FB3050 - 50Amp Circuit Breaker

FB3050 - 50Amp Circuit Breaker

When your legacy electrical system needs to stay in service, finding the correct replacement breaker is often more important than finding something new. The FB3050 is a 50 Amp, 3-pole FB thermal-magnetic circuit breaker intended as a form, fit, and functional replacement for compatible electrical distribution equipment used in commercial and industrial facilities. Whether you're restoring service after a breaker failure or performing scheduled maintenance, matching the original equipment helps maintain the integrity of the existing installation.

Key Features and Benefits

• Form, fit, and functional replacement for compatible FB electrical distribution systems
• 50 Amp, 3-pole thermal-magnetic circuit breaker
• Thermal trip element helps protect against prolonged overload conditions
• Magnetic trip element responds rapidly 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 load-side terminals
• Built to last for continued service in compatible legacy electrical equipment

Technical Specifications

• Part Number: FB3050
  
• Type: FB
  
• Circuit Breaker Type: Thermal-Magnetic
  
• Amperage: 50 Amps
  
• Poles: 3
  
• Interrupting Rating: 14kA @ 480VAC; 25kA @ 240VAC
  
• Trip Unit: Non-Interchangeable
  
• Ambient Rating: 40°C
  
• 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 FB3050. Before installation, verify that the breaker's electrical ratings, pole configuration, 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 FB3050 is commonly installed in compatible FB panelboards and electrical distribution equipment serving commercial buildings, manufacturing facilities, warehouses, institutional properties, and other sites with legacy electrical infrastructure. It is well suited for protecting three-phase branch circuits supplying motors, HVAC systems, pumps, compressors, lighting panels, and general power distribution where maintaining the original equipment configuration is the primary objective.