ED63B125 - 125Amp Circuit Breaker

ED63B125 - 125Amp Circuit Breaker

When your electrical distribution system requires a 125 Amp, 3-pole molded case circuit breaker, the Siemens ED63B125 provides the ratings and compatibility needed to help maintain the safe operation of existing power systems. Part of the trusted Siemens SENTRON ED Frame family, this circuit breaker features a thermal-magnetic trip unit that responds to both overloads and short circuits, making it well suited for commercial and industrial low-voltage applications. Rated for 600VAC with an interrupting capacity of 18kA at 600VAC and 25kA at 480VAC, the ED63B125 is designed as a form, fit, and functional replacement for compatible Siemens ED Frame installations. This model comes equipped with load-side lugs (TA1E6125) and accepts both copper and aluminum conductors, making installation within compatible systems straightforward.

Key Features and Benefits

• Siemens SENTRON ED Frame molded case circuit breaker
• 125 Amp continuous current rating
• Three-pole design for three-phase electrical systems
• Thermal-magnetic trip unit provides overload and short-circuit protection
• Rated for systems up to 600VAC
• 18kA interrupting capacity at 600VAC
• 25kA interrupting capacity at 480VAC
• Factory-installed load-side lugs (TA1E6125)
• Accepts both copper and aluminum conductors
• Standard 40°C calibration
• Built to last for commercial and industrial electrical applications
• Designed as a form, fit, and functional replacement for compatible Siemens ED Frame circuit breakers
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: ED63B125
  
• Manufacturer Part Number (MPN): ED63B125
  
• Product Type: Molded Case Circuit Breaker
  
• Series: SENTRON ED Frame
  
• Current Rating: 125 Amps
  
• Number of Poles: 3
  
• Voltage Rating: 600VAC
  
• Trip Unit: Thermal-Magnetic
  
• Interrupting Rating: 18kAIC at 600VAC; 25kAIC at 480VAC
  
• Terminal Type: Load Side Lugs (TA1E6125)
  
• Copper Wire Range: 3 AWG to 3/0 AWG
  
• Aluminum Wire Range: 1 AWG to 2/0 AWG
  
• Calibration: Standard 40°C
  
• Dimensions:
  • Width: 3.00 in.
  • Height: 6.35 in.
  • Depth: 3.92 in.
• Weight: 3.73 lbs.
  
• Country of Origin: Mexico

Material Compliance and Certifications

The Siemens ED63B125 is manufactured to meet recognized industry requirements for low-voltage circuit protection and environmental compliance.

• UL 489 Listed
• IEC 60947-2 Compliant
• RoHS Compliant (since October 10, 2008)
• REACH Article 33 Compliant
• WEEE (2012/19/EU) Compliant
  

Where It Works Best

The Siemens ED63B125 is intended for use in commercial buildings, industrial facilities, manufacturing plants, institutional properties, and other low-voltage electrical distribution systems that require a 125 Amp, 3-pole, 600VAC molded case circuit breaker. It is commonly installed in compatible Siemens panelboards, switchboards, and distribution equipment where an ED Frame breaker is specified. Because it is designed as a form-fit-and-function replacement, it helps maintain the original configuration of existing electrical systems without requiring changes to compatible equipment.