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Merlin Gerin 685518A - Neutral Sensor for Masterpact (4 lb)

Merlin Gerin
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Merlin Gerin 685518A is a neutral sensor component designed for use within the Masterpact family of circuit breakers, providing critical ground-fault and neutral current detection for enhanced protection. This sensor operates within the electrical specifications of the Masterpact system, typically supporting voltages up to 690V AC and current ratings up to 6300A, depending on the breaker frame. The unit weighs 4 lb and is constructed as a compact, modular accessory that integrates directly into the breaker's neutral conductor path for accurate sensing. It complies with international standards such as IEC 60947-2 and UL 489, ensuring reliable performance in industrial environments. This neutral sensor is commonly applied in low-voltage power distribution systems for commercial and industrial facilities requiring precise neutral current monitoring.

Key Features & Specifications
  • Type: Neutral sensor for Masterpact breakers
  • Voltage Rating: Up to 690V AC
  • Current Rating: Up to 6300A (system dependent)
  • Weight: 4 lb
  • Standards: IEC 60947-2, UL 489
  • Applications: Ground-fault protection, neutral current sensing in industrial power distribution
  • Family: Masterpact
  • Type: 685
  • Section: Neutral Sensors
  • Item Subcategory: Parts & Accessories


Product Identification
  • Manufacturer: Merlin Gerin
  • Model: 685518A