Fuse link, LV, 630 A, AC 500 V, NH3, gL/gG, IEC, double indicator 630NHG3B

Reliable installation protection with Eaton NH3 630A fuse link

This low-voltage fuse link from the Eaton Bussmann series is a key element in protecting electrical installations from the effects of overloads and short circuits. Designed to operate in AC 500V circuits with a rated current of 630A, it provides effective protection for both equipment and wiring. The NH3 standard design with gL/gG characteristics guarantees delayed tripping during short-term current surges, which is particularly important when starting motors and other devices with high inrush current.

This fuse link is indispensable in industrial and commercial applications where high reliability and safety are required. Thanks to the use of high-quality materials and precise workmanship, it ensures long-lasting and trouble-free operation. The dual blown indicator facilitates quick identification of a blown fuse, minimizing downtime and speeding up the repair process.

Construction features and application

The 630NHG3B fuse link is characterized by a solid construction with a ceramic body and knife contacts. The absence of metal insulated grips (IMGL) simplifies installation and removal. Compliance with IEC 60269-1 and IEC 60269-2 standards and DIN 43620 confirms its high quality and safety of use. It is an ideal solution for installers looking for reliable components for building safe and efficient electrical systems.

• gL/gG protection: The gL/gG (formerly gG) characteristic provides protection for wiring and equipment against overloads and short circuits. It allows for short-term exceedances of the rated current without unnecessary tripping, which is important when starting motors or other devices generating high inrush current.
• Dual blown indicator: Enables quick visual identification of a blown fuse – both from a distance and up close – which greatly facilitates fault diagnosis.
• NH3 standard: Ensures compatibility with a wide range of NH fuse holders, which simplifies replacement and modernization of existing installations.
• Breaking capacity: A breaking capacity of 120 kA guarantees effective circuit interruption in the event of a short circuit, minimizing the risk of damage to equipment and installations.
• Compliance with standards: Meeting the requirements of IEC 60269-1, IEC 60269-2 and DIN 43620 confirms the high quality of the product and its compliance with applicable safety regulations.

Installation and safety

The fuse link should be installed by a qualified electrician in accordance with applicable regulations and safety standards. Before replacing the fuse, disconnect the circuit from the power supply! Make sure that the new fuse has the appropriate characteristics and rated current for the given application. The blown indicator allows for quick identification of a blown element without having to disassemble the entire system – which increases work safety.