FB3100L - 100Amp Circuit Breaker

FB3100L - 100Amp Circuit Breaker

Keeping existing electrical equipment in service often comes down to finding the right replacement breaker. The FB3100L is a 100 Amp, 3-pole FB thermal-magnetic circuit breaker intended as a form, fit, and functional replacement for compatible legacy electrical distribution systems. Its electrical ratings and physical dimensions make it a practical choice for maintenance, repairs, and planned equipment servicing where preserving the original system configuration is important. Whether you're replacing a worn component during preventative maintenance or restoring power after a breaker failure, the FB3100L helps keep compatible equipment operating as intended.

Key Features and Benefits

• Form, fit, and functional replacement for compatible FB electrical systems
• 100 Amp, 3-pole thermal-magnetic circuit breaker
• Thermal trip helps protect against prolonged overload conditions
• Magnetic trip provides fast response to short-circuit faults
• Non-interchangeable trip unit with factory-established trip settings
• Interrupting ratings of 14kA at 480VAC and 25kA at 240VAC
• Rated for operation in ambient temperatures up to 40°C
• Includes line-side and load-side terminals for installation convenience

Technical Specifications

• Part Number: FB3100L
  
• Type: FB
  
• Circuit Breaker Type: Thermal-Magnetic
  
• Amperage: 100 Amps
  
• Poles: 3
  
• Interrupting Rating: 14kA @ 480VAC; 25kA @ 240VAC
  
• Trip Unit: Non-Interchangeable
  
• Ambient Rating: 40°C
  
• Line-Side Terminals: Included
  
• Load-Side 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 FB3100L. 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 FB3100L is intended for use in compatible FB panelboards and electrical distribution equipment found in commercial buildings, manufacturing plants, warehouses, institutional facilities, and other industrial environments. It is commonly used to protect three-phase branch circuits supplying motors, HVAC systems, pumps, compressors, lighting circuits, and general power distribution where maintaining compatibility with existing legacy equipment is the primary goal.