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MERSEN FUSE NH3C 50KVA 400V GTR TI NH3GTR50KVA-8

MERSEN FUSE NH3C 50KVA 400V GTR TI NH3GTR50KVA-8

Mersen NH3GTR50KVA-8 DIN NH size 3 gTr transformer protection fuse-link rated at 72 A, 400 V AC for 50 kVA transformers.

SKU: NH3GTR50KVA-8Alt SKU: NH3GTR50KVA-8MPN: K1028707A
Price
List Price £46.66 ex VAT
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Why Choose the Mersen NH3GTR50KVA-8 Transformer Fuse-Link?

The Mersen NH3GTR50KVA-8 is a high-performance DIN NH size 3 gTr transformer protection fuse-link designed specifically for protecting low voltage transformers against short-circuit faults and overload conditions. Rated for 400 V AC, it is optimised for the protection of 50 kVA distribution transformers and is ideal for industrial power distribution systems, transformer panels and electrical substations.

Its specialised gTr utilisation characteristic has been developed specifically for transformer protection, providing superior coordination with transformer inrush currents while maintaining fast fault interruption during genuine short-circuit conditions. This improves system selectivity compared with standard gG fuse-links.

The NH3GTR50KVA-8 features a robust ceramic body, top indicator, live gripping lugs and standard NH size 3 blade contacts. It is intended for installation in compatible NH fuse bases and fuse-switch disconnectors by qualified electrical professionals.

Key Advantages

  • Designed specifically for 50 kVA transformer protection.
  • gTr characteristic optimised for transformer applications.
  • 400 V AC rated operation.
  • Current-limiting design reduces damaging fault energy.
  • Top-mounted operating indicator for quick fuse identification.
  • Live gripping lugs for safe handling using an approved NH fuse puller.
  • Compatible with standard NH size 3 fusegear.

Key Features

  • Mersen DIN NH gTr transformer fuse-link.
  • Catalogue number: NH3GTR50KVA-8.
  • Manufacturer item number: K1028707A.
  • Fuse size: NH3.
  • Transformer rating: 50 kVA.
  • Rated current: 72 A.
  • Rated voltage: 400 V AC.
  • Utilisation category: gTr.
  • Top indicator.
  • Live gripping lugs.

Reliable Transformer Protection

Transformer circuits require specialised protection capable of withstanding energisation inrush currents while still providing rapid disconnection during fault conditions. The Mersen NH3GTR50KVA-8 is specifically engineered for this purpose, delivering excellent protection and coordination for low voltage distribution transformers.

The gTr characteristic improves discrimination with upstream and downstream protection devices, helping maintain supply continuity while protecting transformers and associated distribution equipment from damaging fault currents.

Typical Applications

  • 50 kVA distribution transformers.
  • Industrial transformer panels.
  • Low voltage substations.
  • Power distribution switchboards.
  • OEM transformer assemblies.
  • NH size 3 fuse bases and fuse-switch disconnectors.

Technical Specifications

Voltage 400 V
Manufacturer Mersen
Series NH gTr Transformer Fuse-Links
Model NH3GTR50KVA-8
Manufacturer item number K1028707A
EAN 3605340534443
Product type DIN NH transformer protection fuse-link
Fuse size NH3
Utilisation category gTr
Transformer nominal capacity 50 kVA
Rated current 72 A
Rated voltage 400 V AC
Voltage type AC
Body width 50 mm
Power dissipation at rated current 5.5 W
Weight Approximately 1 kg
Indicator type Top indicator
Gripping lugs Live gripping lugs
Body material Ceramic
RoHS compliant Yes
HS Code 85361090
Country of Manufacture Hungary
Device Type Fuse link
Fuse Type NH (DIN)
Fuse Size NH3
Fuse Class gTr
Current 72 A

Frequently Asked Questions

What is the Mersen NH3GTR50KVA-8 used for?

It is designed specifically to protect 50 kVA low voltage transformers against overloads and short-circuit faults.

What is the rated current of this fuse-link?

The NH3GTR50KVA-8 has a rated current of 72 A.

What does the gTr characteristic mean?

The gTr characteristic is specifically developed for transformer protection, allowing transformer magnetising inrush currents while providing rapid fault interruption.

What voltage is this fuse-link rated for?

The NH3GTR50KVA-8 is rated for operation at up to 400 V AC.

Where is this fuse-link installed?

It is installed in compatible NH size 3 fuse bases or fuse-switch disconnectors by qualified electrical personnel using approved NH fuse pullers.

Trusted by Electrical Professionals Worldwide

Mersen NH gTr transformer fuse-links are trusted by utilities, panel builders, OEMs and industrial engineers for dependable transformer protection, excellent current limitation and long-term reliability in demanding electrical distribution systems.

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