EGB34125 - 125 Amp Circuit Breaker

EGB34125 - 125 Amp Circuit Breaker

When your electrical system requires dependable circuit protection for higher-capacity applications, the EGB34125 125 Amp 3-pole circuit breaker is built to help keep your operation running safely and efficiently. Designed specifically for use in compatible NF panelboards, this E-Frame breaker provides the proper form, fit, and function for maintaining existing electrical systems. Its secure bolt-on mounting helps ensure a stable installation, while the integrated trip indicator provides maintenance personnel with a quick visual indication when the breaker has tripped, speeding troubleshooting and minimizing downtime. Equipped with a thermal-magnetic trip unit, the EGB34125 responds to both sustained overload conditions and sudden short-circuit faults, helping protect connected equipment and branch circuits from electrical damage. Rated at 125 Amps with a maximum operating voltage of 480Y/277 VAC, it offers interrupting capacities of up to 65 kA at select voltage ratings, making it well-suited for a wide range of commercial, institutional, and industrial applications. The breaker also accepts both copper and aluminum conductors, providing flexibility during installation or replacement. Built to provide dependable, long-lasting service, the EGB34125 is an excellent choice for electricians, contractors, and facility managers who need a reliable replacement breaker for compatible NF panelboard installations.

Key Features and Benefits

• 125 Amp continuous current rating: For higher-capacity three-phase branch circuits.
• 3-pole configuration: For compatible three-phase electrical systems.
• Bolt-on mounting: Provides a secure installation in compatible NF panelboards.
• Thermal-magnetic trip unit: Helps protect against overloads and short circuits.
• Built-in trip indicator: Offers quick visual identification after a trip event.
• HACR rated: For compatible heating, air conditioning, and refrigeration equipment.
• Compatible with both copper and aluminum conductors.
• Built to provide dependable, long-lasting service: In commercial and industrial electrical systems.
  

Technical Specifications

• Catalog Number: EGB34125
  
• Series: EGB E-Frame
  
• Product Type: Miniature Circuit Breaker
  
• Rated Current: 125 Amps
  
• Number of Poles: 3
  
• Maximum Operating Voltage: 480Y/277 VAC
  
• Mounting Style: Bolt-On
  
• Trip Unit Technology: Thermal-Magnetic
  
• Trip Unit Rating: 2300A
  
• Holding Current: 1000A
  
• Protection Functions: Overload and Short-Circuit
  
• Interrupting Ratings:
  • 65kA @ 120 VAC
  • 65kA @ 120/240 VAC
  • 65kA @ 240 VAC
  • 35kA @ 277 VAC
  • 35kA @ 480Y/277 VAC
• Electrical Connections: Aluminum lugs
  
• Compatible Wire Sizes:
  • Aluminum: AWG 12–2/0
  • Copper: AWG 14–2/0
• Terminal Torque:
  • 34.5 lb-in (3.9 N·m) for AWG 14–10
  • 49.6 lb-in (5.6 N·m) for AWG 8–2/0
• Dimensions: 5.66 in. H × 2.94 in. W × 4.05 in. D
  
• Weight: Approximately 4 lbs.
  
• Calibration Temperature: 40°C (104°F)
  

Material Compliance and Certifications

• cULus Listed
• HACR Rated
• TAA Compliant
• Calibrated for operation in ambient temperatures up to 104°F (40°C)
  

Where It Works Best

• Commercial office buildings
• Manufacturing and industrial facilities
• Healthcare facilities
• Schools and universities
• Retail stores and shopping centers
• Warehouses and distribution centers
• HVAC equipment and mechanical systems
• Three-phase power distribution systems
• Maintenance, repair, and replacement of existing NF panelboard installations