EDB24040 - 40 Amp Circuit Breaker

EDB24040 - 40 Amp Circuit Breaker

When keeping your electrical system running safely is the priority, the Square D EDB24040 is built to deliver dependable protection you can count on. Designed specifically for Square D NF panelboards, this 40 Amp, 2-pole E-Frame circuit breaker helps protect commercial and industrial branch circuits from overloads and short circuits while maintaining the reliable performance your facility depends on. Whether you're replacing an existing EDB-series breaker or completing a new installation, the EDB24040 offers the fit, function, and proven protection needed to keep your electrical system operating as intended.

If you're looking for a dependable replacement breaker that combines trusted Square D quality with long-term reliability, the EDB24040 is an excellent choice for helping keep your electrical distribution system operating safely and efficiently.

Key Features and Benefits

• 40 Amp, 2-pole E-Frame circuit breaker for Square D NF panelboards
• Secure bolt-on mounting provides a dependable mechanical and electrical connection
• Thermal-magnetic trip unit protects against overloads and short-circuit faults
• Rated for 480Y/277V AC commercial and industrial electrical systems
• Interrupting capacity up to 25 kAIC for reliable fault protection
• Built-in trip indicator simplifies troubleshooting and maintenance
• HID rated for high-intensity discharge lighting applications
• HACR rated for heating, air conditioning, and refrigeration equipment
• Compatible with both copper and aluminum conductors
• Ideal for replacement projects, preventive maintenance, and commercial electrical upgrades
  

Technical Specifications

• Catalog Number: EDB24040
  
• 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: 480Y/277V AC
  
• Poles: 2
  
• Number of Spaces Required: 2
  
• Mounting Style: Bolt-On
  
• Compatible Panelboards: Square D NF Panelboards
  
• Trip Unit Technology: Thermal-Magnetic
  
• Trip Unit Rating: 1,800 Amps
  
• Holding Current: 630 Amps
  
• Protection Type: Overload and Short Circuit
  
• Interrupting Capacity:
  • 25 kAIC @ 120V AC
  • 25 kAIC @ 120/240V AC
  • 25 kAIC @ 240V AC
  • 18 kAIC @ 277V AC
  • 18 kAIC @ 480Y/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. (143.76 mm)
  • Width: 1.96 in. (49.78 mm)
  • Depth: 4.05 in. (102.87 mm)
• Weight: 3 lb (1.4 kg)
  

Material Compliance and Certifications

The EDB24040 is cULus Listed, meeting recognized North American standards for electrical safety and performance. It is also HID- and HACR-rated, making it suitable for high-intensity discharge lighting systems as well as heating, air conditioning, and refrigeration equipment where those ratings are specified. In addition, this breaker is TAA compliant and calibrated for dependable operation at ambient temperatures up to 40°C (104°F). Installation should always be performed by qualified electrical personnel in accordance with applicable national and local electrical codes.

• UL Standards: When installed according to electrical codes, you can have confidence that this unit adheres to expected construction and compliance benchmarks.
  

Where It Works Best

• Square D NF panelboards
• Commercial and industrial electrical distribution systems
• 480Y/277V AC branch circuit protection
• Office buildings, healthcare facilities, schools, retail centers, and municipal facilities
• Manufacturing plants and industrial operations
• High-intensity discharge (HID) lighting systems
• Heating, air conditioning, and refrigeration (HACR) equipment
• Commercial lighting and equipment branch circuits
• Replacement of existing EDB-series bolt-on circuit breakers
• Preventive maintenance, panel upgrades, and electrical modernization projects