NH insurances, from the melting wire insurance group and overstand the over current (overload currents and short circuit currents) provides protection by cutting the circuit with the heat effect of the wire in it.

nh insurance mainly;

silver contacts

quartz sand

melting wire

Steatitis consists of the body.

nh insurance working principle

The melting wire contained in NH insurance is heating when excessive current occurs in the circuit and breaks from different points. The electrical transmission is completely discontinued by filling the quartz sand into the gaps between the broken parts of the melting wire. In order to prevent damage to the arc during the interruption of electrical transmission, the Sigma NH Counter insurances are made of heat and pressure resistant steatitis body.

NH Insurances can be used in horizontal type load separators, in vertical type load separators or with the NH insurance latter.

What are the insurance usage areas?

NH knife fuse bustles are widely used in low voltage distribution networks, industry, workplaces and housing houses due to their superior protection features and economic features and economic distribution panels, compensation panels and building kofre entrances are also widely used in street lighting panels.

What are the differences between nh insurance and automatic insurance?

NH fuses and automatic fuses are used to protect against over currents, but there are many basic differences between them. The short -circuit capacity of NH insurances is much higher than automatic insurance, the duration of response to short circuit currents is much faster, and the response time against overload currents is slow. When NH insurances are exposed to excessive current once, automatic insurances can be used repeatedly.

Why Sigma NH knife fuse should be used?

Sigma NH knife fuses, compact dimensions, TS en and IEC standards provide safe protection thanks to full compatibility. Steatitis is made of heat and pressure -resistant body and excessive flow during the cutting of the excessive current without any danger to damage safely. Sigma NH knife fuses have an indicator on the steatitis body as well as the indicator (indicator) on the top cover. Thus, it is easily understood that the NH insurances used in combination with the load separators are disabled, and as well as with the return of the indicator on the steatitis body to red color.