Why Choose the Mersen NH32GTR500KVA Transformer Fuse-Link?
The Mersen NH32GTR500KVA is a high-performance DIN NH gTr transformer protection fuse-link designed to protect low voltage distribution transformers against overload and short-circuit faults. Manufactured by Mersen, this specialised fuse-link combines dependable full-range protection with characteristics matched to the thermal loading requirements of transformers.
Part of the established Mersen NH gTr 400 V AC fuse-link series, the NH32GTR500KVA is designed for transformers with a nominal capacity of 500 kVA. It has a rated current of 722 A, a rated voltage of 400 V AC and an NH3 body size with standard blade contacts for installation in compatible NH fuse bases.
The fuse-link features live gripping lugs and a centre indicator, helping qualified maintenance personnel identify an operated fuse and replace it using an approved NH fuse puller. Its robust construction and high breaking capacity make it suitable for transformer distribution boards, substations and demanding industrial power systems.
Key Advantages
- Specially designed gTr fuse-link for transformer protection.
- Suitable for transformers with a nominal capacity of 500 kVA.
- 722 A rated current matched to transformer applications.
- 400 V AC operating voltage for low voltage distribution systems.
- Full-range protection against overload and short-circuit currents.
- High 100 kA breaking capacity for demanding fault conditions.
- Centre indicator assists with rapid identification of an operated fuse-link.
- Live gripping lugs support replacement using an approved insulated fuse puller.
Key Features
- Mersen NH gTr transformer protection fuse-link series.
- Catalogue number: NH32GTR500KVA.
- Mersen item number: H1028705A.
- Transformer nominal capacity: 500 kVA.
- Fuse size: NH3.
- Rated current: 722 A.
- Rated voltage: 400 V AC.
- gTr utilisation category for full-range transformer protection.
- 100 kA rated breaking capacity.
- Centre operated-fuse indicator.
- Live gripping lugs.
- Standard NH blade contacts.
- 71 mm body width.
Reliable Protection for Distribution Transformers
The Mersen NH32GTR500KVA is designed specifically around the operating characteristics of low voltage transformers. Its gTr time-current performance allows it to tolerate normal transformer inrush currents while providing effective protection against sustained overloads and high-level short-circuit faults.
Correct fuse selection is essential for transformer protection and coordination with upstream and downstream protective devices. The NH32GTR500KVA should be installed in a compatible NH3 fuse base and handled only by qualified electrical professionals using suitable personal protective equipment and an approved NH fuse replacement device.
Typical Applications
- 500 kVA low voltage distribution transformers.
- Industrial transformer switchboards.
- Commercial power distribution systems.
- Electrical substations and transformer panels.
- Factory and process-plant power networks.
- Infrastructure and building-services distribution systems.
