FB2040L - 40Amp Circuit Breaker

FB2040L - 40Amp Circuit Breaker

When a breaker in an existing electrical system needs to be replaced, finding one with the right ratings and physical configuration matters just as much as the amperage. The FB2040L is a 40 Amp, 2-pole FB thermal-magnetic circuit breaker built for applications where maintaining the original form, fit, and function is essential.

You'll commonly find the FB2040L protecting lighting systems, HVAC equipment, pumps, motors, and other branch circuits in commercial buildings, manufacturing facilities, schools, healthcare facilities, and similar environments.

Key Features and Benefits

• Provides 40 Amp circuit protection
• Two-pole design for compatible FB applications
• Thermal-magnetic protection against overloads and short circuits
• Non-interchangeable factory-installed trip unit
• Rated for operation in 40°C ambient temperatures
• Includes both line-side and load-side terminals
• Form, fit, and functional replacement for compatible FB equipment
• Built to last for continued service in existing electrical systems

Technical Specifications

• Part Number: FB2040L
  
• Type: FB
  
• Product Type: Thermal-Magnetic Circuit Breaker
  
• Amperage: 40 Amps
  
• Poles: 2
  
• Interrupt Rating: 14kA @ 480VAC; 25kA @ 240VAC
  
• Ambient Rating: 40°C
  
• Trip Unit: Non-Interchangeable
  
• Terminals: Line-side and load-side terminals included
  
• Dimensions:
  • Height: 6.00 in.
  • Width: 2.75 in.
  • Depth: 3.38 in.
• Dimensions: 2.75 in. W × 6.00 in. H × 3.38 in. D
  
• Approximate Shipping Weight: 4.00 lbs.
  

Material Compliance and Certifications

No specific material compliance information or third-party certifications has been provided for the FB2040L. Installation should be completed by a qualified electrician in accordance with the National Electrical Code (NEC), local electrical codes, and the original equipment manufacturer's requirements.

Where It Works Best

The FB2040L is commonly used in commercial, industrial, and institutional facilities where compatible FB-series equipment remains in service. It works well for branch circuits serving lighting systems, HVAC equipment, motors, pumps, machinery, and general power distribution.