EJB24015 - 15 Amp Circuit Breaker

EJB24015 - 15 Amp Circuit Breaker

If you're replacing a breaker in a compatible Square D NF panelboard, the Square D EJB24015 offers the form, fit, and electrical ratings needed to get the job done with confidence. This 15 Amp, 2-pole bolt-on circuit breaker uses a thermal-magnetic trip unit to protect branch circuits against overloads and short circuits, helping reduce the risk of equipment damage and unexpected downtime. A built-in trip indicator makes it easy to see when the breaker has operated, so troubleshooting can move along without unnecessary guesswork.

Built for 480Y/277 VAC systems, the EJB24015 is commonly found in commercial buildings, office spaces, schools, healthcare facilities, and other properties that rely on compatible NF panelboards. Its bolt-on mounting keeps the breaker securely in place, while compatibility with both copper and aluminum conductors gives installers added flexibility.

Key Features and Benefits

• Designed for Square D NF panelboards: Provides proper form, fit, and functional replacement compatibility.
• 15 Amp Continuous Current Rating: Protects branch circuits in commercial electrical systems.
• Two-Pole Configuration: For applications requiring protection across two conductors.
• Thermal-Magnetic Trip Mechanism: Responds to both overloads and short circuits.
• Bolt-On Mounting Design: Helps ensure a secure installation within compatible panelboards.
• Trip Indicator: Provides a quick visual reference after the breaker has tripped.
• Compatible Conductors: Accepts copper conductors ranging from 14 AWG–6 AWG and aluminum conductors ranging from 12 AWG–6 AWG.
• HACR and HID Rated: Suitable for compatible HVAC and lighting applications.
• Built to Last: Built to last for long-term service in properly maintained electrical systems.
  

Technical Specifications

• Manufacturer: Square D
  
• Catalog Number: EJB24015
  
• Product Type: E-Frame Miniature Circuit Breaker
  
• Frame Series: 125 A Frame EDB/EGB/EJB
  
• Rated Current: 15 Amps
  
• Number of Poles: 2
  
• Maximum Operating Voltage: 480Y/277 VAC
  
• Mounting Type: Bolt-On
  
• Trip Unit Technology: Thermal-Magnetic
  
• Protection Type: Overload and Short-Circuit
  
• Interrupting Capacity:
  • 100 kA at 120 VAC
  • 100 kA at 120/240 VAC
  • 100 kA at 240 VAC
  • 65 kA at 277 VAC
  • 65 kA at 480Y/277 VAC
• Trip Unit Rating: 875 A
  
• Holding Current: 270 A
  
• Electrical Connections: Aluminum lugs
  
• Compatible Conductors:
  • Copper: 14 AWG–6 AWG
  • Aluminum: 12 AWG–6 AWG
• Number of Spaces Required: 2
  
• Dimensions:
  • Height: 5.66 in.
  • Width: 1.96 in.
  • Depth: 4.05 in.
• Weight: 3 lb (1.4 kg)
  
• Operating Temperature: Up to 104°F (40°C)
  

Material Compliance and Certifications

The Square D EJB24015 is cULus Listed and TAA Compliant, meeting recognized North American safety and compliance requirements. It is also HACR and HID rated, making it suitable for approved heating, air conditioning, refrigeration, and high-intensity discharge lighting applications.

Where It Works Best

The EJB24015 is a practical choice for commercial and institutional facilities using compatible Square D NF panelboards. It's commonly installed in office buildings, schools, healthcare facilities, retail stores, warehouses, and light industrial environments where dependable branch circuit protection is required.