Box Ya.01 U1

Box Ya.01 U1 6BS.391.430 contains: contactors designed to control the heating of the saloon and to supply voltage for heating to the head or trailer car of its section; contactors - linear and weakening excitation of traction motors; voltage sensors designed to measure voltage VIP-1000 U1; transformer switch PTRE U2 designed to disconnect the power circuit from the main transformer; reversing switch 1PE.008.2 U2 designed to disconnect the power circuit from the main transformer..2 U2, designed to change the direction of current in the excitation windings of traction motors; brake switch 1PE.008.3 U2, switching the power circuit from braking mode to running mode and back; current relays RE12, designed to protect the power circuit and heating circuit from overloads; reed relays 1PE.008 U2, controlling the current level in the power circuit, designed to switch on the substitution of electric brake by electropneumatic brake.