HLD63B350 - 350Amp Circuit Breaker

HLD63B350 - 350Amp Circuit Breaker

The Siemens HLD63B350 is a 350-amp, 3-pole molded case circuit breaker from the SENTRON HLD6 family. Built on the LD frame, it uses a thermal-magnetic trip unit and is rated for your applications up to 600 VAC. Its interrupting rating is 35 kAIC at 600V and 65 kAIC at 480V. That combination of ratings makes the HLD63B350 a specific choice for electrical systems designed around this breaker configuration—not simply another 350A breaker.

Key Features and Benefits

• 350-amp, 3-pole design for compatible three-pole electrical systems.
• Rated for 600 VAC operation.
• Thermal-magnetic trip unit in an LD-frame molded case design.
• Supplied with TA2J6500 load-side lugs.
• Handles a wide conductor range: 3/0 AWG–500 kcmil copper and 4/0 AWG–500 kcmil aluminum.
• 7.5 × 11 × 4-inch dimensions make physical fit easier to verify before installation.
• Meets UL 489 and IEC 60947-2 standards.
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: HLD63B350
  
• Article Number: US2\:HLD63B350
  
• Product Type: Molded Case Circuit Breaker
  
• Series / Family: SENTRON HLD6
  
• Frame: LD
  
• Trip Type: Thermal-Magnetic
  
• Amp Rating: 350A
  
• Poles: 3
  
• Voltage Rating: 600 VAC
  
• Interrupting Rating – 600V: 35 kAIC
  
• Interrupting Rating – 480V: 65 kAIC
  
• Temperature Rating: 40°C
  
• Lugs: TA2J6500, load sides
  
• Copper Conductor Range: 3/0 AWG–500 kcmil
  
• Aluminum Conductor Range: 4/0 AWG–500 kcmil
  
• Dimensions (W × H × D): 7.5 × 11 × 4 in.
  
• Net Weight: 20.349 lb
  
• UPC: 783643214057
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The HLD63B350 meets UL 489 and IEC 60947-2 standards. These are important specifications to check when replacing a breaker in equipment where the applicable standards and the original system configuration must be maintained.

Manufacturer information also identifies REACH Article 33 reporting for this product. RoHS substance-restriction compliance information and a SCIP number are listed as unavailable in the supplied product data.

Where It Works Best

The HLD63B350 makes the most sense in electrical distribution equipment specifically designed for a 350A, 3-pole LD-frame molded case circuit breaker with the corresponding voltage, interrupting, trip, and connection requirements. It can be a practical choice for maintaining existing and legacy installations where matching the original breaker matters.