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Square D S131A - Solid-State Trip Unit 600V LI Protection

Square D
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Square D S131A is a solid-state trip unit designed for providing long-time and instantaneous overcurrent protection in industrial power distribution systems. It operates at a 600V voltage rating and features LI protection functions for coordinated circuit interruption. The unit is constructed with a compact form factor measuring 78.49 mm in depth and 112.78 mm in width, weighing 1.02 lb, and is UL listed and CSA certified for safety compliance. It is engineered for integration with compatible Square D circuit breaker frames including NS, NT, NW, PG, PJ, PK, PL, RG, RJ, RK, and RL in demanding commercial and industrial applications.

Key Features & Specifications
  • Type: Solid-state trip unit (Micrologic family) for overcurrent protection
  • Voltage Rating: 600V
  • Functions: LI (Long-Time and Instantaneous)
  • Protection: Solid State
  • Dimensions: 78.49 mm (Depth) x 112.78 mm (Width)
  • Weight: 1.02 lb
  • Standards: UL listed, CSA
  • Compatible Frames: NS, NT, NW, PG, PJ, PK, PL, RG, RJ, RK, RL
  • Country of Origin: United States


Product Identification
  • UPC: 785901942740
  • GTIN: 00785901942740