Square D EDB14050 Bolt-On Circuit Breaker – 1 Pole – 50A – 277V AC – Thermal Magnetic – E-Frame

The Square D EDB14050 is a bolt-on molded case circuit breaker designed for reliable protection in Schneider Electric NF Panelboard systems. Engineered for commercial and industrial electrical distribution, this 1-pole, 50A breaker provides dependable overload and short-circuit protection using a thermal-magnetic trip mechanism.

Designed for easy installation, the EDB14050 features a bolt-on connection style that integrates directly into NF Panelboards, ensuring secure electrical contact and simplified maintenance. It is CSA approved, UL listed, HID-rated, and HACR-rated, making it suitable for a wide range of lighting, heating, air conditioning, and general-purpose load applications.

This breaker includes a trip indicator for quick fault identification and uses aluminum lug terminals rated for both copper and aluminum conductors. Its E-Frame construction delivers compact form factor performance while maintaining strong interrupting capacity for demanding environments.

Specifications

• Brand: Square D
• Manufacturer: Schneider Electric
• Part Number: EDB14050
• Series: EDB Series
• Type: Molded Case / E-Frame
• Configuration: 1 Pole
• Phase: 1 Phase
• Current Rating: 50A
• Voltage Rating: 277V AC
• Mounting Style: Bolt-On
• Connection Type: Aluminum Lugs
• Protection Type: Thermal Magnetic
• Trip Function: LI – Long-Time and Instantaneous
• Application: NF Panelboard

Interrupting Ratings

• 18kA @ 277V
• 25kA @ 240V
• 25kA @ 120V

Dimensions

• Height: 5.66 in
• Width: 0.98 in
• Depth: 4.05 in
• Weight: 4 lbs

Electrical Ratings

• Trip Unit Rating: 875A
• Holding Current: 270A
• Maximum Operating Voltage: 277V AC
• AWG Range:
  • Copper: AWG 14–6
  • Aluminum: AWG 12–6

Construction Features

• Compact E-Frame molded case design
• Bolt-on mounting for NF Panelboard compatibility
• Thermal-magnetic protection for overload and short-circuit conditions
• Integrated trip indicator for fault identification
• Aluminum lug terminals for copper and aluminum conductors
• Calibrated for 40°C operation
• HID and HACR rated for lighting and HVAC applications

Applications

• Commercial electrical distribution systems
• NF Panelboard installations
• Lighting control circuits (HID-rated applications)
• HVAC and refrigeration systems (HACR-rated applications)
• General-purpose branch circuit protection
• Industrial and OEM electrical panels

Certifications & Approvals

• CSA Approved
• UL Listed (including HID rating)
• HACR Rated
• Authentic Square D / Schneider Electric product
• Designed for NF Panelboard systems