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ABB S5N300TW-2 - Molded Case Circuit Breaker 300A 600V 2-Pole

ABB
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ABB S5N300TW-2 is a 2-pole molded case circuit breaker from the SACE Isomax family, designed for overload and short-circuit protection via its LI (Long-Time and Instantaneous) thermal-magnetic trip unit. Rated at 300A and 600V, this single-phase device delivers a 35kA interrupting capacity at 480V, ensuring robust fault current handling in industrial power distribution systems. Weighing 12 lb, the S5N frame breaker features a bolt-on connection for secure fixed mounting, with a compact construction suited for panelboard installations. It complies with UL 489 standards for molded case circuit breakers, providing reliable performance in commercial and industrial environments. Typical applications include feeder protection, motor control centers, and main switchboards requiring dependable overcurrent protection.

Key Features & Specifications
  • Type: Molded Case
  • Family: SACE Isomax
  • Type: S5N
  • Frame Size: S5
  • Poles: 2
  • Phase: 1
  • Current Rating: 300A
  • Voltage Rating: 600V
  • Interrupt Rating: 35kA @ 480V
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Connection: Bolt-On
  • Weight: 12 lb
  • Standards: UL 489


Part Number: S5N300TW-2