ESN-320 (Klen) 1980
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Voltage stabilizer "Maple" type ESN-320 since 1980 produced the Moscow plant "Elektropribor". Electromagnetic stabilizer "Maple" is designed to maintain a voltage of 220 V when the voltage in the network. Power load can reach values "‹"‹of 320 watts. Price stabilizer 40 rubles.
Documentation:
Information from collection of Valery Khartchenko