Why Choose the Mersen NH1AM69V40 NH Fuse-Link?
The Mersen NH1AM69V40 is a premium DIN NH aM fuse-link engineered to provide dependable short-circuit protection for motors, motor starters and industrial electrical equipment. As part of Mersen's trusted NH aM 690 V AC fuse-link range, it is specifically designed for demanding motor protection applications where high fault interruption capability and reliable performance are essential.
The aM operating characteristic allows the fuse-link to withstand the temporary inrush currents associated with motor starting whilst providing rapid interruption of short-circuit faults. For complete motor protection, it should be used alongside an appropriate overload relay or motor protection device.
Featuring a 40 A current rating, 690 V AC rated voltage and an NH1 body size, the NH1AM69V40 incorporates a ceramic body, silver-plated copper blade contacts, double indicator and live gripping lugs for dependable operation and efficient maintenance within industrial switchgear.
Key Advantages
- Designed specifically for industrial motor short-circuit protection.
- 40 A rated current for motor applications.
- 690 V AC rated operation.
- aM characteristic accommodates motor starting currents.
- Double indicator provides rapid fuse status identification.
- Live gripping lugs enable safe replacement using an NH fuse puller.
Key Features
- Mersen NH aM 690 V AC fuse-link series.
- Catalogue number: NH1AM69V40.
- Item number: G227890.
- NH1 fuse size.
- 40 A rated current.
- 690 V AC rated voltage.
- aM partial-range motor protection characteristic.
- 80 kA AC breaking capacity.
- Double fuse operation indicator.
- Live gripping lugs.
- Silver-plated copper blade contacts.
- RoHS compliant.
Reliable Short-Circuit Protection for Motor Circuits
The NH1AM69V40 is designed to interrupt high fault currents quickly whilst allowing normal motor starting currents to pass without nuisance operation. This makes it particularly suitable for protecting motors, motor starters and industrial machinery operating in demanding environments.
Because an aM fuse-link only provides short-circuit protection, it should always be coordinated with an appropriate overload relay or motor protection circuit breaker to provide complete motor circuit protection and maximise equipment reliability.
Typical Applications
- Motor control centres (MCCs).
- Industrial motor starters.
- Pumps, compressors and fans.
- Conveyor systems.
- Industrial machinery and OEM equipment.
- Manufacturing and automation systems.
