Vishay Opto Isolator Model 4N35

https://www.elprocus.com/opto-couplers-types-applications/

thanks for the information

do you have a recommendation on how to modify the circuit or which part # to use.

thank you

No.

great response, thank you

do you have any recommendation to do this? any part # and any modification?

thank you,

One might bung the emitter of the opto-follower into the base of a more substantial transistor, and use that to turn on and off a substantial DC-coil relay, with contacts appropriately-rated for <...120VAC, 15Amp ...>, and an appropriate flywheel diode to prevent the transistor getting fried when the relay turns off.

Specifying the <...part # and any modification...> are really in the domain of the Designer, and not the CR4 subscriber.

To do this properly one should also know what and where the actual load will be. For instance, will your load have any reactive (motor) impedance? How frequently will be the ON/OFF cycle be for this switch, 200 times an hour, ON for 10 seconds, 365 days a year?

Then there are the safety concerns since 120 VAC is lethal and can easily start a fire.

what about changing the opto-coupler to Vishay model CNY65

https://octopart.com/cny64-vishay-39642508?gclid=EAIaIQobChMIh6SI_PmP7wIVUQZ9Ch23tQUwEAAYAiAAEgI7YvD_BwE

please advice

thanks

No.

This has an even lower maximum collector to emitter output voltage (V_ceo) than the last choice. It also uses a BJT for an output device. Did you even look at either part's data sheet?

If your load will actually draw 15A of current at 120 VAC then you should examine a solid state relay like the Opto22 120D45. This will require a heat sink, packaging to prevent fingers from touching lethal line voltages, short circuit protection and properly sized wiring.

The critical information you omit and overlook from this project design worries me. You can hurt yourself and others testing your understanding of electricity at these voltages. Please get hands on guidance about this.

thanks for your concern, now I am considering interposing relay

ABB Type CR-M012DC2L. hope this interposing relay works.

https://search.abb.com/library/Download.aspx?DocumentID=2CDC117002D0204&LanguageCode=en&DocumentPartId=&Action=Launch&DocumentRevisionId=E

12Amps: you want 15

No

Look at the NPN transistor in the output:-

It can only pass current from the collector to the emitter.

Even if it could pass AC look at the maximum current:-

Do a search on Digikey or Mouser for power relays

Narrow the search for SPST (Single Pole Single Throw), > 15Amp and >125VAC

Then choose a DC voltage to match whatever voltage you can apply to the collector of the optocoupler

These

are about 2 US dollars

The 24V version can be driven by 22mA. If you want to use the 12 or 5V versions you will need to add another transistor between the opto. and the relay.

The others have given you the answer, NPN transistors are a DC output device, you might try CX380D5R SSR RELAY SPST-NO 5A 48-530V by Sensata-Crydom. There are other manufactures of these devices but the price isn't too outlandish for experimenting (around $20.00 and available at Digi-Key).