Mersen NH1GG50V200-1 NH1 gG 200A 500V Isolated Lug Fuse P217225

NH1GG50V200-1 (item number P217225) is a Mersen NH fuse-link of size 1, type gG, rated 200 A at 500 V ac / 250 V dc with 120 kA ac breaking capacity, double indicator and isolated metal gripping lugs (SGL). The “-1” suffix marks the isolated-lug version; the live-lug counterpart is NH1GG50V200 (P218766).

NH1 gG fuse with isolated gripping lugs

The datasheet lists “isolated metal gripping lugs (SGL)” as the feature that separates this family from the live-lug fuse-links. The insulated lugs give a safer hold when the fuse-link is handled, and the black end-plates in the photograph show the difference. Other data match the gG family: 500 V ac, 250 V dc, 120 kA ac, ceramic body and silver-plated copper contacts.

The 200 A item has a width of 39.5 mm, power dissipation of 18 W at rated current, weighs 0.42 kg and is packed three to a box. The isolated-lug data sheet covers 2 A to 630 A in sizes 000 to 3.

Key features as printed in the datasheet

• Size 1, gG, 200 A, 500 V ac / 250 V dc.
• Isolated metal gripping lugs (SGL); double indicator; 0 % cadmium.
• Rated breaking capacity 120 kA ac, 80 kA dc (overview).
• Power dissipation at In 18 W; weight 0.42 kg; width 39.5 mm.
• Ceramic body; silver-plated copper contacts.
• Standards printed: VDE 0636 Part 201, IEC 60269-1 and -2; dimensions according to DIN 43 620 parts 1 to 4.

Technical specification

Product data

Construction

Selection and ordering guide

Choose the isolated-lug version when site rules or equipment design call for insulated handling points, or when the base is designed for isolated-lug fuse-links. The electrical rating equals the live-lug version, so the choice is about handling and compatibility.

Ratings in size 1 span 16 A to 355 A; 200 A is a mid-range value, and size 2 begins at 25 A.

Reading the catalog code: NH1 (size 1) GG (gG) 50V (500 V) 200 (200 A) -1 (isolated lugs). In the datasheet the isolated-lug table prints the same 18 W dissipation and 0.42 kg weight as the live-lug 200 A fuse-link, so thermal design and weight do not change when you switch between the two lug types; only the item number and handling features change.

Installation and operation notes

Fit with a fuse puller into a size 1 base or switch. Because the lugs are insulated, the hold is safer, but the blades are still live when the circuit is energised.

Observe dissipation of 18 W per fuse when calculating enclosure temperature.

Derived check: three fuse-links of 18 W each dissipate about 54 W in a three-phase feeder (3 x 18 W). The datasheet gives the same dissipation as the live-lug 200 A fuse-link, which means the isolated-lug option does not change the thermal load of the board; confirm the fuse-link fits your base, since the isolated lugs are an insulated cover over the metal grip areas.

Applications in Oman and the GCC

Feeders for motors, heaters and distribution boards in industrial plants, commercial buildings, utilities and infrastructure, particularly where fuse-links are changed frequently by maintenance teams.

Time-current curves for size 1 are in the datasheet for coordination.

Ordering tip: the package quantity is 3 fuse-links, which matches a three-phase set, and the item number P217225 identifies the isolated-lug version in Mersen systems. When replacing a blown fuse, buy a full set of three so that all phases carry fuse-links from the same production period and same characteristics.

Selection and handling notes

Isolated lugs reduce the risk of touching live metal while the fuse-link is being handled, but they do not replace safe working practice: isolate the circuit where possible and use a fuse puller. Make sure the NH1 base or fuse switch accepts the isolated-lug version, since the lug shape differs from the live-lug series. Record the item number so the same type is used when replacing a blown fuse.

Information needed for a quotation

Send the full item code, the quantity, the delivery location in Oman or the GCC and any matching fuse bases, holders or handles, so that the complete protection package can be quoted together.

Documents and supply information

The manufacturer data sheet is attached to this page and should be read together with the project specification before a purchase is confirmed. Ratings, dimensions and protection classes are quoted as printed on that sheet. Lead time, stock position and certificates available with the shipment are confirmed in the quotation, and we supply to Oman and the wider GCC region for industrial, utility and building services projects.

Compatible accessories and related items

Related Mersen items on this site: live-lug gG fuses NH000GG50V100, NH2GG50V400 and NH3GG50V630; aM NH2AM69V200; NH base BB01EP.

Frequently asked questions

What does -1 mean in NH1GG50V200-1?

It marks the version with isolated gripping lugs; the live-lug fuse is NH1GG50V200.

What are the ratings?

Size 1, gG, 200 A, 500 V ac / 250 V dc, 120 kA ac.

What is the item number?

P217225.

What is the width and weight?

39.5 mm and 0.42 kg.

Is Seven Star LLC a Mersen distributor?

No, we are an independent supplier in Muscat and supply Mersen items on request rather than acting as a Mersen channel partner.

Documents and quotation

For quotation, send your required quantity and destination. The Mersen datasheet for NH1GG50V200-1 is provided below the description on this page. Seven Star LLC works as an independent supplier from Muscat. Please compare code, ratings and approvals with the document before you place an order; see also the category listing.