HLXD63B300 - 300Amp Circuit Breaker

HLXD63B300 - 300Amp Circuit Breaker

Finding the right replacement for your breaker often comes down to the details. The HLXD63B300 is a 300-amp, 3-pole molded case circuit breaker built in the HLD6-A configuration for electrical systems that require a specific combination of amperage, interrupting capacity, trip style, and physical dimensions. This breaker includes a non-interchangeable trip unit and load-side lugs, two details that should be verified when matching it to an existing installation. For maintenance teams, electricians, and facility professionals working with existing equipment, this breaker provides the specifications needed to confirm whether it matches the original application. When the ratings and configuration line up, the HLXD63B300 provides a dependable, built-to-last replacement.

Key Features and Benefits

• 300A molded case circuit breaker for applications requiring a 300-amp rating.
• 3-pole configuration for compatible three-phase electrical systems.
• HLD6-A type helps identify the correct breaker family and configuration.
• Non-interchangeable trip unit maintains the specified breaker configuration.
• Load-side lugs included for applications requiring this connection arrangement.
• Defined physical dimensions make it easier to compare against existing equipment.
• Suitable for replacement applications where matching the original electrical specifications is important.
  

Technical Specifications

• Part Number: HLXD63B300
  
• Breaker Type: HLD6-A
  
• Product Type: Molded Case Circuit Breaker
  
• Amperage: 300A
  
• Poles: 3
  
• A.I.C. Rating at 600VAC: 35 kAIC
  
• A.I.C. Rating at 480VAC: 65 kAIC
  
• A.I.C. Rating at 240VAC: 100 kAIC
  
• DC A.I.C. Rating: 30 kAIC at 250VDC (for 2-pole applications)
  
• Trip Unit: Non-interchangeable
  
• Load-Side Lugs: Included
  
• Height: 11.0 in.
  
• Width: 7.5 in.
  
• Depth: 4.0 in.
  
• Dimensions: 7.50"W x 11.00"L x 4.00"D
  
• Approximate Shipping Weight: 18.00 lbs.
  

Material Compliance and Certifications

Specific material compliance information and certification details were not included in the available specifications for the HLXD63B300.

For applications that require documentation, verify applicable certification and compliance requirements using the product documentation and the electrical equipment specifications for the installation.

Where It Works Best

The HLXD63B300 is a good fit for electrical distribution equipment that specifically calls for an HLD6-A 300A, 3-pole molded-case circuit breaker with the listed interrupting ratings and load-side lug configuration. It is especially useful in maintenance and replacement situations where the goal is to keep the existing equipment setup unchanged.

Before replacing a breaker, it is worth checking more than just the amp rating. Confirm the part number, breaker type, number of poles, voltage rating, A.I.C. rating, trip unit style, lug configuration, and physical dimensions to make sure the replacement matches the equipment requirements.