HLD63B400L - 400Amp Circuit Breaker

HLD63B400L - 400Amp Circuit Breaker

When you’re replacing a circuit breaker in existing equipment, the details matter. The Siemens HLD63B400L is a 400A, 3-pole SENTRON molded case circuit breaker built on the LD frame and equipped with a thermal-magnetic trip unit. If you’re replacing an HLD63B400L in an existing system, checking the complete catalog number—as well as the frame, ratings, lugs, conductor range, and dimensions—is the practical way to confirm form, fit, and function. It’s a straightforward breaker configuration made for its intended electrical distribution applications and built to last.

Key Features and Benefits

• 400A, 3-pole configuration for compatible three-phase electrical distribution equipment.
• Rated for 600 VAC.
• Thermal-magnetic trip unit in a standard 40°C LD-frame breaker.
• Includes TA2J6500 line- and load-side lugs.
• Accepts 3/0 AWG through 500 kcmil copper conductors.
• Accepts 4/0 AWG through 500 kcmil aluminum conductors.
• Meets UL 489 and IEC 60947-2 standards.
• Known physical dimensions help when checking fit in existing equipment.
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number / MFN: HLD63B400L
  
• Article Number: US2\:HLD63B400L
  
• Product Family: HLD6
  
• Breaker Type: SENTRON Molded Case Circuit Breaker
  
• Frame: LD
  
• Trip Type: Thermal-Magnetic
  
• Ampere Rating: 400A
  
• Number of Poles: 3
  
• Voltage Rating: 600 VAC
  
• Interrupting Rating at 600V: 35 kAIC
  
• Interrupting Rating at 480V: 65 kAIC
  
• Temperature Configuration: Standard 40°C
  
• Line-Side Lugs: TA2J6500
  
• Load-Side Lugs: TA2J6500
  
• 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: 19.533 lb
  
• UPC: 783643008625
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The HLD63B400L circuit breaker meets UL 489 and IEC 60947-2 standards. These are important specifications to check when determining whether a breaker is appropriate for a particular piece of electrical distribution equipment.

The supplied manufacturer information also includes REACH Article 33 reporting. The manufacturer lists RoHS substance-restriction compliance information and a SCIP number as unavailable.

Where It Works Best

The HLD63B400L makes the most sense for existing electrical distribution systems that require its specific 400A, 3-pole, 600V LD-frame configuration. That includes maintenance and replacement situations where matching the original breaker's electrical ratings, physical size, trip type, and lug arrangement is essential.