Question about mechanical relay

[martintorres]

kellyseye, an opto triac to implement as auxiliary firing a triac may be, but this would only much smaller engine ... We are talking about 30-40 amp in starting, and then drop to 10/12 amp rated. To work with a triac, uqe would not only have to be a motor with brushes, but also the inductance you'd have to build a triac to implement, would be quite large and without knowledge of electronics, you will make it impossible.
If I were you, instead of making the circuit with relay, contactor and implement a shot of this, it could be a relay or with a Optotriac

NOTE:
motor a escobillas del tipo universal = motor ac universal brush:


contactor:


(aclaro y menciono por el tema de la traduccion)