GSF3-230AC/8 TNS, 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 L/N, L/PE, N/PE circuits (Uo = 230 V) against surges and high-frequency interference, operating from single-phase network in TN-S systems. Visual control of the operating state of the device is carried out with the help of a green LED.
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