Description
The Eaton Bussmann 400NHG03B is a 400A NH size 03 Low-Voltage DIN-Type Dual Fuse Link classified gL-gG in accordance with IEC 60269 and DIN EN 60269. Engineered for full-range overcurrent protection, this fuse link combines a robust dual fuse element design with proven Eaton Bussmann manufacturing quality, delivering consistent and predictable performance in demanding low-voltage power distribution environments. Its compact NH03 blade-contact form factor ensures straightforward installation and interchangeability in standard DIN-compliant fuse bases and switch-disconnectors.
The 400NHG03B is ideally suited for a wide range of low-voltage applications including main and sub-distribution boards, LV switchgear assemblies, motor control centres, transformer secondary protection, bus bar feeder protection, and cable overcurrent protection in industrial plants, commercial buildings, and infrastructure projects. Its 400A rating makes it particularly effective for protecting high-current feeder circuits where reliable fault clearance is critical to system uptime and personnel safety.
From a technical standpoint, the 400NHG03B offers a high breaking capacity consistent with IEC 60269 requirements, ensuring safe fault clearance under short-circuit conditions without damage to surrounding equipment. The DIN-type construction guarantees dimensional compatibility with standard NH03 fuse holders and withdrawable fuse carriers. The gL-gG classification confirms full-range protection capability, meaning the fuse responds reliably to both overload currents and high prospective short-circuit currents, protecting cables, busbars, and connected equipment throughout the entire overcurrent range.
Eaton Bussmann is a globally recognised leader in circuit protection, trusted by OEMs, panel builders, electrical contractors, and consulting engineers across more than 100 countries. Their NH fuse link range is manufactured to stringent quality standards, backed by decades of application engineering expertise, and supported by comprehensive technical documentation and certifications. Specifying Eaton Bussmann products gives engineers and procurement teams confidence in performance consistency, regulatory compliance, and long-term product availability.
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 for competitive pricing, stock availability, lead time enquiries, and bulk order discounts on the 400NHG03B and the full range of Eaton Bussmann fuse links, fuse bases, and switchgear accessories.
What does NH size 03 mean in fuse 400NHG03B?
NH size 03 refers to the standardised physical dimension category of the DIN-type fuse link as defined under DIN EN 60269. Size 03 specifies the blade contact dimensions, overall body length, and the current rating range the fuse can safely accommodate, ensuring dimensional interchangeability with all NH03-compatible fuse holders, switch-disconnectors, and withdrawable fuse carriers from any manufacturer compliant with the standard.
What does class gL-gG mean for the 400NHG03B?
The gL-gG classification per IEC 60269 denotes a general purpose fuse providing full-range overcurrent protection. The g prefix indicates the fuse is capable of breaking currents from the minimum fusing current up to the rated breaking capacity. The L and G suffixes refer to line protection and general application protection respectively, confirming the 400NHG03B is suitable for protecting cables, conductors, transformers, motors, and general electrical loads against both overload and short-circuit conditions.
What are the typical applications for the 400NHG03B?
The 400NHG03B 400A NH03 dual fuse link is widely used in low-voltage main and sub-distribution boards, LV switchgear panels, motor control centres, transformer secondary circuits, bus bar feeder protection, and cable overcurrent protection in industrial manufacturing facilities, commercial complexes, data centres, and utility infrastructure projects.
What is the significance of the dual fuse element design in the 400NHG03B?
The dual fuse element design in the 400NHG03B provides enhanced protection characteristics by combining two fuse elements within a single fuse link body. This construction improves the fuse’s time-current response accuracy, helps manage the energy let-through under fault conditions, and contributes to consistent performance across both overload and short-circuit scenarios, extending the service life of downstream equipment.
Is the 400NHG03B compliant with IEC and DIN standards?
Yes, the Eaton Bussmann 400NHG03B is fully compliant with IEC 60269 and DIN EN 60269, the internationally recognised standards for low-voltage fuses. Compliance with these standards ensures the fuse meets defined requirements for rated current, voltage, breaking capacity, power dissipation, and dimensional interchangeability, making it acceptable for use in installations governed by international and European electrical regulations.
How can I order the Eaton Bussmann 400NHG03B in Coimbatore?
You can order the 400NHG03B directly from Shansen Enterprises, an authorized Eaton Bussmann distributor located in Coimbatore, Tamil Nadu. Contact us via WhatsApp or email to enquire about current stock availability, unit pricing, bulk order discounts, and delivery options across South India.
