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Siemens JL63T300 - Thermal Magnetic Trip Unit 300A 600V 3-Pole

Siemens
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Siemens JL63T300 Circuit Breaker is a thermal magnetic trip unit designed for overcurrent protection in industrial power distribution systems. It operates at a voltage rating of 600V with a current rating of 300A, providing long-time and instantaneous (LI) protection functions. This 3-pole unit weighs 6 lb and is constructed for integration with JL series frames. It complies with industry standards for thermal magnetic protection in high-amperage applications. Typical applications include motor control centers, switchboards, and panelboards requiring reliable overcurrent protection.

Key Features & Specifications
  • Type: Trip Unit & Programmer
  • Voltage Rating: 600V
  • Current Rating: 300A (Minimum 300A, Maximum 300A)
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Compatible Frames: JL
  • Weight: 6 lb
  • Family: JL Series
  • Item Subcategory: Trip Units & Programmers


Product Identification
  • Manufacturer: Siemens
  • Model: JL63T300