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Siemens JD3B300 - Molded Case 300A 3-Pole 240V

Siemens
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Siemens JD3B300 Circuit Breaker - Molded Case 300A 3-Pole 240V Thermal Magnetic The Siemens JD3B300 is a 3-pole molded case circuit breaker from the JD Series, designed to provide LI (Long-Time and Instantaneous) protection for industrial electrical systems. It is rated for 240V AC, 300A continuous current, and delivers a 65kA interrupting capacity at 240V, ensuring robust fault interruption. This bolt-on unit weighs 20 lb and features a thermal magnetic trip mechanism for reliable overcurrent and short-circuit protection. It complies with industry standards for molded case circuit breakers, making it suitable for use in distribution panels and switchboards. Typical applications include protecting feeders, motors, and branch circuits in commercial and industrial power distribution systems.

Key Features & Specifications
  • Type: Molded Case, JD Series, 3-Phase
  • Voltage Rating: 240V AC
  • Current Rating: 300A
  • Poles: 3
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC Rating: 65kA@240V
  • Functions: LI - Long-Time and Instantaneous
  • Weight: 20 lb
  • Standards: UL 489, CSA C22.2 No. 5
  • Applications: Industrial power distribution, feeder protection, motor circuits


Product Identification
  • UPC: 783643001234
  • GTIN: 00783643001234