Why Choose the ABB OFAF3H450 DIN Fuse Link?
The ABB OFAF3H450 is a high-rupturing-capacity gG DIN HRC fuse link designed for dependable protection of cables, conductors and industrial electrical circuits against overload and short-circuit currents. Part of the ABB OFAF fuse range, this fuse link combines a 450 A rated current, 500 V rated voltage and NH3 / IEC size 3 construction.
The gG utilisation category provides full-range protection, enabling the OFAF3H450 to protect electrical circuits against both sustained overloads and high short-circuit currents. Its high-rupturing-capacity construction makes it suitable for demanding industrial power distribution, switchgear and machinery applications where reliable fault interruption is essential.
With its standard DIN/NH blade-contact construction, the OFAF3H450 can be integrated into compatible fuse bases, fuse switches and switch-disconnectors. The fuse has a power loss of approximately 38 W at rated current and compact dimensions of approximately 150 × 70 × 84 mm.
Key Advantages
- High-performance gG HRC fuse link for full-range circuit protection.
- 450 A rated current for high-current industrial applications.
- 500 V rated voltage.
- Standard NH3 / IEC size 3 DIN fuse construction.
- Provides protection against both overload and short-circuit currents.
- High-rupturing-capacity construction for dependable fault interruption.
Key Features
- ABB OFAF HRC fuse range.
- 450 A rated current.
- 500 V rated voltage.
- gG utilisation category.
- NH3 / IEC size 3 fuse format.
- 38 W power loss at rated current.
- Dual indication for convenient fuse status identification.
- DIN/NH blade-contact construction.
- Designed for industrial low-voltage circuit protection.
Reliable Full-Range Industrial Circuit Protection
The ABB OFAF3H450 uses a gG operating characteristic designed to provide full-range protection against overload and short-circuit currents. When excessive current flows through the protected circuit, the fuse element operates to interrupt the fault and help protect cables, conductors, switchgear and connected electrical equipment.
Its 450 A rating and standard NH3 construction make the OFAF3H450 suitable for high-current low-voltage distribution systems. Its DIN format allows straightforward integration with compatible industrial fusegear in electrical distribution and machinery installations.
Typical Applications
- Industrial low-voltage power distribution.
- Electrical switchboards and distribution panels.
- Industrial machinery and production equipment.
- Fuse switches and switch-disconnectors.
- Cable and conductor protection.
- Commercial and industrial electrical installations.
