EDB14040 - 40 Amp Circuit Breaker

EDB14040 - 40 Amp Circuit Breaker

The Square D EDB14040 is a 40 Amp, 1-pole E-Frame thermal magnetic circuit breaker engineered to deliver dependable overload and short-circuit protection in Square D NF lighting panelboards. Designed for commercial electrical distribution systems, this breaker combines proven performance with a secure bolt-on mounting design that helps maintain a reliable electrical connection over years of service. Whether you're replacing an existing EDB-series breaker or performing scheduled panel maintenance, the EDB14040 offers the compatibility and protection professionals expect from Square D equipment.

Built for 277V AC branch circuits, the EDB14040 is well suited for commercial lighting systems, HVAC equipment, and other critical electrical loads that require consistent circuit protection.

Key Features and Benefits

• 40 Amp, single-pole circuit breaker for Square D NF lighting panelboards
• Secure bolt-on installation for dependable mechanical and electrical connection
• Thermal magnetic trip unit provides protection against overloads and short circuits
• Rated for 277V AC commercial branch circuit applications
• 25 kA interrupting capacity at 120V AC for enhanced fault protection
• Built-in trip indicator simplifies troubleshooting after a fault
• HID rated for high-intensity discharge lighting applications
• HACR rated for heating, air conditioning, and refrigeration equipment
• Occupies a single panel space for easy replacement in compatible panelboards
• Designed for reliable long-term performance in commercial and industrial environments
  

Technical Specifications

• Catalog Number: EDB14040
  
• Manufacturer: Square D by Schneider Electric
  
• Product Type: Miniature Circuit Breaker
  
• Series: E-Frame (EDB)
  
• Frame Size: 125 Amp Frame
  
• Rated Current: 40 Amps
  
• Maximum Operating Voltage: 277V AC
  
• Number of Poles: 1
  
• Number of Spaces Required: 1
  
• Mounting Style: Bolt-On
  
• Compatible Panelboards: Square D NF Panelboards
  
• Trip Unit Technology: Thermal Magnetic
  
• Trip Unit Rating: 1800 Amps
  
• Holding Current: 630 Amps
  
• Protection Type: Overload and Short Circuit
  
• Interrupting Capacity:
  • 25 kA @ 120V AC
  • 18 kA @ 120/240V AC
  • 18 kA @ 240V AC
  • 18 kA @ 277V AC
• Electrical Connections: Aluminum lugs
  
• Accepted Wire Sizes:
  • Copper: AWG 14–2/0
  • Aluminum: AWG 12–2/0
• 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
• Calibration Temperature: 40°C (104°F)
  
• Dimensions:
  • Height: 5.66 in.
  • Width: 0.98 in.
  • Depth: 4.05 in.
• Weight: 2 lb (0.9 kg)
  

Material Compliance and Certifications

The Square D EDB14040 is cULus Listed and IEC certified, demonstrating compliance with recognized electrical safety and performance standards. It is also HID Listed and HACR rated, making it suitable for applications involving high-intensity discharge lighting and HVAC systems. Additionally, this breaker is TAA-compliant and factory-calibrated for operation at ambient temperatures up to 40°C (104°F). For optimal performance and safety, installation should always be completed by qualified personnel in accordance with applicable national and local electrical codes.

• cULus Listed
• IEC Certified
• HID Listed
• HACR Rated
• TAA Compliant
  

Where It Works Best

• Square D NF lighting panelboards
• Commercial lighting branch circuits operating at 277V AC
• Office buildings, schools, healthcare facilities, and retail centers
• Manufacturing plants and warehouse electrical distribution systems
• High-intensity discharge (HID) lighting installations
• Heating, air conditioning, and refrigeration (HACR) applications
• Commercial and industrial branch circuit protection
• Replacement of compatible Square D EDB-series bolt-on circuit breakers
• Preventive maintenance, panel upgrades, and facility modernization