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Siemens CKL3B300 - Molded Case Breaker 300A 600V

Siemens
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The Siemens CKL3B300 is a 3-pole molded case circuit breaker from the Cordon family, designed for thermal magnetic protection with long-time and instantaneous (LI) trip functions. It is rated for 600V AC, 300A continuous current, and delivers a 100kA interrupting capacity at 480V, making it suitable for high-fault industrial power distribution. This bolt-on breaker weighs 35 lb and features a compact molded case construction for secure panel mounting in 3-phase systems. It complies with UL and NEMA standards for overcurrent protection in commercial and industrial environments. Typical applications include main or feeder protection in switchboards, panelboards, and motor control centers.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic, LI (Long-Time and Instantaneous) Trip
  • Voltage Rating: 600V AC
  • Current Rating: 300A
  • Poles: 3
  • Phase: 3
  • AIC Rating: 100kA@480V
  • Connection: Bolt-On
  • Weight: 35 lb
  • Family: Cordon
  • Functions: LI - Long-Time and Instantaneous
  • Protection: Thermal Magnetic
  • Item Subcategory: Molded Case


Product Identification
  • UPC: Not available
  • GTIN: Not available