HED43B125L - 125Amp Circuit Breaker

HED43B125L - 125Amp Circuit Breaker

The Siemens HED43B125L is a 125 Amp, 3-pole molded case circuit breaker built for use in compatible low-voltage commercial and industrial electrical systems. This ED-frame breaker includes a thermal-magnetic trip unit that provides protection during overload and short-circuit conditions, helping protect your connected equipment and electrical circuits. With a 480 VAC rating and 42kAIC interrupting capacity, the HED43B125L is intended for applications where these specific electrical requirements are needed.

Key Features and Benefits

• 125 Amp current rating
• Three-pole design for three-phase electrical systems
• Siemens SENTRON ED-frame molded case circuit breaker
• Thermal-magnetic trip unit for overload and short-circuit protection
• 480 VAC voltage rating
• Includes line and load side lugs (TA1E6125)
• Supports copper and aluminum conductors
• Standard 40°C calibration
• Suitable for compatible Siemens panelboards, switchboards, and distribution equipment
• Built to last for commercial and industrial applications
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: HED43B125L
  
• Product Type: Molded Case Circuit Breaker
  
• Frame: ED
  
• Current Rating: 125 Amps
  
• Number of Poles: 3
  
• Voltage Rating: 480 VAC
  
• Interrupting Rating: 42kAIC at 480 VAC
  
• Trip Unit: Thermal-Magnetic
  
• Terminal Configuration: Line and Load Side Lugs (TA1E6125)
  
• Copper Wire Range: 3 AWG–3/0 AWG
  
• Aluminum Wire Range: 1 AWG–2/0 AWG
  
• Dimensions: 3.00" W × 6.35" H × 3.92" D
  
• Weight: 3.616 lb
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

• UL 489 Listed
• IEC 60947-2 Compliant
• RoHS compliance information available
• REACH information available
• Export Classification: EAR99
  

Where It Works Best

The Siemens HED43B125L is commonly used in industrial facilities, commercial buildings, manufacturing environments, and other electrical distribution systems that use compatible Siemens ED-frame breakers. It is a good fit for applications where the original breaker specifications call for a 125 Amp, 3-pole, 480V circuit breaker with a 42kAIC rating.