J3225 - 225Amp Circuit Breaker

J3225 - 225Amp Circuit Breaker

When you're trying to match a circuit breaker already installed in older equipment, the catalog number is only part of the story. The J3225 circuit breaker is a 225-amp, 3-pole J-frame breaker with a thermal-magnetic, non-interchangeable trip unit. Its interrupting rating is 14k AIC at 480VAC, and the breaker carries a 40°C rating. For compatible legacy systems, the focus is straightforward—match the frame, electrical ratings, trip configuration, terminals, and physical size rather than choosing a breaker based on amperage alone.

Key Features and Benefits

• 225-amp rating: Clearly identifies the breaker's current rating for comparison with existing equipment requirements.
• 3-pole configuration: Provides an important form-and-function specification when identifying a compatible replacement.
• J-frame construction: Type J and J-frame identification help narrow the match when maintaining equipment designed around this breaker configuration.
• Thermal-magnetic operation: Uses the specified thermal-magnetic trip method.
• Non-interchangeable trip unit: A key configuration detail to confirm when matching an existing J-frame breaker.
• Load-side terminals included: The supplied configuration includes load-side terminals.
• 40°C rated: Provides another specific characteristic that can be checked against equipment documentation.
  

Technical Specifications

• Part Number: J3225
  
• Type: J
  
• Frame: J-Frame
  
• Product Type: Circuit Breaker
  
• Amperage: 225 A
  
• Number of Poles: 3
  
• Voltage at Stated Interrupt Rating: 480VAC
  
• A.I.C. Rating: 14k at 480VAC
  
• Interrupting Capacity: 14,000 A at 480VAC
  
• Trip Type: Thermal-Magnetic
  
• Trip Unit: Non-Interchangeable
  
• Temperature Rating: 40°C
  
• Load-Side Terminals: Included
  
• Width: 8.25 in.
  
• Height / Length: 10.13 in.
  
• Depth: 4.00 in.
  
• Overall Dimensions: 8.25"W x 10.13"L x 4.00"D
  
• Approximate Ship Weight: 23.00 lb.
  

Material Compliance and Certifications

No specific UL, CSA, IEC, RoHS, REACH, or other certification or material compliance information was provided for the J3225. Those certifications should therefore not be assumed based on the frame type, amperage, or other electrical characteristics.

Where It Works Best

The J3225 225A circuit breaker makes sense for compatible existing and legacy electrical equipment that specifically calls for a Type J, J-frame, 225A, 3-pole thermal-magnetic breaker with a non-interchangeable trip unit and the stated 14k AIC rating at 480VAC. The included load-side terminals, 40°C rating, and physical dimensions should also be part of the replacement check.