Fuse link - NH3C gG 300A/500V - time-lag 004186221

NH fuse links – reliable installation protection

NH3C gG 300A/500V fuse link is an element used to protect electrical installations against the effects of overloads and short circuits. Designed for industrial use, it meets the requirements of PN-93/E-06160, PN-IEC-269 and VDE 0636 standards. The KOMBI version, equipped with a dual operating indicator, ensures easy and quick identification of burnout – both on the top cover and in the central part of the housing. This facilitates diagnostics and reduces installation downtime.

Construction and characteristic features

The fuse link is made of high-quality steatite, which guarantees thermal stability. The knife contact made of silver-plated brass ensures good electrical contact and minimizes the risk of transient short circuits. The housing filled with quartz sand of a special granulation increases the short-circuit switching capacity to 120kA at 500V AC. This ensures that the fuse link effectively protects the circuit against damage caused by sudden current surges.

Application and benefits

NH3C gG fuse links are widely used in industrial installations, public buildings and anywhere where reliable protection against overloads and short circuits is required. The gG characteristic (full-range) means that the fuse link provides protection against both long-term overloads and sudden current surges. The dual operating indicator facilitates quick location of the damaged element and minimizes installation downtime. Additionally, the ability to cooperate with the NVS 5 microswitch enables remote signaling of fuse burnout, which increases safety and system efficiency.

The rated current of this fuse link is 300 A, and the rated AC voltage is 500 V. It has a gG (full-range) characteristic and a short-circuit switching capacity of 120 kA. The operating indicator is dual (KOMBI), and the housing is made of steatite, and the knife contacts of silver-plated brass.

It is important to remember to select the correct fuse link for a specific application, taking into account the rated current of the load and the expected value of short-circuit currents. Correct selection will ensure effective installation protection and minimize the risk of failure.