HLXD63B400L - 400Amp Circuit Breaker

HLXD63B400L - 400Amp Circuit Breaker

When you're replacing a circuit breaker in existing equipment, the details matter. The HLXD63B400L is a 400-amp, 3-pole HLD6-A molded-case circuit breaker with a non-interchangeable trip unit and included line- and load-side lugs. Measuring approximately 7.50" W x 11.00" L x 4.00" D, the HLXD63B400L is a practical choice for compatible commercial and industrial equipment, including legacy installations where maintaining the correct form, fit, and function is important. It's a straightforward breaker built to last and intended to do the job it was designed for—provided the part number, ratings, configuration, and dimensions match your application.

Key Features and Benefits

• 400 Amp, 3-pole configuration for compatible electrical systems.
• HLD6-A type helps identify the correct breaker family and fit.
• Non-interchangeable trip unit provides a fixed trip configuration.
• Includes line- and load-side lugs, eliminating guesswork about the supplied connection arrangement.
• Defined dimensions make it easier to check the breaker against the space and mounting requirements of existing equipment.
• A sensible option for maintenance and replacement in compatible legacy electrical systems.
  

Technical Specifications

• Part Number: HLXD63B400L
  
• Type: HLD6-A
  
• Product Type: Molded Case Circuit Breaker
  
• Amperage: 400 Amps
  
• Poles: 3
  
• A.I.C. @ 600VAC: 35kAIC
  
• A.I.C. @ 480VAC: 65kAIC
  
• A.I.C. @ 240VAC: 100kAIC
  
• DC Rating: 30kAIC @ 250VDC for 2-pole applications
  
• Trip Unit: Non-interchangeable
  
• Lugs: Line- and load-side lugs included
  
• Height / Length: 11.00 in.
  
• Width: 7.50 in.
  
• Depth: 4.00 in.
  
• Dimensions: 7.50" W x 11.00" L x 4.00" D
  
• Approx. Shipping Weight: 18.00 lbs.
  

Material Compliance and Certifications

Material-compliance and certification details were not included in the supplied specifications for the HLXD63B400L, so no specific agency listing, environmental compliance designation, or material certification is being claimed here.

If your facility or project requires a particular certification or compliance standard, check the markings on the breaker and applicable manufacturer documentation before installation. This is especially worthwhile when you're matching equipment in an older electrical system.

Where It Works Best

The HLXD63B400L 400 Amp circuit breaker is best suited to commercial and industrial applications that call for its specific HLD6-A type, 3-pole configuration, electrical ratings, dimensions, and connection setup. It's particularly relevant when maintaining existing or legacy equipment and the goal is to replace a breaker while preserving the required form, fit, and function.