HN3B500 - 500Amp Circuit Breaker

HN3B500 - 500Amp Circuit Breaker

The Siemens HN3B500 is a 500-amp, three-pole molded-case circuit breaker designed for electrical distribution equipment requiring an HN3 frame configuration.

When you're replacing a circuit breaker, matching the amperage is only the first step. The frame style, pole count, voltage rating, and interrupt capacity must match the existing equipment.

Key Features and Benefits

• 500A current rating for applications requiring a 500-amp circuit breaker.
• Three-pole configuration for compatible three-phase electrical systems.
• HN3 frame design for equipment requiring this specific breaker frame.
• 40°C temperature rating for applications using the listed operating condition.
• Molded case construction commonly used in commercial and industrial electrical distribution equipment.
• Replacement-friendly design for applications where maintaining the existing breaker setup is important.
  

Technical Specifications

• Part Number: HN3B500
  
• Manufacturer: Siemens
  
• Product Type: Molded case circuit breaker
  
• Frame Type: HN3
  
• Amperage Rating: 500 A
  
• Number of Poles: Three-pole
  
• Temperature Rating: 40°C
  
• A.I.C. Rating:42 kA at 600 VAC
  
• 65 kA at 480 VAC
  
• 65 kA at 240 VAC
  
• Dimensions: 9.00"W x 15.50"L x 4.00"D
  
• Height: 15.5 in.
  
• Width: 9.0 in.
  
• Depth: 4.0 in.
  
• Approximate Ship Weight: 42.00 lbs
  

Material Compliance and Certifications

The available specifications identify the Siemens HN3B500 as a molded case circuit breaker, but additional material compliance details and certification information were not provided.

For projects with specific environmental, regulatory, or material requirements, those requirements should be confirmed before installation.

Where It Works Best

The Siemens HN3B500 500A molded case circuit breaker is best suited for existing electrical distribution equipment that calls for an HN3 frame, three-pole breaker, and matching interrupt rating requirements.

This breaker is a good fit for maintenance applications where the goal is to replace an existing unit while preserving the original electrical characteristics. Before installation, verify the complete specification match, including amperage, frame type, number of poles, voltage, and available fault current rating.