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Siemens JL3B300 - 300A 3-Pole 600V Thermal Magnetic Breaker

Siemens
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Siemens JL3B300 Circuit Breaker - 300A 3-Pole 600V Thermal Magnetic The Siemens JL3B300 is a 3-pole molded case circuit breaker from the JL Series, designed for overcurrent protection in industrial power distribution systems. It provides LI (Long-Time and Instantaneous) protection functions with a voltage rating of 600V and a current rating of 300A, featuring a bolt-on connection and a thermal magnetic trip mechanism. This unit weighs 24 lb and is constructed for robust performance in demanding environments. It complies with industry standards and carries an AIC rating of 35kA at 480V, making it suitable for three-phase applications. Typical industrial applications include motor control centers, panelboards, and switchboards requiring reliable circuit protection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, JL Series, Thermal Magnetic
  • Voltage Rating: 600V AC
  • Current Rating: 300A
  • Poles: 3
  • Phase: 3
  • Connection: Bolt-On
  • Protection: LI - Long-Time and Instantaneous
  • AIC Rating: 35kA@480V
  • Weight: 24 lb
  • Functions: LI - Long-Time and Instantaneous
  • Family: JL Series
  • Type: JL
  • Item Subcategory: Molded Case
  • Manufacturer: Siemens


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