EDB34125 - 125 Amp Circuit Breaker

EDB34125 - 125 Amp Circuit Breaker

The Schneider Electric EDB34125 is a dependable 125 Amp, 3-pole E-Frame circuit breaker engineered to provide reliable overload and short-circuit protection for commercial and industrial electrical distribution systems. Designed specifically for use in compatible Square D NF panelboards, this bolt-on circuit breaker combines proven thermal-magnetic trip technology with a built-in trip indicator that provides quick visual confirmation when the breaker has interrupted a fault. Whether you're replacing an existing breaker or installing new equipment, the EDB34125 delivers the performance, durability, and protection professionals expect to help keep electrical systems operating safely and efficiently.

Rated for 480Y/277 VAC applications, the EDB34125 offers interrupting ratings of up to 25 kA at applicable voltage levels, making it well suited for protecting lighting circuits, HVAC equipment, and a variety of three-phase commercial loads.

Key Features and Benefits

• 125 Amp current rating for dependable branch circuit protection
• Three-pole design for three-phase electrical distribution systems
• Thermal-magnetic trip unit provides reliable overload and short-circuit protection
• Bolt-on mounting delivers a secure, stable installation
• Integrated trip indicator allows quick visual identification of a tripped breaker
• Rated for operation up to 480Y/277 VAC
• Interrupting capacity up to 25 kA at applicable voltage ratings
• Compatible with both copper and aluminum conductors
• Designed for use in compatible Square D NF panelboards
• HACR rated for heating, air conditioning, and refrigeration equipment
• Supports a variety of compatible field-installable accessories
• Factory calibrated for dependable performance at 40°C (104°F) ambient temperature

Technical Specifications

• Manufacturer: Schneider Electric
  
• Catalog Number: EDB34125
  
• Series: EDB E-Frame (125A Frame)
  
• Product Type: Miniature Circuit Breaker
  
• Device Type: E-Frame
  
• Current Rating: 125 Amps
  
• Poles: 3
  
• Maximum Operating Voltage: 480Y/277 VAC
  
• Trip Unit Technology: Thermal-Magnetic
  
• Trip Unit Rating: 2300 A
  
• Holding Current: 1000 A
  
• Interrupting Ratings:
  • 25 kA @ 120 VAC
  • 25 kA @ 120/240 VAC
  • 25 kA @ 240 VAC
  • 18 kA @ 277 VAC
  • 18 kA @ 480Y/277 VAC
• Mounting Style: Bolt-On
  
• Panelboard Compatibility: Compatible Square D NF Panelboards
  
• Wire Range:
  • Copper: 14 AWG–2/0 AWG
  • Aluminum: 12 AWG–2/0 AWG
• Connection Type: Aluminum Lugs
  
• Number of Poles: 3
  
• Number of Spaces Required: 3
  
• Local Signaling: Trip Indicator
  
• Protection Type: Overload and Short Circuit
  
• Breaking Capacity Code: D
  
• Tightening Torque:
  • 34.5 lb-in (3.9 N·m) for 14–10 AWG conductors
  • 49.6 lb-in (5.6 N·m) for 8 AWG–2/0 AWG conductors
• Dimensions:
  • Height: 5.66 in.
  • Width: 2.94 in.
  • Depth: 4.05 in.
• Weight: Approximately 4 lbs. (1.8 kg)
  

Material Compliance and Certifications

The Schneider Electric EDB34125 is cULus Listed, HACR-rated, and TAA-compliant, meeting recognized North American standards for electrical safety, quality, and performance. It is calibrated for reliable operation at ambient temperatures up to 40°C (104°F), helping ensure consistent protection under normal operating conditions. Installation should always be performed by qualified personnel in accordance with the National Electrical Code (NEC) and all applicable local electrical codes.

Where It Works Best

• Commercial office buildings
• Manufacturing facilities
• Warehouses and distribution centers
• Healthcare facilities
• Educational campuses
• Retail stores and shopping centers
• Hotels and hospitality properties
• Government and municipal buildings
• HVAC equipment and air conditioning systems (HACR applications)
• Lighting distribution systems
• Electrical maintenance, retrofit, and panelboard upgrade projects