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Merlin Gerin TM125D-3P - Thermal Magnetic Trip Unit 125A 600V 3-Pole

Merlin Gerin
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Merlin Gerin TM125D-3P is a Compact family thermal-magnetic trip unit designed for LI (Long-Time and Instantaneous) protection in industrial circuit breaker applications. This 3-pole unit operates at a voltage rating of 600V and supports a current rating range of 125A minimum to 125A maximum. The device weighs 1 lb and features a 125A frame size, constructed for integration with compatible frames including NS, NSF, NFNF, NFNL, NFHF, and NFHL. It complies with industry standards for thermal-magnetic overcurrent protection, providing reliable long-time and instantaneous fault response. Typical applications include motor control centers, distribution panels, and industrial power systems requiring precise overcurrent coordination.

Key Features & Specifications
  • Type: Thermal Magnetic Trip Unit
  • Voltage Rating: 600V
  • Current Rating: 125A (Minimum and Maximum)
  • Poles: 3
  • Frame Size: 125
  • Protection: LI - Long-Time and Instantaneous
  • Compatible Frames: NS, NSF, NFNF, NFNL, NFHF, NFHL
  • Weight: 1 lb
  • Family: Compact
  • Item Subcategory: Trip Units & Programmers


Product Identification
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