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1SCA022660R8960 ABB 50 A aM NH000 Motor Fuse 690 V
ABB OFAA000AM50 is a 50 A, 690 V AC, NH000 size 000 DIN-type aM HRC fuse link designed for coordinated short-circuit protection of industrial motor circuits.
£10.44
Why Choose the ABB OFAA000AM50 50 A aM Motor Fuse?
The ABB OFAA000AM50, ABB order code 1SCA022660R8960, is a DIN-type HRC fuse link specifically designed for motor-circuit protection. Rated at 50 A and 690 V AC, it combines the aM utilisation category with the compact NH000 / size 000 format for use in compatible industrial fuse bases and switch-fuse equipment.
As an aM motor fuse, the OFAA000AM50 provides partial-range protection intended primarily for short-circuit protection of motor circuits. Its time-current characteristics accommodate the temporary high starting currents associated with electric motors, while sustained overload protection is normally provided by a coordinated overload relay or electronic motor-protection device.
The OFAA000AM50 has a rated power loss of approximately 2.3 W and a net weight of approximately 0.12 kg. It forms part of ABB's FuseLine range of DIN-type HRC fuse links and provides a compact protection solution for industrial machinery, motor-control centres, starters and other applications operating at voltages up to 690 V AC.
Key Advantages
- 50 A rated current for appropriately coordinated motor circuits.
- 690 V AC rated voltage for demanding industrial power systems.
- aM utilisation category designed for motor-circuit short-circuit protection.
- Compact NH000 / DIN size 000 construction.
- Designed to tolerate normal motor starting currents.
- DIN-type HRC fuse-link construction for industrial protection systems.
- Rated power loss of approximately 2.3 W.
- Part of ABB's established FuseLine industrial fuse portfolio.
Key Features
- ABB OFAA000AM50 fuse link.
- 50 A rated current.
- 690 V AC rated voltage.
- aM motor-protection characteristic.
- NH000 / IEC size 000.
- DIN-type HRC fuse-link construction.
- Designed for coordinated motor protection.
- 2.3 W rated power loss.
- Approximate net weight of 0.12 kg.
- Delivery batch of 9 pieces.
Coordinated Short-Circuit Protection for Motors
Electric motors can draw substantially more than their normal running current during starting, so motor protection requires devices selected to tolerate this temporary inrush while still responding effectively to fault currents. The aM characteristic of the ABB OFAA000AM50 is specifically intended for this purpose, providing short-circuit protection without unnecessarily interrupting normal motor-starting conditions.
Because an aM fuse is a partial-range fuse, the OFAA000AM50 should be coordinated with a suitable overload-protection device for complete motor protection. When correctly selected as part of an ABB motor starter or switch-fuse combination, it provides dependable high-current fault protection for industrial motor circuits.
Typical Applications
- Industrial motor circuits.
- Direct-on-line motor starters.
- Motor control centres.
- Pumps, fans and compressors.
- Conveyors and material-handling systems.
- Industrial machinery and production equipment.
- 690 V AC systems requiring NH000 aM motor fuse protection.
Technical Specifications
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| Voltage | 690 V | |
|---|---|---|
| Fuse Type | NH (DIN) | |
| Fuse Size | NH000 | |
| Fuse Class | aM | |
| Current | 50 A | |
| Device Type | Fuse link | |
| Series | OFAA / FuseLine | |
| ABB order code | 1SCA022660R8960 | |
| Product type | DIN-type HRC motor fuse link | |
| Fuse utilisation category | aM | |
| Rated current | 50 A | |
| Rated voltage | 690 V AC | |
| NH size | 000 | |
| DIN fuse size | 000 | |
| Application | Motor-circuit short-circuit protection | |
| Power loss | 2.3 W | |
| Net weight | approx. 0.12 kg | |
| Delivery batch | 9 pieces |
Frequently Asked Questions
What is the ABB OFAA000AM50?
The ABB OFAA000AM50 is a 50 A, 690 V AC, NH000 DIN-type aM HRC fuse link designed primarily for short-circuit protection in motor circuits.
What does the aM rating of the OFAA000AM50 mean?
The aM utilisation category identifies a partial-range fuse intended for motor circuits, where the fuse provides short-circuit protection and a separate protective device is normally used for motor overload protection.
What size is the ABB OFAA000AM50 fuse?
The OFAA000AM50 is an NH000 / DIN size 000 fuse link.
What are the current and voltage ratings of ABB 1SCA022660R8960?
ABB order code 1SCA022660R8960 is rated at 50 A with a rated voltage of 690 V AC.
Does the OFAA000AM50 provide motor overload protection?
The OFAA000AM50 is an aM partial-range motor fuse intended primarily for short-circuit protection, so it is normally coordinated with an overload relay or another suitable motor overload-protection device.
Trusted ABB FuseLine Motor Protection
ABB FuseLine aM fuse links provide compact DIN-format short-circuit protection for motor circuits, supporting coordinated protection of industrial machinery, motor starters and power-control equipment.
