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MERSEN FUSE NH4AC 315KVA 400V GTR MI NH4AGTR315KVA

MERSEN FUSE NH4AC 315KVA 400V GTR MI NH4AGTR315KVA

Mersen NH4AGTR315KVA DIN NH4a gTr fuse-link for 315 kVA transformer protection, rated 455 A and 400 V AC.

SKU: NH4AGTR315KVAAlt SKU: NH4AGTR315KVAMPN: C1028723
Price
List Price £176.12 ex VAT
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£176.12
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Manufacturer Lead Time

£176.12

Why Choose the Mersen NH4AGTR315KVA Transformer Protection Fuse?

The Mersen NH4AGTR315KVA is a high-performance DIN NH gTr fuse-link specifically engineered to protect low voltage distribution transformers against overloads and short circuits. As part of the trusted Mersen NH gTr transformer protection range, it delivers coordinated protection that closely matches transformer characteristics, helping maximise reliability and minimise unnecessary fuse operation.

Manufactured to IEC and DIN NH standards, this NH4a size fuse-link features live gripping lugs and a centre-mounted operation indicator for rapid visual inspection and straightforward replacement by qualified personnel. Its robust ceramic construction and high interrupting capacity make it suitable for demanding industrial and utility installations.

Designed for the protection of 315 kVA distribution transformers, the NH4AGTR315KVA has a 455 A rated current and a 400 V AC operating voltage, making it an ideal solution for transformer feeders in commercial and industrial electrical distribution systems.

Key Advantages

  • Purpose-designed gTr characteristic for transformer protection.
  • Suitable for protecting 315 kVA distribution transformers.
  • 455 A rated current for high-power applications.
  • 400 V AC rated voltage.
  • High breaking capacity for dependable fault interruption.
  • Centre-mounted indicator provides fast visual fuse status confirmation.

Key Features

  • Mersen NH gTr transformer fuse-link series.
  • Catalogue number: NH4AGTR315KVA.
  • Transformer rating: 315 kVA.
  • 455 A rated current.
  • 400 V AC IEC rated voltage.
  • DIN NH Size NH4a.
  • gTr utilisation category.
  • Centre-mounted operation indicator.
  • Live gripping lugs.
  • Body width approximately 72.9 mm.
  • RoHS compliant.

Reliable Protection for Distribution Transformers

The Mersen NH4AGTR315KVA is specifically engineered for transformer protection applications. Its gTr time-current characteristic is optimised to coordinate with transformer operating characteristics, providing dependable fault protection while reducing the likelihood of nuisance fuse operation during transformer energisation.

Its robust NH construction, high fault interruption capability and compliance with recognised international standards make it an excellent choice for transformer substations, industrial power distribution systems and utility infrastructure.

Typical Applications

  • Low voltage distribution transformers.
  • Industrial substations.
  • Commercial electrical distribution systems.
  • Utility transformer protection.
  • OEM switchgear assemblies.
  • Power distribution infrastructure.

Technical Specifications

Voltage 400 V
Manufacturer Mersen
Series NH Fuse-links gTr 400 VAC
Model NH4AGTR315KVA
Item number C1028723
Product type DIN NH transformer fuse-link
Fuse characteristic gTr
Fuse size NH4a
Transformer rating 315 kVA
Rated current 455 A
Rated voltage 400 V AC
Indicator Centre indicator
Gripping lugs Live gripping lugs
Body width 72.9 mm
Power dissipation 32 W
Weight Approx. 2.2 kg
Compliance IEC / DIN NH, RoHS
HS Code 85361090
Country of Manufacture Hungary
Device Type Fuse link
Fuse Type NH (DIN)
Fuse Size NH4a
Fuse Class gTr
Current 455 A

Frequently Asked Questions

What is the Mersen NH4AGTR315KVA used for?

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

What does the gTr fuse characteristic mean?

The gTr characteristic is specifically developed for transformer protection, providing time-current performance matched to transformer operating characteristics.

What is the rated current of this fuse?

The NH4AGTR315KVA has a rated current of 455 A.

What transformer size is this fuse intended for?

This model is designed for the protection of 315 kVA distribution transformers.

Does this fuse include an operation indicator?

Yes. It incorporates a centre-mounted indicator that allows quick visual confirmation when the fuse has operated.

Trusted by Power Distribution Professionals Worldwide

Mersen NH transformer fuse-links are widely specified by utilities, panel builders and electrical engineers for dependable transformer protection, high reliability and long service life in demanding power distribution applications.

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