FIELD: electrical engineering. SUBSTANCE: current-limiting device has input leads 5, 6 for connection into circuit of filament lamp 2 switched on with contactor 4, first transistor 7 of p-n-p type, first reference element 8 with stabilizer-diode volt-ampere characteristic, two resistors 9, 10, second transistor 11 of n-p-n type, three reference elements 12, 13, 14 with stabilizer-diode volt-ampere characteristic and two resistors 15, 16. EFFECT: enhanced efficiency of protection of contact against wear caused by rattling. 1 dwg
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