SGLD automatic change-over switchfHTSB integrates switch and logic control, thus it is not necessary to provide external controller. This truly electromechanically integrated automatic change-over switch has the following functions such as voltage detection, frequency detection, communication interface,

DZ47-100 is such features as delicate appearance, light weight, excellent and reliable performance, high breaking capacity, rapid tripping and mounted by rail. Its enclosure and components

DZ47-63H is applicable to a line of AC 50/60Hz, 230/400V in single pole, 400V in double, three, four poles for protecting overload and short circuit, and rated current up to 63A. It can also be used for

DZ47-63 is applicable to a line of AC 50/60Hz, 230/400V in single pole, 400V in double, three, four poles for protecting overload and short circuit, and rated current up to

DZ47LE-63 is applicable to a line of AC 50/60Hz,rated voltage 230V for single pole two-wire, 2- pole or 400V for 3-pole,3-pole 4-wire, 4-pole and rated current up to 63A.

Expensive electronic equipment is being increasingly used in all kinds of business, industry, government and enterprise and domestic households. Electronic discharge, over voltage caused by switching or by lightning often cause these highly sensitive units to fail.