EJB14015 - 15 Amp Circuit Breaker

EJB14015 - 15 Amp Circuit Breaker

When you're maintaining or repairing an existing lighting panelboard, using the correct replacement breaker is essential for keeping your electrical system operating as designed. The Square D EJB14015 E-Frame Miniature Circuit Breaker is a 15 Amp, single-pole, bolt-on circuit breaker engineered specifically for compatible NF panelboards. Designed with a thermal-magnetic trip unit, it provides dependable protection against overloads and short circuits and includes a built-in trip indicator to make it easy to identify when the breaker has operated. Whether you're performing scheduled maintenance, replacing a failed breaker, or servicing an existing installation, the EJB14015 delivers the form, fit, and functional compatibility professionals expect for commercial and industrial electrical systems.

Key Features and Benefits

• 15 Amp continuous current rating
• Single-pole (1P) miniature circuit breaker
• Bolt-on mounting for compatible NF panelboards
• Thermal-magnetic trip unit helps protect against overloads and short circuits
• Built-in trip indicator provides quick visual status after a trip event
• Rated for a maximum operating voltage of 277 VAC
• Switching Duty rated
• HACR rated for compatible heating, air conditioning, and refrigeration equipment
• HID rated for compatible high-intensity discharge lighting applications
• Calibrated for operation at 40°C ambient temperature
• Aluminum lug connections accept 12–6 AWG conductors
• Copper lug connections accept 14–6 AWG conductors

Technical Specifications

• Manufacturer: Square D
  
• Catalog Number: EJB14015
  
• Product Type: Miniature Circuit Breaker
  
• Series: 125A Frame EDB / EGB / EJB
  
• Frame Type: E-Frame
  
• Device Type: EJB
  
• Amperage Rating: 15 Amps
  
• Number of Poles: 1
  
• Maximum Operating Voltage: 277 VAC
  
• Trip Unit Technology: Thermal-Magnetic
  
• Trip Unit Rating: 875 A
  
• Holding Current: 270 A
  
• Breaking Capacity:
  • 100 kA at 120 VAC
  • 65 kA at 120/240 VAC
  • 65 kA at 240 VAC
  • 65 kA at 277 VAC
• Mounting Type: Bolt-On
  
• Electrical Connections: Aluminum Lugs
  
• Compatible Wire Size:
  • Aluminum: 12–6 AWG
  • Copper: 14–6 AWG
• Compatible Equipment: NF Panelboards
  
• Local Signaling: Trip Indicator
  
• Calibration Temperature: 40°C (104°F)
  
• Dimensions:
  • Height: 5.66 in.
  • Width: 0.98 in.
  • Depth: 4.05 in.
• Weight: 2.0 lbs.
  

Material Compliance and Certifications

• cULus Listed
• HACR Rated
• Switching Duty Rated
• HID Rated
• TAA Compliant
• Backed by the manufacturer's 18-month warranty

Where It Works Best

The Square D EJB14015 is designed for use in compatible NF lighting panelboards found in commercial, institutional, and industrial facilities. It's an excellent choice for protecting lighting circuits, branch circuits, and other 277 VAC applications that require reliable overload and short-circuit protection. Electricians, maintenance professionals, and facility managers frequently specify this breaker when servicing existing electrical distribution systems because it provides the correct form, fit, and function as a replacement for compatible E-Frame installations while maintaining the performance characteristics the original equipment was designed to deliver.