General Characteristics

Operation principle

Techno-Elec relays operation is based on the principle of electromechanical magnetic circuit. A
flow is created in the magnetic circuit thanks to a current which goes through it, a permanent
magnet creates an opposite flow which maintains the contacts in the rest position. As soon as the
flow of the magnetic circuit overtakes the one of the permanent magnet, the relay triggers and
closes.

The balancing of this armature and the use of a permanent magnet as a restoring means ensures
rapid switching without any intermediate position. Mechanical principle of our contacts enable
accurate settings.
In order to design a voltage, current, differential or made-to-measure relay, Techno-Elec uses
its magnetic circuits and standard boxes to compose relay blocks that can be adapted to most of
the environments and electrical constraints, and this without additional external power supply.