HLD63B400 - 400Amp Circuit Breaker

HLD63B400 - 400Amp Circuit Breaker

The Siemens HLD63B400 is a 400-amp, 3-pole molded case circuit breaker built on the SENTRON LD frame. For anyone maintaining an existing electrical system, this is the kind of breaker where the details really count. If you're working on equipment that calls for an HLD63B400, these specifications provide the key points to compare—frame, amperage, poles, voltage, trip type, interrupting capacity, lug arrangement, and dimensions. It's built to last and intended to provide the form, fit, and function required by compatible electrical distribution equipment.

Key Features and Benefits

• 400A, 3-pole configuration for compatible electrical distribution systems.
• Rated for operation up to 600 VAC.
• Uses a thermal-magnetic trip unit.
• Built around the familiar LD frame in the SENTRON HLD6 family.
• Standard 40°C breaker configuration.
• Comes with TA2J6500 load-side lugs.
• Accepts 3/0 AWG–500 kcmil copper conductors.
• Accepts 4/0 AWG–500 kcmil aluminum conductors.
• Measures 7.5 × 11 × 4 inches, giving maintenance personnel a clear reference when checking fit.
• Meets UL 489 and IEC 60947-2 standards.
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: HLD63B400
  
• Article Number: US2\:HLD63B400
  
• Product Family: HLD6
  
• Product Type: Molded Case Circuit Breaker
  
• Frame: LD
  
• Trip Type: Thermal-Magnetic
  
• Amp 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
  
• 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.
  
• UPC: 783643214064
  
• Commodity Code: 8536200020
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The HLD63B400 meets UL 489 and IEC 60947-2 standards. Those are useful reference points when you're checking a replacement breaker against the equipment and installation requirements.

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

Where It Works Best

The Siemens HLD63B400 is a natural fit for compatible electrical distribution equipment that requires a 400A, 3-pole LD-frame molded-case circuit breaker with a thermal-magnetic trip unit and a 600 VAC rating. It can be particularly useful for maintenance and replacement work in existing or legacy systems where the goal is to preserve the original form, fit, and function.