High-speed fuse offering reliable protection for power distribution and semiconductor applications with 630A rating and double indicator.
£194.89
The Mersen NH3GS69V630PV is a high-speed NH size 3 semiconductor fuse intended for the protection of high-power semiconductor devices in industrial drives, converters, rectifiers, inverters and other power-electronic equipment. Part of the established Mersen Protistor® range, it is designed to interrupt damaging fault currents rapidly while limiting the electrical and thermal energy transmitted to sensitive components.
Its gS utilisation category provides full-range semiconductor protection, covering both overload and short-circuit conditions when correctly selected and coordinated within the circuit. This makes the NH3GS69V630PV suitable for installations where comprehensive protection of IGBTs, thyristors, power diodes and related semiconductor assemblies is required.
The product reference identifies an NH size 3 fuse with a nominal current rating of 630 A and a voltage class of 690 V AC. Its robust square-body NH construction and blade contacts support installation in a suitably rated NH fuse base or fuse-switch disconnector. Exact breaking capacity, power-loss, indicator, dimensional and certification details should be checked against the current Mersen technical datasheet before specification.
Semiconductor devices can be damaged by excessive current in a fraction of a second. The Mersen NH3GS69V630PV is designed to respond rapidly to electrical faults, reducing peak current and limiting the total energy passed into the protected semiconductor assembly. This can help minimise damage to expensive power modules and reduce the risk of secondary equipment failure.
Unlike an aR partial-range semiconductor fuse, a correctly applied gS fuse is intended to provide protection across a broader current range. The fuse must nevertheless be selected according to the application voltage, continuous load current, starting or cyclic current, ambient conditions, prospective short-circuit current and the semiconductor manufacturer's coordination requirements.
| Item number | Q322589 |
|---|---|
| Catalogue No | NH3GS69V630PV |
| Description | Square Body High-Speed Fuse Protistor® NH Size 3 gS 690VAC IEC 700VAC UL 630A With Double indicator |
| EAN/UPC Code | 3605340360431 |
| Rated voltage AC UL | 700 V |
| Rated voltage AC IEC | 690 V |
| Ampere Rating | 630 A |
| RoHS Compliant | Yes |
| AC or DC | AC |
| Speed/Characteristic | gS |
| Fuse Size | NH3 |
| Mounting | Clip |
| Clearing I2t At Rated Voltage | 749 kA²s |
| Melting I2t | 149.95 kA²s |
| AC Max I.R./Breaking Capacity | I1: 160 kA |
| Indication System | Yes |
| Indication System Type | Double indicator |
| Connection/Terminal Material | Copper |
| Connection/Terminal Type | Plain Blades |
| Product Width | 72 mm |
| Product Length | 150 mm |
| Product Height | 89 mm |
| Sell Pack Quantity | 1 EA |
| Sell Pack Weight | 1.05 kg |
| Sell Pack Width | 80 mm |
| Sell Pack Length | 155 mm |
| Sell Pack Height | 75 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 1.05 kg |
| Power Dissipation at Rated Current Value | 63 W |
| HS Code | 85361090 |
| Country of Manufacture | Tunisia |
It is intended to protect high-power semiconductor devices used in industrial drives, converters, rectifiers, inverters and similar power-electronic equipment.
The product reference indicates a nominal current rating of 630 A.
The product reference identifies a 690 V AC voltage class. The precise IEC and UL ratings should be verified using the current Mersen datasheet.
The gS category identifies a full-range fuse designed for semiconductor protection, covering both overload and short-circuit conditions when correctly selected and coordinated.
No. A replacement must match the required voltage rating, utilisation category, physical size, contact arrangement, breaking capacity, power loss and time-current performance. Use the exact manufacturer reference wherever it is specified by the equipment manufacturer.
It should be installed only in an NH size 3 fuse base or fuse-switch disconnector that is compatible with the fuse dimensions and correctly rated for the circuit current, voltage and prospective fault level.
The manufacturer reference clearly indicates the NH size, gS class, voltage designation and nominal current. Exact breaking capacity, power loss, dimensions, indicator arrangement, weight and approvals should be confirmed from the current Mersen technical documentation before purchase or installation.
Mersen Protistor® fuse links are widely specified in industrial power-electronic systems where rapid fault interruption, effective current limitation and dependable semiconductor protection are essential.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...