LGB3B020B - 20Amp Circuit Breaker

LGB3B020B - 20Amp Circuit Breaker

Matching a breaker in your existing panelboard can get very specific, very quickly. The LGB3B020B is a 20A, 3-pole LGB G-frame circuit breaker with a thermal-magnetic trip unit, designed for compatible low-voltage panelboard applications. Its interrupting ratings are 65 kA at 480Y/277V and 14 kA at 600Y/347V. For someone replacing an existing breaker, those ratings matter, but so do the easy-to-miss details: the three-pole arrangement, LGB frame, lug type, accepted conductor sizes, and breaker dimensions.

Key Features and Benefits

• 20A, 3-pole configuration for compatible low-voltage panelboards
• LGB G-frame design provides a specific frame reference for matching existing electrical equipment
• Thermal-magnetic trip unit provides the specified overload and short-circuit protection
• UL Listed LGB frame
• Equipped with TC1Q1 load-side lugs only
• Accepts 14–10 AWG copper or aluminum conductors
• Appropriate for maintenance and functional replacement applications where this specific LGB3B020B configuration is required

Technical Specifications

• Catalog Number: LGB3B020B
  
• Article Number: US2\:LGB3B020B
  
• Product Type: Low-Voltage Panelboard-Mount Circuit Breaker
  
• Frame: LGB / G Frame
  
• Ampere Rating: 20A
  
• 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: TC1Q1
  
• Wire Range: 14–10 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: 887621220228
  
• Commodity Code: 8536200020
  
• Export Classification: ECCN EAR99 / AL N
  
• Dangerous Goods: No
  

Material Compliance and Certifications

The supplied manufacturer data identifies the LGB frame as UL Listed. Environmental information for the LGB3B020B also references WEEE (2012/19/EU) take-back obligations and includes information associated with REACH Article 33.

Where It Works Best

The LGB3B020B 20A 3-pole circuit breaker is most relevant when maintaining existing and legacy low-voltage panelboards that require this specific LGB G-frame arrangement. Rather than starting with appearance, work through the specifications. It's a more useful way to determine whether the breaker belongs in the application.