Description
The Eaton Bussmann 450NHG3B is a 450A NH Size 3 Low-Voltage DIN-Type Dual Fuse Link classified gL-gG under IEC 60269 and DIN EN 60269. Designed for full-range overcurrent protection, the 450NHG3B combines a robust dual fuse element construction with NH3 blade contact geometry, making it one of the most dependable high-current fuse links available for low-voltage power distribution systems rated up to 450A.
The 450NHG3B is widely used across a broad range of low-voltage electrical installations, including LV switchgear assemblies, main and sub-distribution boards, motor control centres (MCCs), motor feeder circuits, transformer secondary protection, and heavy-duty cable feeder protection in both industrial plants and large commercial facilities. Its 450A rating makes it well suited for protecting high-current feeders and busbars where reliable fault clearance is critical.
As a DIN-type NH fuse link, the 450NHG3B meets the stringent dimensional and performance requirements of DIN EN 60269 and IEC 60269. The dual fuse element design ensures a high breaking capacity capable of clearing severe short-circuit currents while limiting let-through energy to protect downstream equipment. The gL-gG classification confirms full-range protection covering both overload and short-circuit conditions, suitable for cables, conductors, and general electrical loads.
Eaton Bussmann is a globally recognised leader in circuit protection, trusted by OEMs, panel builders, electrical contractors, and plant engineers across more than 100 countries. Their NH fuse link range is manufactured to consistent quality standards, ensuring predictable performance, interchangeability within the NH system, and long service life even in thermally demanding environments. Specifying Eaton Bussmann fuses means choosing proven technology backed by world-class engineering and technical support.
Shansen Enterprises, based in Coimbatore, is an authorized Eaton Bussmann distributor serving customers across Tamil Nadu and South India. Contact us via WhatsApp or email to enquire about the 450NHG3B, check real-time stock availability, request a competitive price quote, or discuss bulk order requirements. Our team is ready to support your procurement needs with fast response and reliable supply.
What does NH size 3 mean in fuse 450NHG3B?
NH size 3 refers to the standardized physical dimension category of the DIN-type NH fuse link. The size 3 designation defines the blade contact dimensions, mounting envelope, and the current rating range the fuse can safely accommodate, ensuring mechanical and electrical interchangeability with all NH3-compatible fuse holders and switch-disconnectors.
What does class gL-gG mean?
Class gL-gG is a general-purpose fuse classification defined by IEC 60269 and DIN EN 60269. The “g” prefix indicates full-range breaking capacity, meaning the fuse can interrupt all fault currents from the minimum fusing current up to the maximum rated breaking capacity. The “L” and “G” suffixes denote protection of cables and lines as well as general electrical loads, making the 450NHG3B suitable for overload and short-circuit protection across a wide variety of applications.
What are the typical applications for the 450NHG3B?
The 450NHG3B 450A NH3 dual fuse link is typically used in low-voltage switchgear panels, main and sub-distribution boards, motor control centres, motor feeder circuits, transformer secondary protection, and heavy cable feeder protection in industrial manufacturing plants, commercial buildings, data centres, and infrastructure projects.
Is the 450NHG3B compliant with IEC standards?
Yes, the Eaton Bussmann 450NHG3B is fully compliant with IEC 60269 and DIN EN 60269, the internationally recognized standards governing low-voltage fuse links. This compliance ensures that the fuse meets defined performance requirements for rated current, breaking capacity, power dissipation, and dimensional interchangeability.
What is a dual fuse element design and why does it matter?
A dual fuse element design incorporates two parallel fuse elements within a single fuse body. This construction improves current distribution, enhances arc quenching performance during fault clearing, and allows the fuse to handle high breaking capacities efficiently while minimising let-through energy to protect sensitive downstream equipment and cables.
How can I order the Eaton Bussmann 450NHG3B in Coimbatore?
You can order the 450NHG3B directly from Shansen Enterprises, an authorized Eaton Bussmann channel partner in Coimbatore. Contact us via WhatsApp or email to check stock availability, request pricing, or place bulk orders. Our team offers prompt response and reliable supply to customers across Coimbatore, Tamil Nadu, and South India.
