High-speed NH size 000 fuse with aR characteristic, rated 40A at 690VAC IEC and 700VAC UL, featuring double indicator system and plain brass blades for semiconductor protection.
£38.15
The Mersen NH000UD69V40PV is a compact NH000 high-speed semiconductor fuse designed to protect sensitive power electronic components against damaging short-circuit currents. Its ultra-rapid operating characteristics help limit peak fault current and reduce the thermal energy passed to connected semiconductor devices.
Engineered for industrial power conversion equipment, the NH000UD69V40PV provides dependable protection for components such as diodes, thyristors, rectifiers, inverters and variable-speed drive assemblies. Its NH blade-contact construction enables secure installation in compatible fuse bases and supports straightforward replacement during planned maintenance.
With a rated current of 40 A and a rated voltage of 690 V AC, this Mersen fuse is suitable for low-voltage industrial systems requiring rapid fault interruption. The compact NH000 body size makes it particularly useful where panel space is limited and reliable semiconductor protection is essential.
Semiconductor devices can be permanently damaged within milliseconds when exposed to excessive fault current. The Mersen NH000UD69V40PV is designed to interrupt serious short circuits rapidly, limiting the peak current and I²t energy reaching connected power electronic components.
Correct fuse selection should account for the circuit voltage, continuous operating current, prospective short-circuit current, duty cycle and energy-withstand capability of the protected semiconductor. A general-purpose industrial fuse should not be used as a direct substitute unless its suitability has been confirmed by the equipment manufacturer.
| Item number | C320047 |
|---|---|
| Catalogue No | NH000UD69V40PV |
| Description | Square Body High-Speed Fuse Protistor® NH Size 000 aR 690VAC IEC 700VAC UL 40A With Double indicator Plain Blades |
| EAN/UPC Code | 8430399015286 |
| Rated voltage AC UL | 700 V |
| Rated voltage AC IEC | 690 V |
| Ampere Rating | 40 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | NH000 |
| Mounting | Clip |
| Clearing I2t At Rated Voltage | 400 A²s |
| Melting I2t | 67 A²s |
| AC Max I.R./Breaking Capacity | I1: 80 kA |
| Indication System | Yes |
| Indication System Type | Double indicator |
| Connection/Terminal Material | Brass |
| Connection/Terminal Type | Plain Blades |
| Product Width | 21 mm |
| Product Length | 78.5 mm |
| Product Height | 52.5 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 0.39 kg |
| Sell Pack Width | 64 mm |
| Sell Pack Length | 80 mm |
| Sell Pack Height | 54 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.13 kg |
| Power Dissipation at Rated Current Value | 5.5 W |
| HS Code | 85361050 |
| Country of Manufacture | Tunisia |
The NH000UD69V40PV is a high-speed fuse designed to protect compatible semiconductor devices and industrial power electronic equipment against damaging short-circuit currents.
The Mersen NH000UD69V40PV has a rated current of 40 A.
The fuse is rated for operation at up to 690 V AC in compatible electrical systems.
This fuse uses the compact NH000 blade-contact format and should be installed in a compatible NH000 fuse base.
A general-purpose fuse should not be used as a direct replacement unless compatibility has been confirmed. High-speed semiconductor fuses have specialised current-limiting and energy-reduction characteristics intended to protect sensitive power electronic components.
Mersen high-speed semiconductor fuses are widely used by OEMs, panel builders and maintenance engineers to provide dependable protection for critical power electronic systems in demanding industrial applications.
● Service Agreements
Credit Accounts
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
● frequently asked questions
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
● latest blog
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...