Relay Contacts: Protective Wiring; Protective Wiring Of Relay Contacts - Burkert 8285 El. COND Mode D'emploi

Relay contacts: Protective wiring

Protective wiring of relay contacts

Relay contacts are subjected to electrical erosion. Especially with inductive
and capacitive loads, the service life of the contacts will be reduced.
For suppression of sparks and arcing, components such as RC combinations,
nonlinear resistors, series resistors and diodes should be used..
1 2
3
Caution!
Make sure that the maximum ratings of the relay contacts are not exceeded
even during switching!
Information concerning relay contacts
As delivered, the relay contacts are suitable for low signal currents
(down to approx. 1mA).
If currents above approx. 100 mA are switched, the gold plating is destroyed
during the switching process. After that, the contacts will not reliably switch
low currents.
Typical AC applications
with inductive load
1
1 Load
2 RC combination, e.g. RIFA PMR 209
2
3
3 Contact
Typical RC combinations
e.g.:
Capacitor 0.1 µF,
Resistor 100 Ohms / 1 W
63