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ABB S5N-4P-400A - Molded Case 400A 600V AC (35kA@480V)

ABB
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ABB S5N-4P-400A is a 400 amp, 4-pole molded case circuit breaker from the SACE Isomax S5N family, designed for reliable power distribution and protection. It is rated for 600V AC with a 35kA interrupting capacity at 480V and features a thermal-magnetic trip unit providing LI (Long-Time and Instantaneous) protection functions. The unit weighs 13 lb, utilizes a bolt-on connection, and has a fixed mounting type within an S5 frame size. This breaker complies with UL 489 and CSA 22.2 standards for safety and performance. It is suitable for demanding industrial and commercial applications requiring three-phase power distribution protection.

Key Features & Specifications
  • Manufacturer: ABB
  • Item Subcategory: Molded Case
  • Family: SACE Isomax
  • Type: S5N
  • Weight: 13 lb
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: S5
  • Voltage Rating: 600V AC
  • Poles: 4
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC rating: 35kA at 480V
  • Phase: 3
  • Current Rating: 400A
  • Amperage: 400A
  • Interrupt Rating: 35kA at 480V
  • Trip Unit: PR211 thermal-magnetic
  • Mounting Type: Fixed
  • Certifications: UL 489, CSA 22.2