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Schneider Electric Merlin Gerin S144E - Solid-State Trip Unit LSIG 600V

Merlin Gerin
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Schneider Electric Merlin Gerin S144E is a solid-state trip unit designed for comprehensive circuit protection in industrial power distribution systems. It provides advanced LSIG protection—integrating Long-Time, Short-Time, Instantaneous, and Ground Fault functions—for circuits rated up to 600V AC. The unit is engineered for compatibility with a wide range of breaker frames including NS, NT, NW, PG, PJ, PK, PL, RG, RJ, RK, and RL, and its compact, modular construction facilitates integration into existing switchgear. It meets relevant industry standards for performance and safety, making it suitable for critical applications in manufacturing plants, data centers, and commercial facilities where reliable selective coordination and fault protection are required.

Key Features & Specifications
  • Type: Solid-State Trip Unit (Micrologic Family), S144E model
  • Voltage Rating: 600V AC
  • Protection Functions: LSIG (Long-Time, Short-Time, Instantaneous, Ground Fault)
  • Compatible Frames: NS, NT, NW, PG, PJ, PK, PL, RG, RJ, RK, RL
  • Protection Type: Solid State
  • Item Subcategory: Trip Units & Programmers
  • Weight: 1 lb


Product Identification
  • Manufacturer Part Number: S144E