LGB3B090B - 90Amp Circuit Breaker

LGB3B090B - 90Amp Circuit Breaker

A catalog-number match can make all the difference when you're maintaining an existing electrical panelboard. The LGB3B090B is a 90A, 3-pole LGB G-frame circuit breaker for compatible low-voltage panelboard applications. It combines a thermal-magnetic trip unit with interrupting ratings of 65 kA at 480Y/277V and 14 kA at 600Y/347V. Still, amperage and interrupting capacity only tell part of the story. The breaker position must also accommodate the three-pole LGB frame, specified terminal arrangement, conductor range, and physical dimensions. Checking these characteristics together is particularly important with existing and legacy equipment, where the objective is to identify a breaker with the correct form, fit, and function.

Key Features and Benefits

• 90A, 3-pole circuit breaker for compatible low-voltage panelboard applications
• LGB G-frame configuration helps identify the required frame and physical arrangement for existing equipment
• Thermal-magnetic trip unit provides the specified overload and short-circuit protection
• UL Listed LGB frame
• Uses TC1GG20 load-side lugs only
• Accommodates 8–1/0 AWG copper or aluminum (Cu/Al) conductors
• Appropriate for maintenance and functional replacement applications when existing equipment requires the specific LGB3B090B configuration

Technical Specifications

• Catalog Number: LGB3B090B
  
• Article Number: US2\:LGB3B090B
  
• Product Type: Low-Voltage Panelboard-Mount Circuit Breaker
  
• Frame: LGB / G Frame
  
• Ampere Rating: 90A
  
• Number of Poles: 3
  
• Trip Type: Thermal-Magnetic
  
• Interrupting Rating at 480Y/277V: 65 kA
  
• Interrupting Rating at 600Y/347V: 14 kA
  
• Terminal Arrangement: Load-Side Lugs Only
  
• Load Lug Type: TC1GG20
  
• Wire Range: 8–1/0 AWG
  
• Conductor Compatibility: Copper / Aluminum (Cu/Al)
  
• Dimensions: 3"W x 5.4"H x 2.8"D
  
• Net Weight: 2.756 lb
  
• Country of Origin: Mexico
  
• UPC: 887621220327
  
• Commodity Code: 8536200020
  
• Export Classification: ECCN EAR99 / AL N
  
• Dangerous Goods: No
  

Material Compliance and Certifications

The supplied manufacturer specifications identify the LGB frame as UL Listed. Environmental information for the LGB3B090B also references WEEE (2012/19/EU) take-back obligations and includes information associated with REACH Article 33.

Where It Works Best

The LGB3B090B 90A 3-pole circuit breaker is intended for existing and legacy low-voltage panelboards that require this specific LGB G-frame configuration. It's especially relevant when maintenance work requires preserving the breaker's electrical and physical characteristics rather than changing the equipment configuration.