HJ3B300 - 300Amp Circuit Breaker

HJ3B300 - 300Amp Circuit Breaker

The HJ3B300 is a 3-pole, 300-amp HJ3 molded case circuit breaker designed for your electrical equipment that uses the HJ frame configuration. Its three-pole design supports applications that use a three-phase molded case circuit breaker. Built to last, this breaker is intended for systems that need the proper frame style, electrical ratings, and physical fit.

Key Features and Benefits

• 300-amp rating – Designed for electrical systems requiring a 300A molded case circuit breaker.
• 3-pole configuration – Suitable for compatible three-phase electrical equipment.
• HJ frame design – Built for systems that use the HJ frame breaker configuration.
• Type ET 400 Ampere frame – Matches equipment designed around this HJ frame rating.
• 40°C temperature rating – Designed for applications using a 40°C operating environment.
• Molded case construction – Provides the required breaker style and physical configuration for compatible equipment.

Technical Specifications

• Part Number: HJ3B300
  
• Breaker Type: HJ3 Molded Case Circuit Breaker
  
• Frame Type: HJ Frame
  
• Frame Rating: Type ET 400 Ampere
  
• Poles: 3
  
• Amperage Rating: 300 Amps
  
• Temperature Rating: 40°C
  
• A.I.C. Ratings:
  • 25kA at 600VAC
  • 35kA at 480VAC
  • 65kA at 240VAC
• Dimensions: 9.00"W x 11.00"L x 4.00"D
  
• Height/Length: 11.0 inches
  
• Width: 9.0 inches
  
• Depth: 4.0 inches
  
• Approximate Shipping Weight: 23 lbs.
  

Material Compliance and Certifications

The HJ3B300 is a molded case circuit breaker designed for electrical equipment requiring the listed breaker ratings, frame style, and configuration. It is intended for compatible commercial and industrial applications where maintaining the existing equipment setup is important.

Where It Works Best

The HJ3B300 works best in existing electrical distribution equipment that requires a 3-pole, 300-amp HJ frame molded case circuit breaker. It is suited for maintenance and replacement applications involving compatible panels, switchboards, and electrical assemblies designed for this breaker configuration.