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OFAF3AM800 ABB 800 A Size 3 500 V aM HRC DIN Fuse Link
ABB OFAF3AM800 is an 800 A, 500 V, NH3 size aM HRC DIN fuse link designed for short-circuit protection of high-current industrial motor circuits.
£96.78
Why Choose the ABB OFAF3AM800 DIN Fuse Link?
The ABB OFAF3AM800 is a high-rupturing-capacity aM motor DIN fuse link designed for dependable short-circuit protection of high-current motor circuits and industrial electrical equipment. Part of the ABB OFAF HRC fuse range, it combines a 800 A rated current, 500 V rated voltage and NH3 / IEC size 3 construction.
The aM utilisation category is specifically intended for partial-range motor circuit protection, allowing the high starting currents associated with electric motors while providing protection against damaging short-circuit currents. The OFAF3AM800 is therefore typically coordinated with a suitable overload relay or motor protection device to provide comprehensive protection for the motor circuit.
With its standard DIN/NH blade-contact construction, the OFAF3AM800 is suitable for compatible fuse bases, fuse switches and industrial switchgear. Its robust HRC construction provides high current-limiting capability and rapid fault clearing, making it suitable for demanding motor control and industrial power applications.
Key Advantages
- Industrial aM HRC fuse link designed for motor circuit protection.
- 800 A rated current for high-current motor applications.
- 500 V rated voltage for industrial electrical systems.
- Standard NH3 / IEC size 3 DIN fuse construction.
- Designed to accommodate motor starting currents while providing short-circuit protection.
- High current-limiting capability helps minimise the effects of electrical faults.
Key Features
- ABB OFAF HRC fuse range.
- 800 A rated current.
- 500 V rated voltage.
- aM utilisation category for motor circuit protection.
- NH3 / IEC size 3 construction.
- DIN/NH blade-contact design.
- High-rupturing-capacity construction for dependable fault interruption.
- Suitable for demanding industrial motor and machinery circuits.
Reliable Short-Circuit Protection for High-Current Motors
The ABB OFAF3AM800 uses an aM operating characteristic specifically suited to motor circuits. Its time-current behaviour accommodates the temporary high currents encountered during motor starting while enabling effective interruption of severe short-circuit currents that could otherwise damage motors, cables and switching equipment.
Because an aM fuse provides partial-range protection, the OFAF3AM800 is normally coordinated with an appropriate overload protection device. This arrangement provides effective protection for motors, contactors, conductors and associated equipment in demanding industrial motor control systems.
Typical Applications
- High-current industrial motor circuits.
- Motor control centres and switchboards.
- Large pumps, fans and compressor systems.
- Conveyors and material handling equipment.
- Industrial machinery and production equipment.
- Fuse switches and compatible DIN/NH fusegear.
Technical Specifications
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| Voltage | 500 V | |
|---|---|---|
| Fuse Type | NH (DIN) | |
| Fuse Size | NH3 | |
| Fuse Class | aM | |
| Current | 800 A | |
| Device Type | Fuse link | |
| Series | OFAF | |
| ABB order code | 1SCA022701R4790 | |
| Product type | HRC motor DIN fuse link | |
| Utilisation category | aM | |
| Rated current | 800 A | |
| Rated voltage | 500 V | |
| Fuse size | NH3 / IEC size 3 | |
| Protection range | Partial-range motor circuit protection | |
| Applicable standard | IEC 60269 | |
| Overall length | approx. 150 mm | |
| Body dimensions | approx. 86 × 70 mm | |
| Weight | approx. 0.63 kg |
Frequently Asked Questions
What is the ABB OFAF3AM800 used for?
The ABB OFAF3AM800 is an aM HRC motor fuse link designed primarily to provide short-circuit protection for high-current industrial motor circuits.
What is the current rating of the OFAF3AM800?
The OFAF3AM800 has a rated current of 800 A.
What voltage is the ABB OFAF3AM800 rated for?
The OFAF3AM800 has a rated voltage of 500 V.
What fuse size is the OFAF3AM800?
The OFAF3AM800 is an NH3 / IEC size 3 DIN HRC fuse link.
Does the OFAF3AM800 provide motor overload protection?
The aM characteristic provides partial-range protection primarily against short-circuit currents, so the fuse is normally coordinated with a suitable overload relay or other motor overload protection device.
Trusted Industrial Motor Protection from ABB
ABB OFAF aM HRC fuse links provide dependable short-circuit protection for industrial motor circuits, combining standardised DIN/NH construction with high current-limiting performance for demanding motor control applications.
