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MERSEN FUSE NH3C 125KVA 400V GTR MI NH3GTR125KVA

MERSEN FUSE NH3C 125KVA 400V GTR MI NH3GTR125KVA

Mersen NH3GTR125KVA DIN NH3 gTr transformer protection fuse-link rated 180 A and 400 V AC for 125 kVA transformers with centre indicator and live gripping lugs.

SKU: NH3GTR125KVAAlt SKU: NH3GTR125KVAMPN: J1028706A
Price
List Price £55.96 ex VAT
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Why Choose the Mersen NH3GTR125KVA Transformer Fuse-Link?

The Mersen NH3GTR125KVA is a high-performance DIN NH gTr transformer protection fuse-link designed specifically to protect low voltage distribution transformers against overloads and short-circuit faults. Manufactured by Mersen, this NH3 fuse-link features a time-current characteristic optimised for transformer protection, allowing it to withstand transformer energisation currents whilst providing rapid fault clearance when required.

Part of the proven Mersen NH gTr 400 V AC fuse-link series, the NH3GTR125KVA is designed for 125 kVA transformers and has a 180 A rated current. It incorporates a centre blown-fuse indicator together with live gripping lugs, enabling quick fault identification and safe replacement using an approved NH fuse puller.

Its robust ceramic construction and NH3 format make it ideal for industrial switchboards, transformer feeders, substations and commercial power distribution systems where dependable transformer protection is essential.

Key Advantages

  • Purpose-designed gTr fuse-link for transformer protection.
  • Suitable for 125 kVA distribution transformers.
  • 180 A rated current.
  • 400 V AC operating voltage.
  • Time-current characteristic optimised for transformer energisation currents.
  • Centre indicator enables rapid identification of an operated fuse.
  • Live gripping lugs support safe replacement.
  • High breaking capacity for industrial fault protection.

Key Features

  • Mersen NH gTr 400 VAC transformer fuse-link series.
  • Catalogue number: NH3GTR125KVA.
  • Mersen item number: J1028706A.
  • Fuse size: NH3.
  • Transformer rating: 125 kVA.
  • Rated current: 180 A.
  • Rated voltage: 400 V AC.
  • Utilisation category: gTr.
  • Centre operated-fuse indicator.
  • Live gripping lugs.
  • Standard NH blade contacts.
  • Body width: 50 mm.

Reliable Protection for Distribution Transformers

The Mersen NH3GTR125KVA has been specifically developed for transformer protection. Unlike general-purpose gG fuse-links, its gTr operating characteristic is matched to transformer magnetising currents, allowing normal energisation without nuisance operation whilst maintaining excellent protection against overload and short-circuit faults.

The fuse-link forms part of the standard NH fuse system and should be installed in a compatible NH3 fuse base by suitably qualified personnel using an approved NH fuse puller and appropriate personal protective equipment.

Typical Applications

  • 125 kVA distribution transformers.
  • Industrial transformer switchboards.
  • Commercial electrical distribution systems.
  • Electrical substations.
  • Transformer feeder protection.
  • Industrial manufacturing facilities.

Technical Specifications

Voltage 400 V
Manufacturer Mersen
Series NH Fuse-Links gTr 400 VAC
Model NH3GTR125KVA
Item number J1028706A
Product type DIN NH transformer protection fuse-link
Fuse size NH3
Utilisation category gTr
Transformer nominal capacity 125 kVA
Rated current 180 A
Rated voltage 400 V AC
Current type AC
Contact type Blade contacts
Indicator Centre indicator
Gripping lugs Live tags
Body width 50 mm
EAN 3605340535297
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 180 A

Frequently Asked Questions

What is the Mersen NH3GTR125KVA used for?

The NH3GTR125KVA is designed to protect 125 kVA low voltage distribution transformers against overloads and short-circuit faults.

What transformer size is this fuse designed for?

This fuse-link is specifically designed for transformers with a nominal rating of 125 kVA.

What is the rated current?

The NH3GTR125KVA has a rated current of 180 A.

What does the gTr classification mean?

The gTr utilisation category identifies fuse-links specifically developed for transformer protection, providing characteristics that accommodate transformer energisation currents whilst protecting against overloads and short circuits.

Does this fuse include an indicator?

Yes. The NH3GTR125KVA incorporates a centre indicator that provides clear visual identification when the fuse-link has operated.

Trusted by Electrical Professionals Worldwide

Mersen NH gTr transformer fuse-links are trusted by transformer manufacturers, panel builders, utilities and industrial engineers for dependable protection of low voltage distribution transformers.

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