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The Cooper Bussmann® NH fuse link range uses the latest technology to provide class leading fuse link
performance and reliable indication. With a unique patented dual indicator design capable of operating a micro switch for remote fuse indication, Cooper Bussmann provides one of the most reliable solutions available. The range is fully compliant with IEC 60269 standards with VDE 0636-2 third party approval and complies with the dimensional requirements of DIN 43620 for ease of use.
In order to help select the correct product for an application, Cooper Bussmann provides the following application notes.
Before making a fuse link selection the following information should be known about the system or circuit to be protected.
For general applications or cable protection, the standard gG (general purpose) NH fuse link should be considered. For Motor protection applications, the aM (motor protection) NH fuse link should be considered. Motor Protection (aM) fuse links have partial range breaking ability and cannot clear low overload faults. They should only be applied to circuits also protected by a motor protection relay or where only high short-circuit faults could occur. Please note that misapplication of a fuse link can be dangerous, consult Cooper Bussmann if there is any doubt over fuse link selection.
Cooper Bussmann NH fuse links are available in three voltage ratings, 400V, 500V and 690V. These are maximum voltage ratings and should not be used where the system voltage could exceed the fuse link’s maximum rating.
In accordance with IEC standards, Cooper Bussmann NH fuse links are tested to carry full load current. The rated current of a fuse link should be equal or greater than the operational current of the circuit and equal or smaller than the continuous current carrying capacity of the conductor. The standard gG (general purpose) NH fuse link with a conventional fusing current of 1.6 times rated current will give
assured cable protection against the effects of overcurrents.
Cooper Bussmann is the world’s first true manufacturer of a complete range of Lead and Cadmium
free NH fuse links. Negating any legislation concerns regarding the amount of hazardous materials
permissible within the fuse links.
Cooper Bussmann is dedicated to produce recyclable products and is a member of an industry recognised
recycling scheme. The “HRC” symbol on Cooper Bussmann NH fuse links define the product suitable
for recycling, limiting disposal cost.
Cooper Bussmann patented dual indicator provides clear indication, ensuring extremely reliable
local and remote* signalling, decreasing fuse link replacement time and costs.
* with the use of an optional microswitch accessory
Cooper Bussmann NH “low watts loss” fuse links reduce overall operating costs and carbon
footprint through lower energy consumption and heat transfer to equipment.
Cooper Bussmann NH fuse links are tested and comply with IEC 60269, DIN 43620, VDE, CE,
CCC (China), RoHS and can be recycled, ensuring global acceptance.
Frequently asked questions about NH fuses.