EGB34090 - 90 Amp Circuit Breaker

EGB34090 - 90 Amp Circuit Breaker

The EGB34090 90-Amp, 3-pole bolt-on circuit breaker is engineered to provide dependable circuit protection for commercial and industrial electrical distribution systems when used with compatible NF panelboards. Designed to deliver consistent performance under demanding operating conditions, this E-Frame circuit breaker combines a proven thermal-magnetic trip unit with a secure bolt-on installation, making it an excellent choice for equipment maintenance, panel upgrades, and replacement applications. Whether you're protecting branch circuits in office buildings, manufacturing facilities, schools, or HVAC systems, the EGB34090 offers the reliability professionals expect. Its integrated trip indicator allows maintenance personnel to quickly identify a tripped breaker, helping reduce troubleshooting time and restore service more efficiently.

Key Features and Benefits

• 90 Amp continuous current rating: For higher-capacity branch circuit protection.
• 3-pole configuration: Designed for three-phase electrical systems.
• Bolt-on mounting: Provides a secure, stable installation in compatible NF panelboards.
• Thermal-magnetic trip technology: Delivers dependable overload and short-circuit protection.
• Integrated trip indicator: Simplifies diagnostics and maintenance.
• HACR rated: For compatible heating, air conditioning, and refrigeration applications.
• Accepts both copper and aluminum conductors.
• Built for dependable long-term performance: In commercial and industrial environments.
  

Technical Specifications

• Catalog Number: EGB34090
  
• Series: EGB E-Frame
  
• Product Type: Miniature Circuit Breaker
  
• Rated Current: 90 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 processing facilities
• Schools and universities
• Healthcare facilities
• Retail centers
• Warehouses and distribution centers
• HVAC equipment and mechanical systems
• Three-phase branch circuit protection
• Electrical maintenance and panel modernization projects