EP3125 - 125Amp Circuit Breaker

EP3125 - 125 Amp Circuit Breaker

If you're working with an existing panelboard and need a circuit breaker that fits right the first time, the EP3125 is built for exactly that purpose. This 125 amp, 3-pole breaker is designed to match ED-A frame systems, making it a practical choice when maintaining or restoring electrical distribution equipment. With its thermal magnetic trip mechanism, it helps protect your circuits from overloads and short circuits without adding unnecessary complexity. The plug-on design keeps installation straightforward, which can save time when you're on the job. It’s the kind of breaker electricians rely on when the goal is simple: get the system back up and running safely and correctly.

Key Features and Benefits

• 125 amp capacity supports a wide range of commercial and industrial circuit needs
• 3-pole design works with three-phase power systems
• Thermal magnetic trip helps respond to both overloads and short circuits
• Plug-on connection allows for quicker, more efficient installation
• Common-trip function ensures all poles disconnect together for safety
• Designed to match ED-A frame panelboards for proper fit and alignment
• Occupies six (6) 1-inch panel spaces for accurate panel configuration

Technical Specifications

• Part Number: EP3125
  
• Amperage: 125A
  
• Poles: 3
  
• Voltage Rating: 240 VAC
  
• Interrupting Rating (A.I.C.): 10kA @ 240VAC
  
• Frame Type: ED-A
  
• Trip Type: Thermal Magnetic
  
• Mounting Style: Plug-On
  
• Trip Configuration: Common Trip
  
• Panel Space Requirement: Six (6) 1" spaces
  
• Approximate Shipping Height: 7.25"
  
• Shipping Weight: 3.0 lbs
  

Material Compliance and Certifications

• Built to align with commonly accepted industry standards for molded case circuit breakers
• Intended for use in systems installed in accordance with NEC (National Electrical Code) guidelines
• Suitable for applications requiring properly rated and code-compliant circuit protection devices

Where It Works Best

The EP3125 is a solid fit for commercial buildings, industrial facilities, and institutional settings where ED-A frame panelboards are already in place. You’ll typically find it supporting power distribution for lighting systems, HVAC equipment, and general-purpose circuits. It’s especially useful in maintenance and repair situations where matching the original breaker specifications matters most.