Why Choose the ABB OFAF1H40 40A gG DIN Fuse?
The ABB OFAF1H40 is a high rupturing capacity 40 A gG DIN fuse link designed for dependable full-range protection of low-voltage electrical circuits. Part of ABB's OFAF range, it combines a general-purpose fuse characteristic with a standardised DIN size 1 / NH1 format for industrial power distribution, machinery and control applications.
The OFAF1H40 uses the gG utilisation category, providing full-range protection against both overload and short-circuit currents. This makes it suitable for protecting cables, conductors and general electrical distribution circuits when installed in compatible DIN fusegear.
With a rated current of 40 A, a rated voltage of 500 V and a DIN size 1 / NH1 construction, the OFAF1H40 provides reliable circuit protection for industrial installations. It features dual indication for convenient identification of fuse operation, while ABB documentation lists a power loss of approximately 4.2 W for this model.
Key Advantages
- Dependable 40 A full-range circuit protection.
- 500 V rated voltage for low-voltage industrial applications.
- gG utilisation category provides overload and short-circuit protection.
- DIN size 1 / NH1 construction for compatible industrial fusegear.
- Dual indication assists with identification of fuse operation.
- Standardised DIN format for integration into electrical distribution and control equipment.
Key Features
- ABB OFAF HRC fuse link range.
- 40 A rated current.
- 500 V rated voltage.
- gG general-purpose fuse characteristic.
- DIN size 1 / NH1 fuse format.
- Dual indication for convenient fuse status identification.
- Full-range overload and short-circuit protection.
- Approximately 4.2 W power loss.
Reliable Full-Range Protection for Electrical Circuits
gG fuse links such as the ABB OFAF1H40 provide full-range protection against both overload and short-circuit conditions. When excessive current reaches the fuse operating threshold, the fuse element interrupts the circuit to help protect cables, conductors and connected electrical equipment against damaging fault currents.
The OFAF1H40 combines a 40 A current rating with a 500 V voltage rating and DIN size 1 construction. Its standardised format and dual indication make it suitable for switchboards, distribution equipment, industrial machinery and control systems where dependable and maintainable fuse protection is required.
Typical Applications
- Industrial low-voltage electrical distribution.
- Switchboards and distribution panels.
- Cable and conductor protection.
- Industrial machinery and automation equipment.
- Fuse switches and switch-disconnector assemblies.
- Electrical control panels and commercial installations.
