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1SCA022698R0520 ABB 630 A Size 3 500 V aM Motor DIN Fuse Link
ABB OFAF3AM630 is a 630 A, 500 V, NH3 size aM HRC DIN fuse link designed for short-circuit protection of high-current industrial motor circuits.
£58.42
Why Choose the ABB OFAF3AM630 DIN Fuse Link?
The ABB OFAF3AM630 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 630 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 normal motor starting currents while providing protection against damaging short-circuit currents. The OFAF3AM630 is therefore typically coordinated with a suitable overload relay or other overload protection device to provide comprehensive motor circuit protection.
With its standard DIN/NH construction, the OFAF3AM630 is suitable for compatible fuse bases, fuse switches and industrial switchgear. Its rated power loss is 42 W, while its robust HRC construction supports reliable operation in demanding motor control and power distribution applications.
Key Advantages
- Industrial aM HRC fuse link designed for motor circuit protection.
- 630 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 tolerate normal motor starting currents while providing short-circuit protection.
- Compatible with suitable DIN/NH fusegear and industrial switchgear.
Key Features
- ABB OFAF HRC fuse range.
- 630 A rated current.
- 500 V rated voltage.
- aM utilisation category for motor circuit protection.
- NH3 / IEC size 3 construction.
- 42 W power loss at rated current.
- DIN/NH high-rupturing-capacity fuse design.
- Suitable for demanding industrial motor and machinery circuits.
Reliable Short-Circuit Protection for High-Current Motors
The ABB OFAF3AM630 uses an aM operating characteristic specifically suited to motor circuits. Its time-current behaviour allows the temporary high currents associated with motor starting while providing rapid interruption when severe short-circuit conditions occur.
Because an aM fuse provides partial-range protection, the OFAF3AM630 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.
- 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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| Fuse Type | NH (DIN) | |
|---|---|---|
| Fuse Size | NH3 | |
| Fuse Class | aM | |
| Current | 630 A | |
| Voltage | 500 V | |
| Device Type | Fuse link | |
| Series | OFAF | |
| ABB order code | 1SCA022698R0520 | |
| Product type | HRC motor DIN fuse link | |
| Utilisation category | aM | |
| Rated current | 630 A | |
| Rated voltage | 500 V | |
| Fuse size | NH3 / IEC size 3 | |
| Power loss | 42 W | |
| Protection range | Partial-range motor circuit protection | |
| Weight | approx. 0.60 kg |
Frequently Asked Questions
What is the ABB OFAF3AM630 used for?
The ABB OFAF3AM630 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 OFAF3AM630?
The OFAF3AM630 has a rated current of 630 A.
What voltage is the ABB OFAF3AM630 rated for?
The OFAF3AM630 has a rated voltage of 500 V.
What fuse size is the OFAF3AM630?
The OFAF3AM630 is an NH3 / IEC size 3 DIN HRC fuse link.
Does the OFAF3AM630 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 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 operating characteristics designed for demanding motor control applications.
