Why Choose the ABB OFAA1AM63 63 A aM Motor DIN Fuse Link?
The ABB OFAA1AM63 is a high-performance HRC DIN fuse link designed specifically for short-circuit protection of industrial motor circuits. Identified by ABB order code 1SCA022701R2150, it forms part of the ABB 311002-Fuses And Fusebases product group and combines a 63 A current rating with the standard NH1 / DIN size 1 fuse format.
The OFAA1AM63 uses an aM utilisation category intended for motor protection applications. Its operating characteristic accommodates the temporary high currents associated with motor starting while providing effective protection against damaging short-circuit currents. As an aM fuse provides partial-range protection, it is normally coordinated with a suitable overload relay or other motor overload protection device.
Rated at 690 V AC, the OFAA1AM63 is suitable for demanding industrial motor-control systems. Its NH1 / DIN size 1 construction enables installation in compatible fuse bases and switch-fuse equipment, while dual indication provides convenient visual identification of fuse operation.
Key Advantages
- Purpose-designed aM motor fuse link for short-circuit protection.
- 63 A rated current for industrial motor circuits.
- 690 V AC rated voltage for demanding low-voltage installations.
- Standard NH1 / DIN size 1 construction.
- aM operating characteristic accommodates normal motor starting currents.
- Dual indication assists with identifying fuse operation.
- Suitable for coordination with contactors and motor overload protection devices.
Key Features
- ABB OFAA1AM63 HRC motor fuse link.
- 63 A rated current.
- 690 V AC rated voltage.
- aM utilisation category for motor circuit protection.
- NH1 / DIN size 1 fuse format.
- 3.6 W power loss at rated current.
- Dual indication for convenient fuse status identification.
- Designed for short-circuit protection of motor circuits.
- Suitable for use with appropriately coordinated overload protection.
Reliable Short-Circuit Protection for Industrial Motors
aM fuse links such as the ABB OFAA1AM63 are specifically designed for motor circuits, where starting currents can be considerably higher than normal running current. The aM characteristic accommodates these temporary starting currents while providing effective interruption of severe short-circuit currents that could otherwise damage cables, contactors and associated motor-control equipment.
Because the OFAA1AM63 is an aM partial-range fuse, it is normally coordinated with an appropriately selected overload relay or other overload protection device. This combination allows the fuse to provide short-circuit protection while the associated protective device responds to sustained motor overload conditions.
Typical Applications
- Industrial motor circuit short-circuit protection.
- Motor control centres and electrical control panels.
- Direct-on-line and other motor starter assemblies.
- Pumps, fans and compressor systems.
- Conveyors and material handling equipment.
- Manufacturing and processing machinery.
- Compatible NH1 / DIN size 1 fuse bases and switch-fuse equipment.
