EDB14050 - 50 Amp Circuit Breaker

EDB14050 - 50 Amp Circuit Breaker

When dependable circuit protection matters, the Square D EDB14050 delivers the performance professionals count on. Designed for use in Square D NF lighting panelboards, this 50 Amp, 1-pole E-Frame circuit breaker helps protect electrical systems from damaging overloads and short circuits while supporting reliable day-to-day operation. Whether you're replacing an existing breaker or completing a new commercial installation, the EDB14050 offers the durability and consistent performance electricians, contractors, and maintenance teams expect from Square D products.

At the heart of the breaker is a thermal-magnetic trip unit, which provides two levels of protection. The thermal element responds to sustained overloads that can gradually damage wiring and equipment, while the magnetic element reacts almost instantly to high-fault conditions such as short circuits.

Key Features and Benefits

• 50 Amp, single-pole circuit breaker for Square D NF lighting panelboards
• Secure bolt-on mounting for a dependable installation
• Thermal magnetic trip unit protects against overloads and short circuits
• Rated for 277V AC commercial branch circuit applications
• 25 kA interrupting capacity at 120V AC for reliable fault interruption
• Built-in trip indicator allows for faster fault identification
• HID rated for high-intensity discharge lighting systems
• HACR rated for heating, air conditioning, and refrigeration equipment
• Occupies one panel space for straightforward installation and replacement
• Engineered for consistent performance in commercial and industrial electrical systems
  

Technical Specifications

• Catalog Number: EDB14050
  
• Manufacturer: Square D by Schneider Electric
  
• Product Type: Miniature Circuit Breaker
  
• Series: E-Frame (EDB)
  
• Frame Size: 125 Amp Frame
  
• Rated Current: 50 Amps
  
• Maximum Operating Voltage: 277V AC
  
• 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 kAIC @ 120V AC
  • 18 kAIC @ 120/240V AC
  • 18 kAIC @ 240V AC
  • 18 kAIC @ 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 EDB14050 is cULus Listed and IEC certified, demonstrating compliance with recognized industry standards for electrical safety and performance. It is also HID and HACR rated, making it suitable for high-intensity discharge lighting systems and HVAC equipment where those ratings are required. In addition, this breaker is TAA compliant and calibrated for operation in ambient temperatures up to 40°C (104°F). Installation should be performed by qualified electrical personnel in accordance with all applicable national and local electrical codes.

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

Where It Works Best

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