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1SCA022776R1000 ABB 1000A 690V HRC aM DIN Size 4 Fuse Link
ABB OFAA4AM1000 is a 1000 A, 690 V HRC aM DIN size 4 fuse link with dual indication designed for short-circuit protection of high-current industrial motor circuits.
£465.24
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.
Technical Specifications
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| Voltage | 690 V | |
|---|---|---|
| Device Type | Fuse link | |
| Fuse Type | NH (DIN) | |
| Fuse Size | NH4 | |
| Fuse Class | aM | |
| Current | 1000 A | |
| Fuse Indication | Dual indicator | |
| Series | OFAA aM | |
| ABB order code | 1SCA022776R1000 | |
| Product type | HRC DIN fuse link | |
| Rated current | 1000 A | |
| Rated voltage | 690 V | |
| Utilisation category | aM | |
| Fuse size | DIN size 4 / NH4 | |
| Fuse system | DIN | |
| Indication | Dual indication | |
| Power loss | 80 W | |
| Standard | IEC 60269 | |
| Weight | approx. 2 kg | |
| ABB product group | 311002-Fuses And Fusebases |
Frequently Asked Questions
What is the ABB OFAA4AM1000 used for?
The OFAA4AM1000 is an aM HRC DIN fuse link designed primarily to provide short-circuit protection for high-current industrial motor circuits.
What is the current rating of the OFAA4AM1000?
The ABB OFAA4AM1000 has a rated current of 1000 A.
What voltage is the OFAA4AM1000 rated for?
The OFAA4AM1000 has a rated voltage of 690 V.
What fuse size is the ABB OFAA4AM1000?
The OFAA4AM1000 is a DIN size 4 / NH4 fuse link for use with compatible industrial fusegear.
What does the aM fuse classification mean?
The aM classification identifies a partial-range fuse intended primarily for motor-circuit short-circuit protection, with separate protection normally used for motor overload conditions.
Trusted Industrial Motor Protection
ABB OFAA aM HRC fuse links provide dependable short-circuit protection for industrial motor circuits, combining high fault-current interruption capability with standard DIN fusegear compatibility.
