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Siemens JD2B300 - Molded Case Circuit Breaker 300A 2-Pole 240V

Siemens
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Siemens JD2B300 is a 2-pole, 300A molded case circuit breaker from the Sentron Series, designed for thermal-magnetic protection with LI (Long-Time and Instantaneous) trip functions. It operates at 240V with a 65kA interrupting capacity at that voltage, supporting 1-phase systems within a temperature range of -13°F to 158°F (-25°C to 70°C). The unit features a JD frame size, bolt-on connection, and weighs 20 lb, ensuring robust construction for panelboard and switchgear integration. It complies with RoHS standards and holds UL and IEC certifications for reliable performance in demanding environments. This breaker is suited for industrial and commercial applications requiring dependable overcurrent protection.

Key Features & Specifications
  • Type: Molded Case
  • Family: Sentron Series
  • Type: JD
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: JD Frame
  • Voltage Rating: 240V
  • Current Rating: 300A
  • Poles: 2
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC rating: 65kA@240V
  • Phase: 1
  • Temp Rating: -13°F-158°F (-25°C - 70°C)
  • Weight: 20 lb
  • Standards: RoHS
  • Certification: UL, IEC