High-speed NH Size 1 Protistor® fuse with double indicator and plain blades, rated 63A for AC applications up to 690VAC IEC and 700VAC UL. Provides rapid protection for power semiconductors with a breaking capacity of 170 kA.
£92.91
The Mersen NH1UD69V63PV is a premium NH Size 1 square body high-speed semiconductor protection fuse from the trusted Mersen Protistor® series. Designed specifically to protect sensitive power electronic equipment, this ultra-fast aR fuse safeguards IGBTs, thyristors, GTOs, diodes and other semiconductor devices against damaging short-circuit currents while delivering exceptional current-limiting performance.
Manufactured using pure silver fuse elements embedded in high-grade silica sand, the NH1UD69V63PV offers low let-through energy (I²t), silver-plated contacts and a high breaking capacity for dependable protection in demanding industrial environments. Its NH Size 1 construction enables installation in standard NH modular fuse holders and switch disconnectors for worldwide compatibility.
With a 63 A rated current and 690 V AC IEC / 700 V AC UL operating voltage, this fuse is ideal for protecting industrial drives, converters, UPS systems, renewable energy equipment and other power conversion applications requiring rapid semiconductor protection.
The Mersen NH1UD69V63PV is engineered to interrupt fault currents rapidly before they can damage expensive semiconductor devices. Its low energy let-through characteristics help improve equipment reliability, reduce maintenance costs and minimise production downtime.
Designed for modern power conversion equipment, the Protistor® NH series provides reliable protection in industrial automation, renewable energy installations, motor drives and other demanding electrical applications.
| Item number | M320355 |
|---|---|
| Catalogue No | NH1UD69V63PV |
| Description | Square Body High-Speed Fuse Protistor® NH Size 1 aR 690VAC IEC 700VAC UL 63A With Double indicator Plain Blades |
| EAN/UPC Code | 3605340358445 |
| Rated voltage AC UL | 700 V |
| Rated voltage AC IEC | 690 V |
| Ampere Rating | 63 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | NH1 |
| Mounting | Clip |
| Clearing I2t At Rated Voltage | 700 A²s |
| Melting I2t | 128 A²s |
| 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 | 40 mm |
| Product Length | 135 mm |
| Product Height | 64 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 1.26 kg |
| Sell Pack Width | 125 mm |
| Sell Pack Length | 140 mm |
| Sell Pack Height | 70 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.42 kg |
| Power Dissipation at Rated Current Value | 36.1 W |
| HS Code | 85361050 |
| Country of Manufacture | Tunisia |
It provides ultra-fast protection for semiconductor devices including IGBTs, thyristors, GTOs and diodes used in industrial power electronic equipment.
The Mersen NH1UD69V63PV has a 63 A rated current.
The fuse is rated for 690 V AC (IEC) and 700 V AC (UL).
The aR classification identifies an ultra-fast fuse designed specifically for semiconductor short-circuit protection.
It is commonly installed in industrial drives, converters, UPS systems, inverter equipment and power conversion applications requiring dependable semiconductor protection.
Mersen Protistor® semiconductor fuses are trusted worldwide by OEMs, panel builders and industrial engineers for delivering rapid fault interruption and dependable protection for critical power electronic equipment.
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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...