High-speed aR characteristic fuse designed for semiconductor protection with dual visual indicators and plain blade terminals, rated 250A, 690VAC IEC, 700VAC UL.
£124.24
The Mersen NH2UD69V250PV is a premium Protistor® NH Size 2 high-speed semiconductor fuse designed to provide exceptional protection for sensitive power semiconductor devices. Manufactured by Mersen, this fuse safeguards IGBTs, thyristors, GTOs and power diodes against damaging short-circuit currents in demanding industrial power conversion systems.
As part of the trusted Mersen Protistor® NH aR series, the NH2UD69V250PV delivers ultra-fast fault interruption with low energy let-through to help minimise damage to expensive semiconductor equipment. Constructed using pure silver fuse elements embedded in solidified sand with silver-plated contacts, it offers outstanding electrical performance, high reliability and long service life.
With a 250 A current rating and a 690 V AC IEC / 700 V AC UL voltage rating, the NH2UD69V250PV is ideally suited to variable frequency drives, power converters, UPS systems, renewable energy installations and industrial automation equipment requiring dependable semiconductor protection.
High-speed semiconductor fuses are specifically engineered to interrupt short-circuit currents before excessive thermal energy can damage sensitive semiconductor devices. Their low I²t characteristics reduce electrical stress, helping extend equipment life and minimise costly downtime.
The Mersen Protistor® NH range is widely specified by OEMs and industrial engineers for protecting variable speed drives, converters, UPS systems, renewable energy equipment and industrial motor control systems where reliable semiconductor protection is essential.
| Item number | S320475 |
|---|---|
| Catalogue No | NH2UD69V250PV |
| Description | Square Body High-Speed Fuse Protistor® NH Size 2 aR 690VAC IEC 700VAC UL 250A With Double indicator Plain Blades |
| EAN/UPC Code | 3605340358513 |
| Rated voltage AC UL | 700 V |
| Rated voltage AC IEC | 690 V |
| Ampere Rating | 250 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | NH2 |
| Mounting | Clip |
| Clearing I2t At Rated Voltage | 18.7 kA²s |
| Melting I2t | 3.5 kA²s |
| AC Max I.R./Breaking Capacity | I1: 170 kA |
| Indication System | Yes |
| Indication System Type | Double indicator |
| Connection/Terminal Material | Brass |
| Connection/Terminal Type | Plain Blades |
| Product Width | 52 mm |
| Product Length | 150 mm |
| Product Height | 74 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 1.86 kg |
| Sell Pack Width | 155 mm |
| Sell Pack Length | 162 mm |
| Sell Pack Height | 80 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.62 kg |
| Power Dissipation at Rated Current Value | 93 W |
| HS Code | 85361090 |
| Country of Manufacture | Tunisia |
It provides ultra-fast short-circuit protection for semiconductor devices including IGBTs, thyristors, GTOs and power diodes used in industrial power electronic equipment.
The fuse has a 250 A rated current.
The NH2UD69V250PV is rated for 690 V AC (IEC) and 700 V AC (UL).
Yes. It features a double visual indicator for quick fuse status identification and simplified maintenance.
It is commonly installed in industrial drives, converters, UPS systems, renewable energy equipment and semiconductor-based power conversion systems.
Mersen Protistor® semiconductor fuses are trusted globally for delivering rapid fault protection, low energy let-through and dependable performance in demanding industrial power electronic applications.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...
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...