EJB24110 - 110 Amp Circuit Breaker

EJB24110 - 110 Amp Circuit Breaker

When your dependable circuit protection matters, the Square D EJB24110 delivers the performance professionals expect. This 110 Amp, 2-pole E-Frame circuit breaker is designed for use in compatible Square D NF panelboards, providing reliable protection against overloads and short circuits in commercial and industrial electrical systems.

Built with a thermal-magnetic trip mechanism, the EJB24110 responds to both prolonged overload conditions and sudden fault currents, helping protect connected equipment while keeping electrical systems operating safely.

With support for operating voltages up to 480Y/277V AC and interrupting ratings as high as 100 kA on applicable voltage systems, this breaker is well suited for demanding electrical applications.

Key Features and Benefits

• 110 Amp current rating
• Two-pole configuration for multi-wire circuit protection
• Bolt-on mounting for compatible Square D NF panelboards
• Thermal-magnetic trip unit provides dependable overload and short-circuit protection
• Built-in trip indicator simplifies fault identification and troubleshooting
• Rated for systems up to 480Y/277V AC
• Interrupting ratings up to 100 kA on applicable voltage systems
• HACR rated for qualifying HVAC and refrigeration equipment
• Accepts both copper and aluminum conductors

Technical Specifications

• Manufacturer: Square D
  
• Catalog Number: EJB24110
  
• Series: EDB / EGB / EJB 125A Frame
  
• Frame Type: E-Frame
  
• Product Type: Thermal-Magnetic Circuit Breaker
  
• Current Rating: 110 Amps
  
• Poles: 2
  
• Maximum Operating Voltage: 480Y/277V AC
  
• Mounting Style: Bolt-On
  
• Panel Compatibility: Square D NF Panelboards
  
• Trip Unit Technology: Thermal-Magnetic
  
• Protection: Overload and Short Circuit
  
• Trip Indicator: Yes
  
• Holding Current: 1000 Amps
  
• Trip Current: 2300 Amps
  
• Breaking Capacity:
  • 100 kA @ 120V AC
  • 100 kA @ 120/240V AC
  • 100 kA @ 240V AC
  • 65 kA @ 277V AC
  • 65 kA @ 480Y/277V AC
• Wire Range:
  • Copper: AWG 14–2/0
  • Aluminum: AWG 12–2/0
• Terminal Type: Aluminum Lugs
  
• Tightening 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
• Number of Spaces Required: 2
  
• Calibration Temperature: 40°C (104°F)
  
• Dimensions:
  • Height: 5.66 in H
  • Width: 1.96 in W
  • Depth: 4.05 in D
• Weight: 3 lb
  
• Country of Origin: Mexico
  
• Warranty: 18 Months
  

Material Compliance and Certifications

The Square D EJB24110 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. Installation should be performed by qualified electrical personnel in accordance with the National Electrical Code (NEC), applicable local electrical codes, and all required safety standards.

Where It Works Best

• Square D NF panelboards
• Commercial lighting panelboards
• 480Y/277V AC branch circuits
• Office buildings
• Manufacturing facilities
• Healthcare facilities
• Educational campuses
• Retail stores and shopping centers
• Warehouses and distribution centers
• HVAC and refrigeration systems
• Electrical service upgrades and modernization projects
• Maintenance and replacement applications requiring a bolt-on E-Frame breaker