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ABB S3N150TW-4 - Molded Case Circuit Breaker 150A 600V 4-Pole

ABB
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ABB S3N150TW-4 is a 4-pole molded case circuit breaker from the SACE Isomax family, designed for primary overcurrent protection in electrical distribution systems. It delivers a rated current of 150A at a voltage rating of 600VAC, with a 25kA interrupting capacity at 480VAC for robust fault handling. The unit features a thermal-magnetic trip mechanism with LI (Long-Time and Instantaneous) functions, housed in a compact S3 frame with a bolt-on connection and weighing 8 lb. This breaker complies with industry standards for molded case construction, ensuring reliable performance in demanding environments. Typical applications include industrial and commercial power distribution, motor control centers, and panelboard installations.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Family: SACE Isomax
  • Frame Size: S3
  • Poles: 4
  • Current Rating: 150A
  • Voltage Rating: 600V
  • Interrupting Capacity: 25kA@480V
  • Protection: Thermal Magnetic
  • Trip Functions: LI - Long-Time and Instantaneous
  • Connection: Bolt-On
  • Phase: 3
  • Weight: 8 lb
  • Construction: Molded Case
  • Trip Mechanism: Non-interchangeable