FB3050L - 50Amp Circuit Breaker

FB3050L - 50Amp Circuit Breaker

Electrical maintenance often comes down to installing the right replacement the first time. The FB3050L is a 50 Amp, 3-pole FB thermal-magnetic circuit breaker intended as a form, fit, and functional replacement for compatible legacy electrical distribution equipment. Whether you're replacing a failed breaker during an unexpected outage or performing preventive maintenance to keep an existing system operating reliably, using a breaker that matches the original equipment helps maintain compatibility and minimizes unnecessary modifications.

Key Features and Benefits

• Form, fit, and functional replacement for compatible FB electrical distribution equipment
• 50 Amp, 3-pole thermal-magnetic circuit breaker
• Thermal trip helps protect against prolonged overload conditions
• Magnetic trip responds rapidly to short-circuit faults
• Factory-installed non-interchangeable trip unit
• Rated for operation in ambient temperatures up to 40°C
• Includes both line-side and load-side terminals
• Built to last for continued service in compatible legacy electrical systems

Technical Specifications

• Part Number: FB3050L
  
• 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
  
• 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 FB3050L. Before installation, verify that the breaker's electrical ratings, pole configuration, dimensions, terminal arrangement, and mounting requirements 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 FB3050L is commonly used in compatible FB panelboards and electrical distribution equipment found in commercial buildings, industrial facilities, warehouses, institutional properties, and other locations that continue to rely on legacy electrical infrastructure. It is well suited for protecting three-phase branch circuits serving motors, HVAC equipment, pumps, compressors, lighting systems, and general power distribution applications where maintaining the original equipment configuration is the priority.