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Schneider Electric S133B - Solid-State Trip Unit 600V LSI Protection

Schneider Electric
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Schneider Electric S133B is a solid-state trip unit designed for advanced circuit protection in industrial power distribution systems. It provides comprehensive LSI (Long-Time, Short-Time, and Instantaneous) protection functions for circuit breakers, operating with a voltage rating of 600V. The unit is engineered for durability with a compact, modular design and a weight of 1 lb, ensuring reliable integration into compatible breaker frames. It meets rigorous industry standards for electrical protection devices. Typical applications include protecting feeders and main circuits in commercial and industrial facilities, where precise and adjustable fault current interruption is critical.

Key Features & Specifications
  • Type: Solid-state electronic trip unit (Micrologic family)
  • Voltage Rating: 600V
  • Functions: LSI - Long-Time, Short-Time, and Instantaneous protection
  • Protection: Solid State
  • Compatible Frames: NS, NT, NW, PG, PJ, PK, PL, RG, RJ, RK, RL
  • Item Subcategory: Trip Units & Programmers
  • Weight: 1 lb


Product Identification
  • Manufacturer Part Number: S133B