Toroidal transformer INDEL TST 600/008 with output voltage of the secondary winding, 2 x 24 VAC - 2 x 12,5 A and Power 600 VA.
The transformer is a device that transfers electrical energy from one circuit to another through wires - transformer windings. AC in the first primary coil creates an alternating magnetic flux in the transformer core and thus alternating magnetic field in the second coil. This alternating field induces a variable electromotive force (voltage) in the secondary coil. Described effect is called mutual induction.