HFD62B125L - 125Amp Circuit Breaker

HFD62B125L - 125Amp Circuit Breaker

When you're replacing a breaker in an existing electrical system, getting the details right matters. The Siemens HFD62B125L is a 125-amp, 2-pole molded case circuit breaker for applications that require the Siemens FD frame configuration. The associated HFD62B125 configuration uses TA1FD350A line- and load-side lugs, accommodating copper conductors from 6 AWG to 350 kcmil and aluminum conductors from 4 AWG to 350 kcmil. Its dimensions are approximately 4.5 inches wide, 9.5 inches high, and 4 inches deep, which is an important detail when you're trying to match an existing installation.

Key Features and Benefits

• 125A, 2-pole configuration for systems designed around these specific electrical requirements.
• Rated for operation up to 600VAC.
• Thermal-magnetic trip provides overload and short-circuit protection.
• FD frame construction helps maintain the required form and fit in compatible equipment.
• Line- and load-side TA1FD350A lugs on the associated breaker configuration.
• Handles a wide conductor range: 6 AWG–350 kcmil copper and 4 AWG–350 kcmil aluminum.
• Meets recognized UL 489 and IEC 60947-2 standards.

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: HFD62B125L
  
• Breaker Reference: HFD62B125
  
• Breaker Type: Molded Case Circuit Breaker
  
• Frame: FD
  
• Product Family: HFD6
  
• Amperage: 125A
  
• Number of Poles: 2
  
• Maximum Voltage: 600VAC
  
• Trip Type: Thermal-Magnetic
  
• Interrupting Rating at 600V: 25 kAIC
  
• Interrupting Rating at 480V: 65 kAIC
  
• Temperature Configuration: Standard 40°C
  
• Lugs: TA1FD350A, line and load side
  
• Copper Wire Range: 6 AWG–350 kcmil
  
• Aluminum Wire Range: 4 AWG–350 kcmil
  
• Dimensions (W × H × D): 4.5" × 9.5" × 4"
  
• Standards: UL 489 / IEC 60947-2
  

Material Compliance and Certifications

The referenced Siemens HFD62B125 configuration meets UL 489 and IEC 60947-2 standards. These standards are important when confirming that a breaker matches the requirements of a particular electrical system or project. Manufacturer information lists RoHS substance-restriction compliance as not available for the referenced configuration. REACH Article 33 information is addressed through the manufacturer's compliance documentation, while a SCIP number is listed as unavailable.

Where It Works Best

The HFD62B125L makes sense where the existing equipment calls for a Siemens FD-frame, 125A, 2-pole molded case circuit breaker with the corresponding voltage, trip, and interrupting ratings. That can include commercial and industrial electrical distribution equipment, as well as maintenance and replacement work in legacy systems where matching the original breaker configuration is important.