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Siemens JD3B350 - 3 Pole 350A 240V Thermal Magnetic Breaker

Siemens
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Siemens JD3B350 Circuit Breaker - 3 Pole 350A 240V Thermal Magnetic Molded Case The Siemens JD3B350 is a 3-pole molded case circuit breaker from the JD Series, designed for overcurrent protection with long-time and instantaneous (LI) trip functions. It is rated for 240V AC, 350A continuous current, and provides a 65kA interrupting capacity at 240V, ensuring robust fault interruption in industrial power distribution systems. This bolt-on breaker weighs 20 lb and features a thermal magnetic protection mechanism for reliable response to both overloads and short circuits. It complies with industry standards for molded case circuit breakers and is suitable for three-phase applications in commercial and industrial environments. Typical applications include main or feeder protection in panelboards, switchboards, and motor control centers.

Key Features & Specifications
  • Type: Molded Case, JD Series, Thermal Magnetic
  • Voltage Rating: 240V AC
  • Current Rating: 350A
  • Poles: 3
  • Phase: 3
  • AIC Rating: 65kA@240V
  • Connection: Bolt-On
  • Protection: LI - Long-Time and Instantaneous
  • Functions: LI - Long-Time and Instantaneous
  • Weight: 20 lb


Product Identification
  • Manufacturer: Siemens
  • Family: JD Series
  • Type: JD
  • Item Subcategory: Molded Case