Why Choose the Mersen NH1UD69V400PV High-Speed Semiconductor Fuse?
The Mersen NH1UD69V400PV is a premium Protistor® NH Size 1 high-speed semiconductor fuse engineered to provide rapid and dependable protection for modern power semiconductor devices. Manufactured by Mersen, this fuse is specifically designed to protect IGBTs, thyristors, GTOs and power diodes used in industrial power conversion systems.
As part of the trusted Mersen Protistor® NH aR series, the NH1UD69V400PV combines ultra-fast fault interruption with low energy let-through to help minimise damage during short-circuit events. Manufactured using pure silver fuse elements embedded in solidified sand with silver-plated contact surfaces, it delivers exceptional reliability and long service life in demanding industrial environments.
With a rated current of 400 A and a 690 V AC IEC / 700 V AC UL voltage rating, the NH1UD69V400PV is ideal for protecting variable frequency drives, UPS systems, inverters, converters and renewable energy equipment requiring dependable semiconductor protection.
Key Advantages
- Ultra-fast aR semiconductor fuse for protecting sensitive power electronics.
- 400 A current rating for high-power industrial applications.
- 690 V AC IEC / 700 V AC UL voltage rating.
- 170 kA breaking capacity for outstanding fault interruption.
- Double visual indicator for easier maintenance.
- Low I²t characteristics help protect valuable semiconductor devices.
Key Features
- Mersen Protistor® NH Size 1 series.
- 400 A rated current.
- 690 V AC IEC / 700 V AC UL.
- aR ultra-fast operating characteristic.
- NH Size 1 square body construction.
- Plain blade terminals.
- Double visual indicator.
- Pure silver fuse elements with silver-plated contacts.
Reliable Protection for Industrial Power Electronics
High-speed semiconductor fuses are specifically engineered to interrupt short-circuit currents before excessive thermal energy can damage sensitive semiconductor components. Their low I²t characteristics help extend equipment life, improve reliability and reduce unplanned downtime.
The Mersen Protistor® NH range is widely specified by OEMs and industrial engineers for protecting motor drives, converters, UPS systems, renewable energy equipment and other industrial power conversion applications.
Typical Applications
- Variable frequency drives.
- Industrial motor control systems.
- Power converters and inverters.
- UPS systems.
- Renewable energy power conversion equipment.
- Industrial automation and electrical distribution panels.
