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Siemens JL2B300 - 300A Molded Case Circuit Breaker (2-Pole, 600V)

Siemens
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The Siemens JL2B300 is a 2-pole, 300A molded case circuit breaker from the JL Series, designed to provide thermal-magnetic protection for electrical circuits. This unit operates at a voltage rating of 600V and a current rating of 300A, with an AIC rating of 35kA at 480V, and offers LI (Long-Time and Instantaneous) protection functions. It features a bolt-on connection and a single-phase configuration, weighing 24 lb. The breaker complies with industry standards for industrial applications, typically used in distribution panels and switchboards for overload and short-circuit protection.

Key Features & Specifications
  • Type: Molded Case, Thermal Magnetic
  • Voltage Rating: 600V
  • Current Rating: 300A
  • Poles: 2
  • Connection: Bolt-On
  • Protection: LI - Long-Time and Instantaneous
  • AIC rating: 35kA@480V
  • Phase: 1
  • Weight: 24 lb
  • Family: JL Series
  • Functions: LI - Long-Time and Instantaneous
  • Standards: Industry standard for molded case breakers
  • Applications: Industrial distribution panels, switchboards


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