MERSEN FUSE NH3 630KVA 400V GTR MI NH32GTR630KVA

Q: What is the Mersen NH32GTR630KVA used for?

It is designed to protect 630 kVA low-voltage transformers against overloads and short-circuit faults.

Q: What is the rated current?

The NH32GTR630KVA has a rated current of 909 A.

Mersen NH32GTR630KVA DIN NH3 transformer fuse-link with 909 A rating, 400 V AC operation, gTr characteristic, centre indicator and live gripping lugs for 630 kVA transformer protection.

SKU: NH32GTR630KVAAlt SKU: NH32GTR630KVAMPN: A1030515A

List Price £106.25 ex VAT

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£106.25

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Why Choose the Mersen NH32GTR630KVA Transformer Protection Fuse?

The Mersen NH32GTR630KVA is a high-performance DIN NH gTr transformer fuse-link engineered to protect low-voltage transformers against overloads and short-circuit faults. Designed specifically for 630 kVA transformers, this NH3 fuse features a 909 A rated current, 400 V AC operating voltage and a centre-mounted visual indicator, making it ideal for industrial power distribution and transformer feeder applications.

Manufactured by Mersen, a global leader in electrical protection solutions, the NH32GTR630KVA forms part of the specialised NH gTr transformer fuse range. Its time-current characteristic is specifically matched to transformer behaviour, allowing normal magnetising inrush currents while providing dependable protection during overload and fault conditions.

Featuring live gripping lugs, a robust NH blade-contact construction and a centre indicator, this fuse-link offers reliable installation and rapid identification following operation. It is suitable for switchboards, substations and industrial transformer installations requiring dependable low-voltage protection.

Key Advantages

Designed specifically for 630 kVA transformer protection.
909 A rated current for large transformer installations.
400 V AC rated voltage.
gTr operating characteristic optimised for transformer protection.
Centre-mounted visual indicator for quick fuse status identification.
Live gripping lugs for safe professional handling.

Key Features

Manufacturer: Mersen
Model: NH32GTR630KVA
Product type: DIN NH transformer fuse-link
Fuse size: NH3
Rated current: 909 A
Rated voltage: 400 V AC
Transformer capacity: 630 kVA
Operating category: gTr
Centre-mounted visual indicator.
Live gripping lugs.
NH blade-contact construction.
Suitable for industrial transformer protection.

Reliable Protection for Large Power Transformers

The Mersen NH32GTR630KVA has been developed specifically for protecting large low-voltage transformers. Its gTr operating characteristic withstands normal transformer energisation currents while providing rapid interruption of overloads and short circuits, helping maximise transformer reliability and minimise unnecessary fuse operation.

Its DIN NH blade-contact construction provides secure installation in compatible NH fuse bases, while the centre indicator enables maintenance personnel to quickly identify an operated fuse. Installation and replacement should always be carried out by suitably qualified personnel using an approved NH fuse puller.

Typical Applications

630 kVA low-voltage transformer protection.
Industrial power distribution systems.
Transformer feeder circuits.
Electrical substations.
Main LV switchboards.
Industrial process plants.

Technical Specifications

Voltage	400 V
Manufacturer	Mersen
Series	NH Fuse-links gTr 400 VAC
Model	NH32GTR630KVA
Product type	DIN NH transformer fuse-link
Fuse size	NH3
Rated current	909 A
Rated operating voltage	400 V AC
Transformer rating	630 kVA
Operating category	gTr
Indicator	Centre-mounted indicator
Gripping lugs	Live gripping lugs
Body width	71 mm
Current type	AC
RoHS compliant	Yes
HS Code	85361090
Country of Manufacture	Hungary
Device Type	Fuse link
Fuse Type	NH (DIN)
Fuse Size	NH3
Current	909 A

Frequently Asked Questions

What is the Mersen NH32GTR630KVA used for?

It is designed to protect 630 kVA low-voltage transformers against overloads and short-circuit faults.

What is the rated current?

The NH32GTR630KVA has a rated current of 909 A.

What voltage is this fuse designed for?

This transformer fuse-link is rated for operation on systems up to 400 V AC.

What does the gTr operating category mean?

The gTr characteristic is specifically developed for transformer protection, allowing normal transformer inrush currents while providing effective overload and short-circuit protection.

What does the centre indicator provide?

The centre-mounted visual indicator allows maintenance personnel to quickly identify when the fuse has operated and requires replacement.

Trusted for Transformer Protection

Mersen NH transformer fuse-links are trusted worldwide by electrical engineers, OEMs and power distribution specialists for reliable transformer protection, high current limiting performance and dependable operation in demanding industrial installations.

UK delivery

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