Why Choose the Mersen NH1AM69V63 NH Fuse-Link?
The Mersen NH1AM69V63 is a premium DIN NH size 1 aM fuse-link designed specifically for short-circuit protection of motor circuits and other equipment with high inrush currents. Rated at 63 A and 690 V AC, it is ideal for motor control centres, industrial machinery, pumps, compressors and manufacturing equipment operating in demanding low voltage electrical systems.
Its aM utilisation category allows the fuse-link to withstand the temporary starting currents generated by electric motors while providing rapid interruption of high fault currents. As a partial-range motor protection fuse, it should always be used alongside an appropriate overload protection device such as a thermal overload relay or electronic motor protection relay.
The NH1AM69V63 incorporates a durable ceramic body, double indication system, live gripping lugs and silver-plated copper blade contacts for dependable long-term performance. Designed for installation in compatible NH size 1 fuse bases and fuse-switch disconnectors, it offers reliable protection in industrial power distribution systems.
Key Advantages
- Designed specifically for motor circuit short-circuit protection.
- 63 A rated current for industrial motor applications.
- 690 V AC rated voltage.
- aM characteristic withstands normal motor starting currents.
- 80 kA AC breaking capacity.
- Double indicator for rapid fuse status identification.
- Live gripping lugs for safe handling with an approved NH fuse puller.
Key Features
- Mersen DIN NH aM fuse-link.
- Catalogue number: NH1AM69V63.
- Item number: J227892.
- NH size: NH1.
- Rated current: 63 A.
- Rated voltage: 690 V AC.
- Utilisation category: aM.
- Double indication system.
- Live gripping lugs.
- Silver-plated copper blade contacts.
Reliable Protection for Motor Circuits
Electric motors generate high inrush currents during starting that can exceed several times their normal running current. The Mersen NH1AM69V63 is specifically designed to tolerate these temporary currents while providing rapid interruption of genuine short-circuit faults, helping to minimise equipment damage and downtime.
As an aM partial-range fuse-link, the NH1AM69V63 must always be coordinated with a separate overload protection device. When correctly selected, it provides dependable protection for industrial motors, machinery and associated control equipment.
Typical Applications
- Motor control centres.
- Three-phase motor feeder circuits.
- Industrial pumps and compressors.
- Conveyors and material handling systems.
- Manufacturing and processing machinery.
- NH fuse bases and fuse-switch disconnectors.
