Why Choose the Mersen NH000AM69V50 NH Motor Protection Fuse?
The Mersen NH000AM69V50 is a high-performance DIN NH aM fuse-link designed specifically for the short-circuit protection of motors, motor starters and switching devices. With a 50 A rated current, 690 V AC operating voltage and aM utilisation category, it provides dependable protection for motor circuits while allowing normal motor starting currents without nuisance operation.
Manufactured by Mersen, this NH000 fuse-link features live gripping tags, a double visual indicator and a robust ceramic body for reliable operation in demanding industrial environments. The aM characteristic delivers high current-limiting performance against short circuits and is intended for use alongside suitable motor overload protection devices.
Designed to IEC NH standards, the NH000AM69V50 installs directly into compatible NH000 fuse bases and switch-fuse disconnectors, making it ideal for industrial motor control centres, switchboards and OEM electrical equipment.
Key Advantages
- Designed specifically for motor circuit short-circuit protection.
- 50 A rated current with 690 V AC operation.
- aM operating characteristic tolerates motor starting currents.
- 80 kA AC breaking capacity for dependable fault interruption.
- Double visual indicator for quick fuse status identification.
- Compatible with standard NH000 fuse systems.
Key Features
- Manufacturer: Mersen
- Model: NH000AM69V50
- Product type: DIN NH motor protection fuse-link
- Fuse size: NH000
- Rated current: 50 A
- Rated voltage: 690 V AC
- Operating category: aM
- Breaking capacity: 80 kA AC
- Double visual indicator.
- Live gripping tags.
- Body width: 21 mm
- Ceramic insulating body.
Reliable Protection for Industrial Motor Circuits
The Mersen NH000AM69V50 is engineered for motor circuit protection where high inrush currents occur during motor starting. Its aM operating characteristic prevents unnecessary fuse operation during normal starting while providing rapid interruption of high short-circuit currents that could otherwise damage motors, contactors and switching equipment.
Because the aM characteristic provides short-circuit protection only, this fuse should be used in conjunction with an appropriate thermal overload relay or motor protection device to achieve complete motor protection.
Typical Applications
- Motor control centres.
- Industrial motor starter circuits.
- Variable speed drive input protection.
- Industrial switchboards.
- OEM machinery and equipment.
- Low-voltage power distribution systems.
