C390 - 90Amp Circuit Breaker

C390 - 90Amp Circuit Breaker

The C390 is a 90 Amp, 3-pole circuit breaker used in three-phase electrical systems where all phases need to trip together during a fault condition. Its common-trip design opens all three poles simultaneously, making it a common choice for protecting motors, HVAC equipment, distribution panels, and other three-phase loads.

With a plug-on mounting configuration, the C390 is often used as a replacement breaker in existing equipment or during panel maintenance projects.

The breaker is HACR rated, allowing it to be used in heating, air conditioning, and refrigeration systems where this type of protection is commonly specified.

Whether you're installing it in a warehouse, office building, manufacturing facility, or retail property, the C390 is frequently used where a 90 Amp, 3-pole common-trip breaker is required to match existing electrical equipment and system specifications.

Key Features and Benefits

• 90 Amp current rating
• Three-pole configuration for three-phase systems
• Common-trip operation
• Plug-on mounting design
• Type C circuit breaker
• HACR rated
• 10kA interrupting capacity at 240VAC
• Suitable for branch circuit and equipment protection
• Commonly used in commercial and industrial electrical systems
• Frequently selected for maintenance and replacement applications
  

Technical Specifications

• Part Number: C390
  
• Type: C
  
• Amperage Rating: 90 Amps
  
• Number of Poles: 3
  
• Trip Type: Common Trip
  
• Mounting Method: Plug-On
  
• Voltage Rating: 240VAC
  
• Interrupting Capacity: 10kA
  
• HACR Rated: Yes
  
• Dimensions:
  • Width: 3.00 in.
  • Height: 2.88 in.
  • Depth: 2.56 in.
• Dimensions: 3.00"W × 2.88"H × 2.56"D
  
• Approximate Shipping Weight: 1.75 lbs
  

Material Compliance and Certifications

• HACR Rated
• Thermal-magnetic circuit breaker construction
• Manufactured for use in compatible electrical distribution equipment
• Intended for overcurrent and short-circuit protection applications
  

Where It Works Best

• The C390 is commonly found in commercial buildings, warehouses, manufacturing facilities, schools, healthcare facilities, and other locations utilizing three-phase electrical service. Typical applications include HVAC systems, motor circuits, refrigeration equipment, machinery, panel distribution equipment, and dedicated branch circuits.