Why Choose the ABB OFAA4AM1000 1000A HRC aM DIN Fuse Link?
The ABB OFAA4AM1000 is a high-capacity 1000 A HRC aM DIN fuse link designed for short-circuit protection of motor circuits and associated industrial electrical equipment. Part of the ABB OFAA aM fuse link range, it provides dependable high rupturing capacity protection for demanding low-voltage installations.
Designed for the DIN fuse system, the OFAA4AM1000 uses the DIN size 4 / NH4 format and features dual indication for practical fuse-status identification. Its aM utilisation category is specifically intended for motor-circuit protection, where the fuse provides short-circuit protection while coordinated overload protection is provided by a separate protective device.
With a rated current of 1000 A and a rated voltage of 690 V, the OFAA4AM1000 is suitable for high-current motor feeders, industrial switchgear and power distribution equipment requiring robust short-circuit protection.
Key Advantages
- High-capacity HRC DIN fuse link for motor-circuit protection.
- 1000 A rated current for demanding high-current applications.
- 690 V rated voltage suitable for industrial low-voltage systems.
- aM utilisation category optimised for motor short-circuit protection.
- DIN size 4 / NH4 construction for compatible industrial fusegear.
- Dual indication assists with identifying fuse operation.
- High rupturing capacity construction for dependable interruption of severe fault currents.
Key Features
- ABB OFAA aM HRC fuse link range.
- 1000 A rated current.
- 690 V rated voltage.
- DIN size 4 / NH4 fuse format.
- aM utilisation category.
- Dual indication.
- 80 W power loss.
- DIN-type HRC fuse-link construction.
- Designed for short-circuit protection in motor circuits.
Reliable Short-Circuit Protection for Motor Circuits
aM fuse links are specifically intended for motor circuits and provide high-performance protection against short-circuit currents. Their operating characteristic accommodates the high starting currents associated with industrial motors while allowing overload protection to be coordinated through a separate motor protection device.
The ABB OFAA4AM1000 combines a 1000 A current rating, 690 V voltage rating and robust DIN size 4 / NH4 construction for integration with compatible industrial fusegear. This makes it suitable for protecting high-power motor circuits in demanding industrial installations.
Typical Applications
- High-current industrial motor feeders.
- Motor control centres and switchboards.
- Industrial machinery and production equipment.
- Motor starter and contactor circuits.
- Switch-fuse and fuse-base assemblies.
- Industrial motor short-circuit protection.
