F3040 - 40Amp Circuit Breaker

F3040 - 40 Amp Circuit Breaker

When you need a breaker that fits your existing setup without creating new headaches, the F3040 circuit breaker is a straightforward solution. Built for 40 amp, 3-pole applications, this thermal-magnetic breaker is designed to handle everyday electrical protection—tripping when circuits are overloaded or shorted, just like it’s supposed to. Its F-frame design helps ensure it lines up with the equipment it was originally paired with, which is key when you’re maintaining older systems or replacing a worn unit. With a 14k A.I.C. rating at 480VAC and a 40°C calibration, it’s suited for common commercial and industrial environments. The included load terminals are a practical touch, helping reduce install time and get your system back up and running with less hassle.

Key Features and Benefits

• 40 amp, 3-pole configuration for three-phase system protection
• The thermal-magnetic trip mechanism responds to overloads and short circuits
• F-frame design supports proper fit in compatible panels and switchgear
• Non-interchangeable trip unit keeps protection settings consistent
• Rated for 40°C ambient conditions
• Load terminals included for easier installation
• Built for dependable, long-term use in working environments

Technical Specifications

• Catalog Number: F3040
  
• Amperes: 40A
  
• Poles: 3
  
• Voltage Rating: 480VAC
  
• A.I.C. Rating: 14kA @ 480VAC
  
• Frame Type: F-Frame
  
• Trip Type: Thermal-Magnetic (non-interchangeable)
  
• Temperature Rating: 40°C
  
• Dimensions:
  • Height: 6.0 in
  • Width: 4.13 in
  • Depth: 3.38 in

Material Compliance and Certifications

• Meets commonly accepted electrical performance standards
• Suitable for installations following UL and NEC requirements (as applicable)
• Designed for use in properly rated electrical distribution equipment

Where It Works Best

• You’ll typically see the F3040 in panelboards, switchboards, and control panels across commercial buildings and industrial facilities. It’s a good fit when replacing an existing breaker where matching the original form, fit, and function is important. Whether it’s part of a maintenance project or keeping older gear in service, this breaker helps maintain consistency without introducing unnecessary changes.