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Siemens JJ63B250 - Molded Case 250A 600V 3-Pole

Siemens
Price
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Siemens JJ63B250 is a 3-pole molded case circuit breaker from the JJ Frame family, designed for overcurrent protection in industrial power distribution systems. It operates at 600V with a 250A continuous current rating and provides LI (Long-Time and Instantaneous) protection functions through a thermal magnetic trip mechanism. This bolt-on breaker weighs 22 lb and features a robust molded case construction suitable for panelboard and switchboard installations. It complies with industry standards and carries a 25kA interrupting capacity at 480V for reliable fault clearing. Typical applications include motor control centers, distribution panels, and heavy industrial equipment requiring 3-phase protection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, JJ Frame, Thermal Magnetic
  • Voltage Rating: 600V AC
  • Current Rating: 250A
  • Poles: 3
  • Phase: 3
  • AIC Rating: 25kA @ 480V
  • Connection: Bolt-On
  • Protection: LI - Long-Time and Instantaneous
  • Weight: 22 lb
  • Functions: LI - Long-Time and Instantaneous
  • Family: JJ Frame
  • Type: JJ
  • Item Subcategory: Molded Case


Product Identification
  • Manufacturer: Siemens
  • Model: JJ63B250