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MERSEN FUSE NH3 315KVA 400V GTR SGL MI NH32GTR315KVA-1

MERSEN FUSE NH3 315KVA 400V GTR SGL MI NH32GTR315KVA-1

Mersen NH32GTR315KVA-1 DIN NH size 3 gTr transformer fuse-link rated for 315 kVA transformers, 455 A and 400 V AC with centre indicator and isolated gripping lugs.

SKU: NH32GTR315KVA-1Alt SKU: NH32GTR315KVA-1MPN: D1030541A
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List Price £69.74 ex VAT
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Why Choose the Mersen NH32GTR315KVA-1 Transformer Protection Fuse?

The Mersen NH32GTR315KVA-1 is a DIN NH size 3 gTr fuse-link specifically designed to protect 315 kVA low-voltage distribution transformers. Designed for operation on 400 V AC systems, it delivers dependable transformer protection while withstanding the high magnetising inrush currents that occur during transformer energisation.

The specialised gTr operating characteristic is engineered to match the electrical behaviour of distribution transformers. This provides reliable protection against overloads and short circuits while reducing unnecessary fuse operation during normal transformer energisation. It also offers excellent selectivity with downstream gG fuse-links, helping to maintain system continuity.

Manufactured to the DIN NH standard, the NH32GTR315KVA-1 features a durable ceramic body, blade contacts, isolated gripping lugs and a centre-mounted blown fuse indicator. It is intended for installation in compatible NH fuse bases and transformer switch-fuse assemblies by qualified electrical professionals.

Key Advantages

  • Designed specifically for 315 kVA distribution transformer protection.
  • Specialised gTr characteristic optimised for transformer applications.
  • 455 A rated current for 400 V AC transformer systems.
  • Withstands transformer magnetising inrush currents.
  • Centre-mounted indicator enables rapid fuse status identification.
  • Isolated gripping lugs improve handling safety during replacement.

Key Features

  • Mersen NH gTr transformer protection fuse-link.
  • DIN NH size 3.
  • 315 kVA transformer protection rating.
  • 455 A rated current.
  • 400 V AC rated voltage.
  • gTr transformer protection characteristic.
  • Centre-mounted blown fuse indicator.
  • Isolated gripping lugs.
  • Ceramic fuse body.
  • RoHS compliant construction.

Reliable Protection for Distribution Transformers

Distribution transformers generate high temporary magnetising currents when energised. The Mersen gTr operating characteristic is specifically developed to withstand these normal inrush currents while providing rapid interruption of damaging overload and short-circuit faults.

The NH32GTR315KVA-1 is designed for installation in compatible NH fuse bases and transformer switch-fuse assemblies. Installation and replacement should only be carried out by suitably qualified electrical professionals using approved NH fuse handling equipment.

Typical Applications

  • 315 kVA low-voltage distribution transformers.
  • Transformer switch-fuse units.
  • Industrial substations.
  • Commercial electrical distribution systems.
  • OEM transformer assemblies.
  • Industrial switchgear.
  • Utility power distribution equipment.

Technical Specifications

Voltage 400 V
Manufacturer Mersen
Series NH gTr 400 V Transformer Fuse-Links
Model NH32GTR315KVA-1
Item number D1030541A
Product type NH transformer protection fuse-link
Fuse utilisation category gTr
Fuse size NH3
Transformer rating 315 kVA
Rated current 455 A
Rated voltage 400 V AC
Voltage type AC
Indicator Centre indicator
Gripping lugs Isolated gripping lugs
Body width 72.9 mm
Power dissipation 21 W
Weight Approx. 1 kg
EAN 3605340535785
Compliance RoHS compliant
HS Code 85361090
Country of Manufacture Hungary
Device Type Fuse link
Fuse Type NH (DIN)
Fuse Size NH3
Fuse Class gTr
Current 455 A

Frequently Asked Questions

What is the Mersen NH32GTR315KVA-1 used for?

It is specifically designed to protect 315 kVA low-voltage distribution transformers against overloads and short-circuit faults while accommodating transformer energisation currents.

What transformer size is this fuse intended for?

The NH32GTR315KVA-1 is designed for transformers with a nominal rating of 315 kVA.

What is the rated current of this fuse-link?

The fuse-link has a rated current of 455 A.

What does the gTr characteristic mean?

The gTr characteristic is specifically optimised for transformer protection, allowing normal magnetising inrush currents while providing dependable fault protection and excellent selectivity.

Does this fuse include a blown-fuse indicator?

Yes. The NH32GTR315KVA-1 features a centre-mounted indicator to provide clear visual confirmation when the fuse has operated.

Trusted Transformer Protection Worldwide

Mersen NH gTr transformer fuse-links are trusted by electrical engineers, switchgear manufacturers and utility providers for dependable transformer protection, high current-limiting performance and excellent selectivity in low-voltage power distribution systems.

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