Design
The basic design of electromechanical power relays is the same regardless of whether it is a miniature PCB relay or an industrial power relay.
The most important components are:
Contact system or secondary side
- fixed contacts
- moving contacts (contacts being moved by the magnetic system (motor) to switch the load circuit)
- contact springs (holding the contacts, but sufficently flexible to allow the contacts to move)
Magnetic system
- coil (to generate necessary magnetic field to actuate the armature and the contacts)
- core
- joke (to establish the magnetic circuit)
- armature (the moving part of the magnetic system which closes and opens the magnetic circuit and acts via comb or acturator on the moving relay contacts)
- return spring (to establish a defined position of the magnetic and contact system in case the coil is not energized)
| Title: | Electromechanical Relays |
| Format: | |
| Size: | 0.2MB |
| Pages: | 3 |
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