JDB3250 - 250A Circuit Breaker

JDB3250 - 250A Circuit Breaker

For the JDB3250, the electrical ratings provide a useful starting point for confirming your replacement: 250A, three-pole, 600VAC/250VDC, 65 kAIC at 240VAC, and 35 kAIC at 480VAC. This Eaton Series C molded-case circuit breaker uses a J frame, JDB breaker type, and T186 trip type, and is supplied as a complete breaker. Aluminum terminals are included on both the line and load sides, an important detail when comparing the connection arrangement with equipment already in service. The JDB3250 is built to last, while selecting it for existing or legacy equipment still comes down to a careful form, fit, and functional comparison of the complete specification set.

Key Features and Benefits

• 250A, three-pole configuration provides clearly defined electrical characteristics for replacement matching.
• JDB breaker type with a J frame helps narrow compatibility with existing electrical equipment.
• Uses the manufacturer-specified T186 trip type.
• Supplied as a complete Series C molded case circuit breaker.
• Aluminum line and load terminals are included, providing a known termination configuration for comparison with the existing installation.
• Rated for 600VAC and 250VDC operation at 50–60 Hz.
• UL Listed according to the supplied manufacturer specifications.
  

Technical Specifications

• Catalog Number: JDB3250
  
• Manufacturer: Eaton
  
• Product Name: Series C complete molded case circuit breaker
  
• Product Type: Molded case circuit breaker
  
• Series: Series C
  
• Circuit Breaker Type: JDB
  
• Frame: J
  
• Circuit Breaker Frame Type: Complete breaker
  
• Amperage Rating: 250A
  
• Number of Poles: Three-pole
  
• Voltage Rating: 600VAC, 250VDC
  
• Frequency Rating: 50–60 Hz
  
• Trip Type: T186
  
• Interrupt Rating at 240VAC: 65 kAIC
  
• Interrupt Rating at 480VAC: 35 kAIC
  
• Terminals: Line and load
  
• Terminal Material: Aluminum
  
• Product Width: 4.13 in.
  
• Product Height: 4.13 in.
  
• Product Length / Depth: 4.06 in.
  
• Product Weight: 9.22 lb
  
• UPC: 786679516348
  
• Certification: UL Listed
  

Material Compliance and Certifications

The JDB3250 is UL Listed in accordance with the supplied manufacturer specifications. No additional material or environmental compliance information was provided for this catalog number; therefore, no additional certifications or compliance claims should be assumed.

Where It Works Best

The JDB3250 250A circuit breaker is suited to compatible existing and legacy electrical equipment that specifically requires a three-pole Series C JDB breaker with a J frame and T186 trip type. Because this model includes aluminum terminals on both the line and load sides, the existing conductor and termination requirements should be checked during the compatibility review.