GSF3-230UC/32 IT (LT), TU 3428-002-79740390-2007 is an ultrasonic protection device of test class III, according to GOST IEC 61643-11, with built-in single-phase noise suppressing filter. It is intended for protection of sensitive electronic equipment of end users in AC/DC circuits against surges and high-frequency interference, operating from single-phase network in IT, TN-C, TN-S systems.
Visual control of the operating state of the device is carried out by means of a green LED. For remote control the device is additionally equipped with a "dry" contact of remote signalling.
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