HMD63B800L - 800Amp Circuit Breaker

HMD63B800L - 800Amp Circuit Breaker

When you’re replacing a circuit breaker in an existing electrical system, getting the details right matters. The Siemens HMD63B800L is an 800A, 3-pole SENTRON molded case circuit breaker built on the MD frame and rated for applications up to 600VAC. It uses a thermal-magnetic trip unit and carries interrupting ratings of 50 kAIC at 600V and 65 kAIC at 480V.

Key Features and Benefits

• 800A, 3-pole configuration: Designed for compatible three-pole electrical distribution applications requiring an 800-amp breaker.
• 600VAC rating: Suitable for systems operating within the manufacturer's specified voltage limits.
• Thermal-magnetic trip: Provides the trip characteristics specified for this SENTRON molded case circuit breaker.
• Lugs on both sides: TA3K500 lugs are provided on the line and load sides.
• Cu/Al conductor compatibility: Accommodates copper or aluminum conductors ranging from 1/0 AWG to 500 kcmil.
• MD-frame construction: Helps maintain the required form, fit, and function when the application specifically calls for an MD-frame breaker.
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number / MFN: HMD63B800L
  
• Product Family: HMD6
  
• Product Type: SENTRON Molded Case Circuit Breaker
  
• Frame: MD
  
• Amperage: 800A
  
• Number of Poles: 3
  
• Voltage Rating: 600VAC
  
• Trip Unit: Thermal-Magnetic
  
• Temperature Configuration: Standard 40°C
  
• Interrupting Rating at 600V: 50kAIC
  
• Interrupting Rating at 480V: 65kAIC
  
• Line-Side Lugs: TA3K500
  
• Load-Side Lugs: TA3K500
  
• Wire Range: 1/0 AWG–500 kcmil
  
• Conductor Type: Copper / Aluminum (Cu/Al)
  
• Dimensions (W × H × D): 9 × 16 × 6 in.
  
• Net Weight: 61.619 lb
  
• UPC: 783643008762
  
• Commodity Code: 8536200020
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The HMD63B800L meets UL 489 and IEC 60947-2 standards, providing electricians and maintenance teams with documented standards to reference when checking the breaker for an existing application.

Manufacturer information also identifies the product as ECCN EAR99 and not classified as dangerous goods. WEEE (2012/19/EU) take-back obligations are listed as No. RoHS substance-restriction compliance and a SCIP number are listed by the manufacturer as not available.

Where It Works Best

The HMD63B800L makes the most sense in existing electrical distribution equipment specifically designed for an 800A, 3-pole MD-frame molded-case circuit breaker that matches the electrical and physical requirements. For maintenance and replacement work, the catalog number is a useful starting point—but it shouldn’t be the only thing you check.