Gould Shawmut A480T1E PT Fuse: Reliable Protection for Potential Transformers
The Gould Shawmut A480T1E is a medium voltage potential transformer (PT) fuse designed to provide superior protection for the primary windings of potential transformers operating at 4.8 kV. As part of Mersen’s Amp-Trap® series, this fuse combines high interrupting capacity with current-limiting features to safeguard electrical equipment effectively.
Key Features
- Current-Limiting Protection: The A480T1E is engineered to limit the amount of energy let through during a fault condition, thereby reducing potential damage to transformers and associated equipment.
- High Interrupting Rating: With an interrupting capacity of 50 kA at 4.8 kV AC, this fuse can handle significant fault currents, ensuring reliable operation in demanding environments.
- Compact and Versatile Design: Featuring a ferrule mounting system, the A480T1E is compatible with standard clips, allowing for easy installation and interchangeability with other fuse brands.
- Durable Construction: The fuse body is made from fiberglass melamine, providing excellent dimensional stability and resistance to harsh industrial conditions.
- Non-Venting Operation: Designed for silent operation, the A480T1E does not vent during fault conditions, maintaining a safe and quiet working environment.
- Clear Identification: Each fuse is metal-embossed with its catalog number and manufacturing date, ensuring lasting identification and traceability.
Specifications
- Voltage Rating: 4.8 kV AC
- Current Rating: 1 A
- Interrupting Rating: 50 kA (Symmetrical) at 4.8 kV AC
- Fuse Class: E-Rated
- Mounting Type: Ferrule
- Body Type: Cylindrical
- Body Dimensions: 13/16 in. diameter x 5-5/8 in. length
- Element: Single
- Indicator: Non-Indicating
Applications
The A480T1E fuse is specifically designed for the primary protection of potential transformers (PTs) and control power transformers (CPTs) in medium voltage applications. Its compact size and high performance make it an ideal choice for safeguarding transformers in various industrial settings.
Compliance and Safety
Mersen’s A480T1E fuse complies with industry standards for medium voltage fuses, ensuring reliable performance and safety. The non-venting design contributes to a safer operational environment by preventing the release of gases or particles during fault conditions.
In summary, the Gould Shawmut A480T1E PT Fuse offers robust protection for potential transformers, combining high interrupting capacity, current-limiting features, and durable construction to meet the demands of modern electrical systems.

















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