VD4-12 Circuitus interruptor operatus a molla, circuitus controlis et signali (Modulus mechanismi operationis)

SFA:commutator conversivus
SFB:botto commutationis
BB:relais thermicum
BT:metri temperaturae
MS:motor storationis energiae
QF:interruptor aeris directi
QC:commutator terrae
WCC:Centrum Connectionis Filorum
V:ponts rectificationis
Interna armati dividitur in interna vehiculi circuitoris interruptoris