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DTK-120/240CMPLUS Power - Surge Arresters


Availability: In Stock
List Price: $168.69
Product #: 59644


DITEK Corporation has been the industry leader in the design and manufacturing of surge protection devices and systems for more than 20 years. DITEK provides total surge solutions for low voltage CCTV, Fire and Intrusion, Access Control, and Voice/Data/Signal applications, including VOIP and POE. We also offer a complete line of hardwired suppressors and arrestors for main and distribution panels, as well as point of use equipment. A surge arrester is a device to protect electrical equipment from over-voltage transients caused by external (lightning) or internal (switching) events. Also called a surge protection device (SPD) or transient voltage surge suppressor (TVSS), this class of device is used to protect equipment in power transmission and distribution systems. (For consumer equipment protection, different products calledsurge protectors are used.) The energy criterion for various insulation material can be compared by impulse ratio, the surge arrester should have a low impulse ratio, so that a surge incident on the surge arrester may be bypassed, to the ground instead of passing through the apparatus.To protect a unit of equipment from transients occurring on an attached conductor, a surge arrester is connected to the conductor just before it enters the equipment. The surge arrester is also connected to ground and functions by routing energy from an over-voltage transient to ground if one occurs, while isolating the conductor from ground at normal operating voltages. This is usually achieved through use of a varistor, which has substantially different resistances at different voltages. The energy in a handled transient is substantially less than that of a lightning discharge; however it is still of sufficient quantity to cause equipment damage and often requires protection.

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