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ABB SS-3 - Solid-State Trip Unit 600V 250-600A (LI Protection)

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ABB SS-3 is a solid-state trip unit designed for overcurrent protection in low-voltage power distribution systems. It provides long-time and instantaneous (LI) protection functions with a voltage rating of 600V and an adjustable current range from 250A to 600A. This three-pole unit weighs 4 lb and is engineered for seamless integration with K-Line circuit breaker frames. It complies with industry standards for solid-state protection and is compatible with K/K-Don600S/800S/1600S and K2000S frames. Typical industrial applications include motor control centers, switchboards, and distribution panels requiring precise, adjustable protection.

Key Features & Specifications
  • Type: Solid-state trip unit, LI (Long-Time and Instantaneous) functions
  • Voltage Rating: 600V
  • Current Rating: 250A to 600A (adjustable)
  • Poles: 3
  • Protection: Solid State
  • Compatible Frames: K/K-Don600S/800S/1600S, K2000S
  • Weight: 4 lb
  • Family: K-Line


Product Identification
  • Manufacturer: ABB
  • Model: SS-3