LGB3B070B - 70Amp Circuit Breaker

LGB3B070B - 70Amp Circuit Breaker

The LGB3B070B is a 70A, 3-pole LGB G-frame circuit breaker intended for compatible low-voltage panelboard applications. It uses a thermal-magnetic trip unit and carries interrupting ratings of 65 kA at 480Y/277V and 14 kA at 600Y/347V. If you're trying to match a breaker in existing electrical equipment, that's where the identification process begins—not where it ends. A proper match also means checking the LGB frame, three-pole configuration, load-side terminals, conductor range, and physical dimensions. For maintaining existing or legacy panelboards, the full specification set gives you a much clearer basis for determining form, fit, and function than relying on the 70A rating alone.

Key Features and Benefits

• 70A, 3-pole configuration for compatible low-voltage panelboard applications
• LGB G-frame design provides a clear frame reference when identifying a breaker for existing equipment
• Thermal-magnetic trip unit provides the specified overload and short-circuit protection
• UL Listed LGB frame
• Equipped with TC1GG20 load-side lugs only
• Accepts 8–1/0 AWG copper or aluminum (Cu/Al) conductors
• Well suited to maintenance and functional replacement applications where the equipment requires this specific LGB3B070B configuration

Technical Specifications

• Catalog Number: LGB3B070B
  
• Article Number: US2\:LGB3B070B
  
• Product Type: Low-Voltage Panelboard-Mount Circuit Breaker
  
• Frame: LGB / G Frame
  
• Ampere Rating: 70A
  
• 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: 887621220303
  
• 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 associated with the LGB3B070B also references WEEE (2012/19/EU) take-back obligations and provides information related to REACH Article 33.

Where It Works Best

The LGB3B070B 70A 3-pole circuit breaker is a strong candidate for existing and legacy low-voltage panelboards that require this LGB G-frame configuration. In this type of maintenance work, compatibility is about the complete breaker—not just matching a familiar catalog family or amp rating.