Why Choose the Mersen NH4AGTR200KVA-8 Transformer Fuse-Link?
The Mersen NH4AGTR200KVA-8 is a heavy-duty DIN NH gTr transformer protection fuse-link developed to provide reliable protection for low voltage distribution transformers against overload and short-circuit faults. Manufactured by Mersen, this NH4a fuse-link is specifically engineered to match the operating characteristics of transformers, delivering dependable protection whilst accommodating normal transformer energisation currents.
Part of the proven Mersen NH gTr 400 V AC fuse-link series, the NH4AGTR200KVA-8 is designed for transformers with a nominal capacity of 200 kVA. It features a 289 A rated current, 400 V AC operating voltage, top indicator and live gripping lugs, allowing safe installation and efficient maintenance in industrial power distribution systems.
Its NH4a construction offers excellent fault interruption capability and dependable long-term performance, making it ideal for transformer panels, substations, industrial switchboards and commercial electrical installations requiring dedicated transformer protection.
Key Advantages
- Purpose-designed gTr fuse-link for transformer protection.
- Suitable for 200 kVA low voltage transformers.
- 289 A rated current for transformer applications.
- 400 V AC operating voltage.
- Top indicator enables rapid identification of an operated fuse.
- Live gripping lugs support safe replacement using an approved NH fuse puller.
- High breaking capacity for demanding industrial electrical systems.
- Designed in accordance with IEC NH fuse standards.
Key Features
- Mersen NH gTr transformer protection fuse-link series.
- Catalogue number: NH4AGTR200KVA-8.
- Mersen item number: H1028728.
- Fuse size: NH4a.
- Transformer capacity: 200 kVA.
- Rated current: 289 A.
- Rated voltage: 400 V AC.
- Utilisation category: gTr.
- Top operated-fuse indicator.
- Live gripping lugs.
- Blade contact construction.
- Body width approximately 72.9 mm.
Reliable Protection for Distribution Transformers
The Mersen NH4AGTR200KVA-8 is engineered specifically for transformer protection. Its gTr operating characteristic accommodates transformer magnetising inrush currents whilst providing dependable protection against overloads and high prospective short-circuit faults, helping maximise transformer service life and system reliability.
The fuse-link should be installed in a compatible NH4a fuse base and handled only by qualified electrical personnel using an approved NH fuse replacement device and suitable personal protective equipment.
Typical Applications
- 200 kVA low voltage distribution transformers.
- Industrial transformer panels.
- Commercial power distribution systems.
- Electrical substations.
- Industrial switchboards.
- Manufacturing and process facilities.
