EJB34110 - 110 Amp Circuit Breaker

EJB34110 - 110 Amp Circuit Breaker

The Square D EJB34110 is a 110 Amp, 3-pole thermal-magnetic circuit breaker used in compatible Square D NF panelboards. It's commonly selected when you're replacing an existing EJB-series breaker with the same amperage, pole configuration, and voltage rating, helping keep the panel exactly as it was originally designed. That makes it a practical choice for maintenance work, repairs, and equipment upgrades where matching the existing breaker is important.

Key Features and Benefits

• 110 Amp current rating
• Three-pole circuit breaker for three-phase electrical systems
• Bolt-on mounting for compatible Square D NF panelboards
• Thermal-magnetic trip protection against overloads and short circuits
• Built-in trip indicator for faster fault identification
• Rated for 480Y/277V AC systems
• Interrupting capacity up to 100 kA at applicable voltage ratings

Technical Specifications

• Manufacturer: Square D
  
• Catalog Number: EJB34110
  
• Product Type: Thermal-Magnetic Circuit Breaker
  
• Series: EDB / EGB / EJB 125 Amp Frame
  
• Frame Type: E-Frame
  
• Amperage Rating: 110 Amps
  
• Voltage Rating: 480Y/277V AC
  
• Number of Poles: 3
  
• Mounting Style: Bolt-On
  
• Compatible Panelboards: Square D NF
  
• Trip Unit Technology: Thermal-Magnetic
  
• Trip Unit Rating: 2,300 A
  
• Holding Current: 1,000 A
  
• Protection Type: Overload and Short Circuit
  
• Interrupting Ratings:
  • 100 kA @ 120V AC
  • 100 kA @ 120/240V AC
  • 100 kA @ 240V AC
  • 65 kA @ 277V AC
  • 65 kA @ 480Y/277V AC
• Electrical Connections: Lugs
  
• Wire Range:
  • Copper: 14 AWG–2/0 AWG
  • Aluminum: 12 AWG–2/0 AWG
• Tightening Torque:
  • 34.5 lb-in (14–10 AWG)
  • 49.6 lb-in (8 AWG–2/0 AWG)
• Dimensions:
  • Height: 5.66 in. H
  • Width: 2.94 in. W
  • Depth: 4.05 in. D
• Weight: Approximately 4 lbs.
  

Material Compliance and Certifications

The Square D EJB34110 is cULus Listed, HACR-rated, and TAA-compliant. It is calibrated for operation in ambient temperatures up to 40°C (104°F) and is intended for installation in compatible Square D NF panelboards.

Where It Works Best

• Square D NF panelboards
• Three-phase branch circuits
• Commercial office buildings
• Manufacturing facilities
• Warehouses and distribution centers
• Schools and universities
• Healthcare facilities