HMD63B700 - 700Amp Circuit Breaker

HMD63B700 - 700Amp Circuit Breaker

When you're replacing a breaker in existing equipment, getting the details right matters. The Siemens HMD63B700 is a 700A, 3-pole molded case circuit breaker from the SENTRON HMD6 family, built around the MD frame and designed for systems operating up to 600VAC. It features a thermal-magnetic trip unit with an interrupting rating of 50 kAIC at 600V and 65 kAIC at 480V. Siemens equips the breaker with TA3K500 lugs on the load sides, accommodating copper or aluminum conductors from 1/0 AWG through 500 kcmil.

Key Features and Benefits

• 700A, 3-pole configuration for equipment designed around this specific breaker rating.
• Rated for applications up to 600VAC.
• Thermal-magnetic trip unit provides overcurrent and short-circuit protection.
• Uses the Siemens MD frame, an important detail when matching an existing installation.
• Includes TA3K500 load-side lugs.
• Accepts 1/0 AWG through 500 kcmil copper or aluminum conductors.
• Standard 40°C breaker configuration.
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: HMD63B700
  
• Product Type: Molded Case Circuit Breaker
  
• Product Family: HMD6
  
• Frame: MD
  
• Amperage: 700A
  
• Poles: 3
  
• Voltage: Up to 600VAC
  
• Trip Type: Thermal-Magnetic
  
• Interrupting Rating at 600V: 50kAIC
  
• Interrupting Rating at 480V: 65kAIC
  
• Temperature Configuration: Standard 40°C
  
• Load Lugs: TA3K500
  
• Wire Range: 1/0 AWG–500 kcmil
  
• Conductor Compatibility: Copper / Aluminum (Cu/Al)
  
• Dimensions (W × H × D): 9 × 16 × 6 in.
  
• Net Weight: 57.871 lb
  
• UPC: 783643214767
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The HMD63B700 molded case circuit breaker meets UL 489 and IEC 60947-2 standards, providing clear compliance information when checking the breaker against an existing system's requirements.

Where It Works Best

The Siemens HMD63B700 makes the most sense for existing or legacy electrical equipment designed for this breaker—or where the required replacement specifications match its MD frame, 700A Rating, 3-pole arrangement, voltage, interrupting capacity, trip type, lug configuration, and physical dimensions.