HLD63B450L - 450Amp Circuit Breaker

HLD63B450L - 450Amp Circuit Breaker

When you’re replacing a circuit breaker, the details matter. The Siemens HLD63B450L is a 450-amp, 3-pole SENTRON molded case circuit breaker built on the LD frame and rated for use up to 600 VAC. It uses a thermal-magnetic trip unit and carries an interrupting rating of 35 kAIC at 600V and 65 kAIC at 480V. This particular configuration comes assembled with TA2J6500 lugs on both the line and load sides, accepting 3/0 AWG through 500 kcmil copper wire and 4/0 AWG through 500 kcmil aluminum wire.

Key Features and Benefits

• 450A, 3-pole breaker – Configured for compatible three-phase electrical distribution applications requiring these ratings.
• Rated up to 600 VAC – Suitable where the existing equipment calls for a 600V-rated molded case circuit breaker.
• Thermal-magnetic trip – Uses the established thermal and magnetic trip functions associated with this SENTRON LD-frame design.
• Lugs already included – TA2J6500 lugs are provided on both the line and load sides.
• Copper or aluminum conductors – Accommodates 3/0 AWG–500 kcmil copper and 4/0 AWG–500 kcmil aluminum conductors.
• Defined LD-frame dimensions – At 7.5" W × 11" H × 4" D, technicians can compare the physical footprint with the breaker being replaced.
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: HLD63B450L
  
• Article Number: US2\:HLD63B450L
  
• Series / Family: HLD6
  
• Breaker Type: Molded Case Circuit Breaker
  
• Frame: LD
  
• Trip Type: Thermal-Magnetic
  
• Standard Temperature: 40°C
  
• Amp Rating: 450A
  
• Number of Poles: 3
  
• Voltage Rating: 600 VAC
  
• Interrupting Rating – 600V: 35 kAIC
  
• Interrupting Rating – 480V: 65 kAIC
  
• Line-Side Lugs: TA2J6500
  
• Load-Side Lugs: TA2J6500
  
• Copper Wire Range: 3/0 AWG–500 kcmil
  
• Aluminum Wire Range: 4/0 AWG–500 kcmil
  
• Dimensions (W × H × D): 7.5" × 11" × 4"
  
• Net Weight: 19.533 lb
  
• UPC: 783643008632
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The HLD63B450L meets UL 489 and IEC 60947-2 standards. Manufacturer data also includes information related to REACH Article 33 requirements.

RoHS substance-restriction compliance information is listed by the manufacturer as unavailable, as is a SCIP number. Rather than making assumptions about material compliance, those items should be treated in accordance with the manufacturer's published product information.

Where It Works Best

The HLD63B450L makes the most sense when you're maintaining existing equipment that specifically requires a Siemens LD-frame 450A, 3-pole molded-case circuit breaker with the corresponding electrical ratings and lug configuration. It's particularly relevant for repair and replacement work where form, fit, and function need to match the existing application.

And don't overlook the last letter in the catalog number. The “L” configuration includes line- and load-side TA2J6500 lugs. That's the kind of detail that can make the difference when you're trying to identify the correct breaker for an existing installation.