HLB3400 - 400Amp Circuit Breaker

HLB3400 - 400Amp Circuit Breaker

When you’re replacing a circuit breaker in existing equipment, getting the details right matters. The HLB3400 is a 400-amp, 3-pole thermal-magnetic circuit breaker with an interchangeable trip unit, designed for applications that require the HLB configuration. It is 40°C-rated and comes with load-side terminals.

Key Features and Benefits

• 400 amp, 3-pole configuration for compatible electrical distribution applications.
• Thermal magnetic operation provides the specified trip functionality for this HLB breaker.
• Interchangeable trip unit is part of the HLB3400 configuration.
• 40°C rated for applications requiring this temperature rating.
• Load-side terminals are included, which is worth confirming when matching a replacement breaker.
• Clearly defined dimensions help technicians check physical fit before installation.
  

Technical Specifications

• Part Number: HLB3400
  
• Type: HLB
  
• Breaker Type: Thermal Magnetic
  
• Amperage: 400 A
  
• Poles: 3
  
• Temperature Rating: 40°C
  
• A.I.C. at 600VAC: 25k
  
• A.I.C. at 480VAC: 35k
  
• A.I.C. at 240VAC: 65k
  
• Trip Unit: Interchangeable
  
• Load-Side Terminals: Included
  
• Width: 5.50 in.
  
• Height / Length: 10.13 in.
  
• Depth: 3.94 in.
  
• Dimensions: 5.50"W x 10.13"L x 3.94"D
  
• Approximate Shipping Weight: 15.00 lbs.
  

Material Compliance and Certifications

No specific material compliance certifications or agency listings were included in the supplied HLB3400 specifications. Because requirements can differ from one installation to another, certifications such as UL, CSA, RoHS, or similar standards should not be assumed without supporting documentation.

If a project requires a particular listing or compliance standard, confirm that requirement against the applicable product documentation before installation.

Where It Works Best

The HLB3400 400A 3-pole circuit breaker makes the most sense for existing electrical equipment that specifically calls for an HLB-type thermal-magnetic breaker with matching ratings. That can include maintenance work, replacement projects, and the continued operation of compatible legacy electrical distribution equipment.