ED63B125L - 125Amp Circuit Breaker

ED63B125L - 125Amp Circuit Breaker

When your electrical system calls for a 125 Amp, 3-pole circuit breaker that's designed to match existing Siemens equipment, the Siemens ED63B125L delivers the form, fit, and function needed for dependable circuit protection. Part of the trusted Siemens SENTRON ED Frame family, this molded-case circuit breaker combines a thermal-magnetic trip unit with a 600 VAC rating to help safeguard electrical systems from overloads and short circuits in commercial and industrial environments.

The ED63B125L features an 18kA interrupting capacity at 600VAC and 25kA at 480VAC, making it well suited for a variety of low-voltage power distribution applications. Factory-installed line- and load-side lugs (TA1E6125) simplify conductor termination while supporting both copper and aluminum wiring, giving installers added flexibility during maintenance or replacement projects.

Key Features and Benefits

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

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: ED63B125L
  
• Manufacturer Part Number (MPN): ED63B125L
  
• 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 Capacity: 18kAIC @ 600VAC; 25kAIC @ 480VAC
  
• Terminal Type: Line and 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: 4.008 lbs.
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The Siemens ED63B125L is manufactured to meet widely recognized electrical safety and environmental standards.

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

Where It Works Best

The Siemens ED63B125L is commonly used in commercial buildings, industrial facilities, manufacturing plants, schools, healthcare facilities, and other low-voltage electrical distribution systems that require a 125 Amp, 3-pole, 600VAC molded case circuit breaker. It is designed for use in compatible Siemens panelboards, switchboards, and distribution equipment where an ED Frame breaker is specified.

Whether you're replacing a failed breaker during routine maintenance or matching an existing installation, the ED63B125L offers the ratings, terminal configuration, and compatibility needed to keep your electrical system operating as intended.