HGB3B045B - 45Amp Circuit Breaker

HGB3B045B - 45Amp Circuit Breaker

When you’re replacing a breaker, the small details matter just as much as the amp rating. The HGB3B045B is a 45A, 3-pole HGB G-frame circuit breaker made for compatible low-voltage panelboard applications. It uses a straightforward thermal-magnetic trip unit for overload and short-circuit protection, with interrupting ratings of 14 kAIC at 600Y/347V and 35 kAIC at 480Y/277V.

Key Features and Benefits

• 45-amp rating: Sized for circuits and equipment requiring a 45A breaker.
• Three-pole configuration: Provides three-pole protection in compatible panelboard systems.
• Thermal-magnetic trip: A proven design that responds to both overloads and short circuits.
• Load-side lug design: Equipped with TC1GG20 lugs for the specified load connection.
• Flexible conductor range: Accepts 8 AWG to 1/0 AWG copper or aluminum wire.
• Space-conscious G-frame size: The 3 x 5.4 x 2.8-inch dimensions make it easier to check fit in existing compatible equipment.
  

Technical Specifications

• Catalog Number: HGB3B045B
  
• Breaker Type: Low-voltage panelboard circuit breaker
  
• Frame: HGB G-Frame
  
• Amperage: 45A
  
• Poles: 3
  
• Trip Technology: Thermal-Magnetic
  
• Interrupting Capacity at 600Y/347V: 14 kAIC
  
• Interrupting Capacity at 480Y/277V: 35 kAIC
  
• Connection: Load-side lugs only
  
• Lug Type: TC1GG20
  
• Accepted Wire Size: 8 AWG to 1/0 AWG
  
• Conductor Material: Copper or Aluminum (Cu/Al)
  
• Width: 3 in.
  
• Height: 5.4 in.
  
• Depth: 2.8 in.
  
• Net Weight: 2.756 lb.
  
• UPC: 887621219826
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The HGB3B045B is UL Listed, an important point to verify when selecting electrical protection equipment for a specific panelboard or installation.

Available manufacturer data identifies an ECCN classification of EAR99 / AL N and states that the breaker is not classified as dangerous goods.

Where It Works Best

The HGB3B045B makes the most sense in compatible low-voltage panelboards and commercial or industrial electrical distribution equipment where a 45A, three-pole HGB G-frame breaker is specified. Its thermal-magnetic trip makes it a practical choice for applications requiring conventional overload and short-circuit protection.