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Merlin Gerin ST308S-LS-400A - Trip Unit 400A 600V 3-Pole

Merlin Gerin
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Merlin Gerin ST308S-LS-400A is a Masterpact circuit breaker trip unit designed for precise overload and short circuit protection in industrial and commercial power systems. This solid-state trip unit operates at 600 volts with a fixed amperage rating of 400A and features 3 poles for three-phase applications. The unit weighs 15 lb and is compatible with M and MP Masterpact frames, providing long-time and short-time (LS) protection functions. It is engineered to meet rigorous industrial standards for reliable performance in demanding environments. Typical applications include protecting electrical distribution systems in manufacturing facilities, data centers, and commercial buildings.

Key Features & Specifications
  • Manufacturer: Merlin Gerin
  • Part Number: ST308S-LS-400A
  • Family: Masterpact
  • Type: ST
  • Functions: LS - Long-Time and Short-Time
  • Voltage Rating: 600V
  • Amperage: 400A fixed
  • Poles: 3
  • Protection: Solid State
  • Compatible Frames: M, MP
  • Weight: 15 lb