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Schneider Electric STR23SE - Solid-State Trip Unit 600V 250-600A

Merlin Gerin
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Schneider Electric STR23SE is a solid-state trip unit designed for LSI protection—long-time, short-time, and instantaneous—within Compact family circuit breakers. It operates at a voltage rating of 600V and supports an adjustable amperage range from 250A minimum to 600A maximum across three poles. The unit weighs 2 lb and is compatible with DG, DJ, DL, NS, NSJ, NJNF, NJNL, NJHF, and NJHL frames. It complies with industry standards for solid-state overcurrent protection in industrial power distribution systems. Typical applications include motor control centers, switchboards, and panelboards requiring precise, adjustable trip settings for feeder and main circuit protection.

Key Features & Specifications
  • Type: Solid-state trip unit with LSI functions
  • Voltage Rating: 600V
  • Current Rating: 250A minimum to 600A maximum
  • Poles: 3
  • Protection: Solid State
  • Functions: Long-Time, Short-Time, and Instantaneous
  • Compatible Frames: DG, DJ, DL, NS, NSJ, NJNF, NJNL, NJHF, NJHL
  • Weight: 2 lb


Product Identification
  • Manufacturer: Schneider Electric
  • Family: Compact
  • Type: STR
  • Item Subcategory: Trip Units & Programmers