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Merlin Gerin ST308S-LSI-250A - Trip Unit 250A 600V 3-Pole

Merlin Gerin
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Merlin Gerin ST308S-LSI-250A is a Masterpact electronic trip unit designed for precise overcurrent and short-circuit protection in industrial power distribution systems. This solid-state protection device operates at a voltage rating of 600V AC and supports a current range of 250A with three poles. The unit weighs 15 lb and is compatible with M and MP frame air circuit breakers, featuring adjustable long-time, short-time, and instantaneous tripping functions. It complies with industry standards for electronic sensing and control in high-demand electrical environments. Typical applications include industrial power distribution systems requiring reliable and configurable circuit breaker control.

Key Features & Specifications
  • Manufacturer: Merlin Gerin
  • Family: Masterpact
  • Type: ST
  • Functions: LSI - Long-Time, Short-Time and Instantaneous
  • Voltage Rating: 600V AC
  • Poles: 3
  • Amperage: 250A
  • Protection: Solid State
  • Compatible Frames: M, MP
  • Weight: 15 lb
  • Control Unit: Electronic Trip Unit
  • Application: Industrial Power Distribution