FB3040L - 40Amp Circuit Breaker

FB3040L - 40Amp Circuit Breaker

Replacing your breaker shouldn't mean reworking an entire electrical system. In many facilities, the priority is simply finding a replacement that matches the original equipment so the panel can be returned to service with minimal disruption. That's where the FB3040L comes in. This 40 Amp, 3-pole FB thermal-magnetic circuit breaker is intended as a form, fit, and functional replacement for compatible legacy electrical distribution equipment used in commercial and industrial applications.

Key Features and Benefits

• Form, fit, and functional replacement for compatible FB electrical distribution systems
• 40 Amp, 3-pole thermal-magnetic circuit breaker
• Thermal trip element helps protect against sustained overload conditions
• Magnetic trip element responds quickly to short-circuit faults
• Factory-installed non-interchangeable trip unit
• Interrupting ratings of 14kA at 480VAC and 25kA at 240VAC
• Rated for operation in ambient temperatures up to 40°C
• Includes both line and load-side terminals

Technical Specifications

• Part Number: FB3040L
  
• Type: FB
  
• Circuit Breaker Type: Thermal-Magnetic
  
• Amperage: 40 Amps
  
• Poles: 3
  
• Interrupting Rating: 14kA @ 480VAC; 25kA @ 240VAC
  
• Trip Unit: Non-Interchangeable
  
• Ambient Rating: 40°C
  
• Line Terminals: Included
  
• Load Terminals: Included
  
• Dimensions:
  • Height: 6.00"
  • Width: 4.13"
  • Depth: 3.38"
• Dimensions: 4.13"W × 6.00"H × 3.38"D
  
• Approximate Shipping Weight: 5.50 lbs.
  

Material Compliance and Certifications

No material compliance or certification information has been provided for the FB3040L. Before installation, verify that the breaker's electrical ratings, pole configuration, physical dimensions, and terminal arrangement are compatible with the equipment being serviced. Installation should be performed by a qualified electrician in accordance with the National Electrical Code (NEC), applicable local electrical codes, and the original equipment manufacturer's recommendations.

Where It Works Best

The FB3040L is commonly used in compatible FB panelboards and electrical distribution equipment found in manufacturing plants, commercial buildings, warehouses, institutional facilities, and other locations with legacy electrical infrastructure. It is well suited for three-phase branch circuits supplying HVAC equipment, motors, pumps, compressors, lighting systems, and general power distribution where maintaining the original equipment configuration is the primary objective.