Fuse link - NH2 gG 300A/400V - time-lag 004185121

Knife fuse links – reliable installation protection

Knife fuse links NH are a proven element of electrical protection, protecting against the effects of short circuits and overloads. The design and electrical parameters of these fuse links comply with PN-93/E-06160 (gF), PN-IEC-269 and VDE 0636 standards, which guarantees their reliability and safety of use. The NH2 gG 300A/400V model, thanks to its time-delay characteristic, is perfect for applications requiring tolerance to short-term current surges, e.g. when starting motors.

Construction and application

The NH2 gG 300A/400V fuse link is a component designed to protect electrical circuits with a rated voltage of 400V and a rated current of 300A. Made of high-quality materials – a steatite body, silver-plated brass knife contacts and aluminum covers – it ensures durability and corrosion resistance. Filling the body with quartz sand of a special granulation stabilizes the electrical parameters and increases the short-circuit breaking capacity to 120kA.

It is worth noting the double tripping indicator – a red eye in the central part of the ceramic body and a springy plate on the top cover – which facilitates quick identification of a blown fuse. Additionally, the indicator in the top cover allows cooperation with the NVS 5 microswitch, which enables remote signaling of the fuse link operation.

Advantages and benefits

• Wide application: The gG fuse link is a universal solution for protecting wires and devices against overloads and short circuits.
• High reliability: Compliance with IEC 60269-1 and IEC 60269-2 standards guarantees safe use.
• Durable construction: Steatite body and silver-plated contacts ensure long life and resistance to environmental conditions.
• Fast fault identification: The double tripping indicator facilitates locating a blown fuse, reducing installation downtime.
• Remote monitoring possible: Compatibility with the NVS 5 microswitch enables remote signaling of fuse operation, increasing installation management efficiency.
• High short-circuit breaking capacity: A short-circuit breaking capacity of 120kA ensures effective protection of the installation even in the event of serious failures.
• Optimal time-current parameters: The time-delay characteristic (gG) allows for safe use in circuits with devices with high starting current.