Starter switch VK30 B (700.37.00.120) новый, Kharkiv region.

VK30 B tractor starter switch Kirovets K-700,K-701 (700.37.00.120)
VK30 B starter switch, battery switch 700.37.00.120wheel tractor Kirovets K-700,K-701. Two 12-volt batteries are installed on the tractor, one battery on the right and left side of the tractor. When the tractor is running, the batteries are connected in parallel, and when starting, the batteries are connected in series. The VK30 B switch is intended for switching the accumulator batteries from a parallel connection of 12 V to a serial connection of 24 V for powering the starter and the electric motor of the oil-injecting pump drivepump. The switch consists of a contact box with output terminals for connecting wires, an electromagnet with a movable core, contacts, movable contact discs (main and additional), main contacts and additional contacts. 

There are terminals on the end of the switch: +B1, +B2, - B2, RS, M. The following wires are connected to these terminals:

- to terminal +B1 - wires from the positive terminal of the left battery and from the "minus" terminal of the current indicator; 

- to terminal +B2 - a wire from the starter terminal, which in turn is connected to the "plus" terminal of the right battery; 
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- to the terminal - B2 - wire from the negative terminal of the right battery; 

- to the RS terminal - a wire to the winding of the electric motor of the oil injection unit, a wire to the starter relay terminal; 

- to terminal M - a wire from the terminal of the "mass" switch.

On the side surface of the switch, there are two terminals of the electromagnet winding, to which the wires are connected: from the button for switching on the switch and from the "mass" of the tractor.

catalog number 700.37.00.120