Why Choose the ABB OFAF1H250 250A gG DIN Size 1 Fuse Link?
The ABB OFAF1H250 is a high rupturing capacity 250 A gG DIN fuse link designed for full-range overcurrent protection in industrial low-voltage electrical systems. Part of ABB's OFAF range, it uses the established DIN size 1 / NH1 format for integration with compatible fuse bases and fuse-switch equipment.
Rated at 500 V AC, the OFAF1H250 uses a gG utilisation category, providing protection against both overload and short-circuit currents. The fuse conforms to the DIN 43620 format and incorporates dual indication to assist maintenance personnel in identifying an operated fuse link.
With a 250 A rated current and 19.7 W power loss at rated current, the OFAF1H250 is suited to demanding distribution, switchboard and industrial equipment applications where dependable circuit protection is required.
Key Advantages
- 250 A rated current for higher-current industrial circuits.
- 500 V AC rated voltage for low-voltage power distribution.
- gG full-range protection against overload and short-circuit currents.
- DIN size 1 / NH1 construction for compatible industrial fusegear.
- Dual indication assists with identifying fuse operation.
- 120 kA AC breaking capacity for high prospective fault-current applications.
- Robust HRC construction for reliable industrial circuit protection.
Key Features
- ABB OFAF series DIN-type HRC fuse link.
- 250 A rated current.
- 500 V AC rated voltage.
- DIN size 1 / NH1.
- gG utilisation category.
- Dual indication.
- 19.7 W power loss at rated current.
- Designed in accordance with established DIN and IEC fuse-link requirements.
Reliable Full-Range Protection for Industrial Electrical Systems
The gG characteristic identifies the OFAF1H250 as a full-range fuse link suitable for general protection of cables and lines. It is designed to interrupt both overload currents and high short-circuit currents, helping protect conductors, switchgear and associated electrical equipment when correctly selected and coordinated.
The combination of a 250 A rating, 500 V AC capability, DIN size 1 / NH1 construction and high breaking capacity makes the ABB OFAF1H250 suitable for demanding industrial distribution systems where reliable and replaceable overcurrent protection is required.
Typical Applications
- Industrial low-voltage power distribution systems.
- Electrical switchboards and distribution panels.
- Cable and feeder overcurrent protection.
- Industrial machinery and production equipment.
- Power distribution within control panels.
- Compatible DIN size 1 / NH1 fuse bases and fuse-switch assemblies.
