Klassificering af relæer

Classified according to the working principle or structural characteristics of the relay: 　

1. Electromagnetic relay: An electrical relay that uses the suction force generated between the electromagnet core and the armature by the point in the input circuit.　　

2. Solid state relay: refers to a kind of relay whose input and output are isolated in which electronic components perform their functions without mechanical moving parts.　　

3. Temperature relay: A relay that acts when the outside temperature reaches a given value.　　

4. Reed relay: A relay that uses the reed action sealed in the tube and has the dual functions of the electric contact reed and the armature magnetic circuit to open, close or switch the circuit. 　　

5. Time relay: When the input signal is added or removed, the output part needs to be delayed or time-limited before closing or disconnecting the controlled circuit relay until the specified time.　　

6. Høj-frekvensrelæ: Bruges til at skifte høj-radio-frekvenskredsløb med minimalt tab.

7. Polarized relay: a relay that has a combined action of a polarized magnetic field and a control current through the magnetic field generated by the control coil. The operating direction of the relay depends on the direction of the current flowing in the control coil.　　

8. Andre typer relæer: såsom optiske relæer, akustiske relæer, termiske relæer, instrumenteringsrelæer, Hall effekt relæer, differentiale relæer mv.