HRD63B180 - 1800Amp Circuit Breaker

HRD63B180 - 1800Amp Circuit Breaker

When you're replacing a large-frame breaker, amperage is only one piece of the puzzle. Siemens HRD63B180 is an 1800A, 3-pole SENTRON molded case circuit breaker built around the RD frame and a thermal-magnetic trip unit. For compatible existing and legacy equipment that calls for this configuration, the HRD63B180 provides a clearly defined form, fit, and function replacement option. It's built to last, but proper installation starts with confirming every critical specification against the equipment being serviced.

Key Features and Benefits

• 1800A, 3-pole configuration: Gives you two of the first specifications to compare with the existing breaker and equipment documentation.
• RD frame: An important detail when checking physical and equipment compatibility—not just electrical ratings.
• 600V rating: Matches systems that specifically require this voltage rating, along with the breaker's other specifications.
• Thermal-magnetic trip unit: Uses the trip configuration identified by the manufacturer for the HRD63B180.
• Lugs included on both sides: The breaker has TC5R600 line- and load-side lugs.
• Defined conductor range: Lugs accept 300–600 kcmil copper conductors only, reducing guesswork in connection matching.
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number / MFN: HRD63B180
  
• Article Number: US2:HRD63B180
  
• Product Line: SENTRON
  
• Product Family: HRD6, 50 kAIC, 600 VAC
  
• Breaker Type: Molded Case Circuit Breaker
  
• Frame: RD
  
• Rated Current: 1800 A
  
• Poles: 3
  
• Voltage Rating: 600 V
  
• Interrupt Rating at 600 V: 50 kAIC
  
• Interrupt Rating at 480 V: 65 kAIC
  
• Trip Unit: Thermal-Magnetic
  
• Temperature Designation: Standard 40°C breaker
  
• Line-Side Lugs: TC5R600
  
• Load-Side Lugs: TC5R600
  
• Wire Range: 300–600 kcmil
  
• Conductor Material: Copper only
  
• Dimensions: 9" W x 16" H x 6.19" D
  
• Net Weight: 169.403 lb
  
• Applicable Standards: UL 489 / IEC 60947-2
  
• UPC: 783643008946
  
• Country of Origin: Mexico
  
• Dangerous Goods: No
  

Material Compliance and Certifications

For the HRD63B180, Siemens specifically states that the breaker meets UL 489 and IEC 60947-2 standards. I would keep the compliance language that precise rather than adding certifications that aren't stated in the supplied manufacturer information.

Where It Works Best

The HRD63B180 makes sense when maintaining compatible existing or legacy electrical equipment that specifically calls for an 1800A, three-pole RD-frame molded case circuit breaker with the corresponding voltage, interrupt, trip, and connection specifications. This is especially the kind of replacement where matching the complete catalog specification matters more than finding another breaker with the same amp rating.