FB3090L - 90Amp Circuit Breaker

FB3090L - 90Amp Circuit Breaker

Electrical maintenance often comes down to finding the right replacement the first time. The FB3090L is a 90 Amp, 3-pole FB thermal-magnetic circuit breaker built as a form, fit, and functional replacement for compatible legacy electrical distribution systems. Its ratings and physical configuration make it well suited for keeping existing equipment in service without changing the original design. Whether you're replacing a failed breaker during scheduled maintenance or restoring power after troubleshooting, the FB3090L provides dependable circuit protection while maintaining compatibility with the equipment it was built to support.

Key Features and Benefits

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

Technical Specifications

• Part Number: FB3090L
  
• Type: FB
  
• Circuit Breaker Type: Thermal-Magnetic
  
• Amperage: 90 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 FB3090L. Before installation, verify that the circuit breaker's electrical ratings, physical dimensions, mounting configuration, terminal arrangement, and application requirements match the equipment being serviced. Installation should be completed 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 FB3090L is well suited for compatible FB panelboards and electrical distribution equipment found in commercial facilities, manufacturing plants, warehouses, institutional buildings, and other industrial environments. It is commonly used to protect three-phase branch circuits serving motors, HVAC equipment, pumps, compressors, lighting systems, and general power distribution where maintaining compatibility with existing equipment is a priority.