systems that require emergency shutdown or remote disconnect capability.

Key Features and Benefits

• 40 Amp FA Series molded case circuit breaker
• Three-pole configuration for compatible three-phase applications
• Factory-installed shunt trip for remote breaker operation
• Thermal-magnetic trip unit provides overload and short-circuit protection
• Unit-mount design for compatible FA Series equipment
• AL100FA terminal configuration
• Line and load lug connections
• HACR rated for qualifying HVAC and refrigeration applications
• 480V class breaker
• Helps maintain existing equipment without unnecessary system changes
• Built to last for commercial and industrial service applications

Technical Specifications

• Catalog Number: FAL34040
  
• Manufacturer: Square D
  
• Series: FA
  
• Product Type: Molded Case Circuit Breaker with Shunt Trip
  
• Current Rating: 40 Amps
  
• Number of Poles: 3
  
• Voltage Rating: 480 VAC
  
• Trip Unit Technology: Thermal-Magnetic
  
• Shunt Trip: Factory Installed
  
• Breaking Capacity Code: A
  
• Interrupting Rating:
  • 18 kA at 480 VAC
  • 25 kA at 240 VAC
  • 10 kA at 250 VDC
• Mounting Style: Unit Mount
  
• Terminal Identifier: AL100FA
  
• Electrical Connections:
  • Line Lugs
  • Load Lugs
• Phase Connection: ABC
  
• Magnetic Hold Current: 400 A
  
• Magnetic Trip Current: 850 A
  
• Application Rating: HACR
  
• Dimensions:
  • Height: 6.4 in.
  • Width: 4.5 in.
  • Depth: 4.13 in.

Material Compliance and Certifications

The FAL34040 is UL Listed and CSA Certified for use in applicable molded-case circuit breaker installations. It is also HACR rated for qualifying HVAC-related applications. Before replacing an existing breaker, confirm that the amperage, voltage rating, pole configuration, mounting style, terminal arrangement, and shunt-trip requirements match those of the equipment being serviced. Installation should be performed according to the National Electrical Code (NEC) and applicable local electrical requirements.

Where It Works Best

• Commercial electrical distribution equipment
• Industrial facilities
• Manufacturing systems
• HVAC and refrigeration equipment
• Three-phase branch circuits
• Existing FA Series panelboards and compatible electrical equipment
• Applications requiring remote breaker tripping through a shunt trip accessory