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1SCA022637R4280 ABB 1000 A gG DIN Size 4a 500 V Fuse Link
ABB OFAF4AH1000 is a 1000 A gG DIN size 4a / NH4a HRC fuse link rated at 500 V for dependable overload and short-circuit protection in high-current industrial low-voltage distribution systems.
£153.24
Why Choose the ABB OFAF4AH1000 1000 A gG DIN Fuse?
The ABB OFAF4AH1000 is a high-performance 1000 A gG HRC fuse link designed for dependable overload and short-circuit protection in high-current low-voltage electrical distribution systems. Part of the ABB OFAF range of DIN-type fuse links, this model combines a DIN size 4a / NH4a format with a general-purpose gG operating characteristic.
Designed for industrial power distribution, switchgear and fuse-switch applications, the OFAF4AH1000 has a rated voltage of 500 V. Its gG utilisation category provides full-range protection against overload and short-circuit currents, making it suitable for protecting cables, conductors and electrical distribution equipment in demanding installations.
With a rated current of 1000 A, the OFAF4AH1000 uses the heavy-duty DIN size 4a / NH4a format for installation in compatible high-current fuse bases and fuse-switch equipment. Its HRC construction provides reliable fault-current interruption for industrial distribution systems where high current capacity and dependable circuit protection are essential.
Key Advantages
- Heavy-duty 1000 A gG HRC fuse link for high-current industrial protection.
- DIN size 4a / NH4a construction for compatible high-current fuse equipment.
- 500 V rated voltage for low-voltage electrical distribution systems.
- gG utilisation category provides general-purpose full-range protection.
- High rupturing capacity construction for dependable interruption of severe fault currents.
- Suitable for switchboards, distribution systems and industrial power installations.
Key Features
- ABB OFAF DIN-type HRC fuse link.
- 1000 A rated current.
- 500 V rated voltage.
- DIN size 4a / NH4a fuse format.
- gG general-purpose utilisation category.
- Heavy-duty construction for high-current electrical distribution.
- 78 W power loss at rated current.
- Designed in accordance with IEC 60269.
Reliable High-Current Protection for Low-Voltage Distribution
HRC fuse links protect electrical circuits by interrupting excessive current before cables, conductors and connected equipment can be damaged. The ABB OFAF4AH1000 uses a gG characteristic to provide full-range protection against both overload and short-circuit conditions in high-current industrial low-voltage distribution circuits.
The DIN size 4a / NH4a format is intended for high-current fuse applications and enables the OFAF4AH1000 to be integrated with appropriately rated fuse bases, fuse switches and switch-disconnectors. Its robust HRC construction makes it suitable for major distribution circuits where reliable protection at currents up to 1000 A is required.
Typical Applications
- High-current industrial low-voltage power distribution.
- Main electrical switchboards and distribution panels.
- Fuse-switch disconnectors and high-current fuse bases.
- Cable and conductor protection.
- Industrial machinery and plant power distribution.
- Commercial and industrial electrical installations.
Technical Specifications
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| Voltage | 500 V | |
|---|---|---|
| Device Type | Fuse link | |
| Fuse Type | NH (DIN) | |
| Fuse Size | NH4a | |
| Fuse Class | gG | |
| Current | 1000 A | |
| Series | OFAF | |
| ABB order code | 1SCA022637R4280 | |
| Product type | HRC fuse link | |
| Rated current | 1000 A | |
| Rated voltage | 500 V | |
| Fuse size | DIN size 4a / NH4a | |
| Utilisation category | gG | |
| Power loss at rated current | 78 W | |
| Standard | IEC 60269 | |
| Unit weight | approx. 2 kg | |
| ABB product group | 311002-Fuses And Fusebases |
Frequently Asked Questions
What is the ABB OFAF4AH1000 used for?
The OFAF4AH1000 is a 1000 A gG HRC fuse link used to provide overload and short-circuit protection in high-current low-voltage electrical distribution systems.
What size is the ABB OFAF4AH1000?
The OFAF4AH1000 is a DIN size 4a / NH4a fuse link designed for compatible high-current fuse bases and switching equipment.
What is the rated current of the OFAF4AH1000?
The ABB OFAF4AH1000 has a rated current of 1000 A.
What voltage is the OFAF4AH1000 rated for?
The OFAF4AH1000 has a rated voltage of 500 V.
What does the gG classification of the OFAF4AH1000 mean?
The gG utilisation category identifies a general-purpose full-range fuse designed to provide protection against both overload and short-circuit currents.
Trusted Industrial Circuit Protection from ABB
ABB OFAF HRC fuse links provide dependable high-current circuit protection with standardised DIN formats and robust construction for industrial electrical distribution, switchgear and power applications.
