What is a Solid State Relay?

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Solid state relays (SSR) are used for switching on and off applications without the use of movable contacts. They are usually modular in design and have a long life span. This video covers Zero switching, Instant On, Peak Switching and Analog switching SSRs.

With respect to the usage, installation or assembly of any products described in this video, Galco Industrial Electronics, Inc., a Michigan corporation, encourages you to follow the requirements and/or guidelines of: i) the Occupational Safety and Health Act of 1970, Public Law 91-596, as amended, and all laws, rules and regulations implemented in relation thereto; ii) the National Electric Code®; and iii) NFPA 70E®. Any installation, assembly or work described in this video should be performed by a qualified licensed electrician.

LEGAL DISCLAIMER:
While we have made every attempt to ensure that the information provided is accurate and has been obtained from reliable sources, Galco is not responsible for any errors or omissions, or for the results obtained from the use of this information. All information is provided "as is", with no guarantee of completeness, accuracy, timeliness or of the results obtained from the use of this information, and without warranty of any kind, express or implied, including, but not limited to warranties of performance, merchantability and fitness for a particular purpose. At all times you should defer to the instructions and safety guidelines issued by the manufacturer. In no event will Galco, its agents or employees thereof be liable to you or anyone else for any decision made or action taken in reliance on the information provided to you or for any consequential, special or similar damages, even if advised of the possibility of such damages.

[CosmicRadishes]

Thanks for short and clear explanation. Most videos on the topic are 10 minutes long and hard to watch.

[rich]

You have to test solid state relays in diode mode, since triac based SSR's will not show direct continuity across the switched side even when fully turned on, but will show a ~1v voltage drop in diode mode.

[MrHydroguy]

Thank you for the explaination. I was wondering why I was watching this item on ebay and now I know what for.

[sanketshah]

It was short but an informative video. Does SSR provide short circuit protection?

[johnny-yd]

Hello Everyone, I have a small question about SSR D1D100, I have a battery output connected through SSR to Load Motor, and I can easily Turn On and Turn OFF SSR D1D100 with input Voltage as wanted..but it is only Battery Discharge Mood connecting Motor but When i want to charge the battery, I have same SSR connected and Charging through Relay in to Battery(I can also Stop Charging by Turn OFF Relay and TURN ON Relay to Charge was the IDEA) ..So I don't know why these SSR works few days and Goes always TURN ON Mood? so my question is are these SSR D1D100 only used to connect load and discharge not to Charge Battery ? Unidirection not Bidirectional? Thank you for your Helpful Answer

[heatherlynnbennett]

I have a four wheeler with a light bar that uses a relay, I'm having a problem with the relay getting water in it, can I use a solid state relay to fix the problem.

[brandonpillay]

Back to you in the studio. Great video.

[mohammaddairyah]

thanks. where can I get ssr_40va . thanks

[luciobelisario]

how to check SSR if good or bad? CRYDOM A2440, Input is 90-280VAC - Out put is 240VAC 4A

[ammaralyasiri]

if to use two source 24vdc can i use VC5401 RELAY for isolated two source

[IanG]

Our elevator maintenance vendor is quoting $2, 800 to replace our old mechanical starter with a new solid state one. Does this sound like a fair price and do you have any recommended installation vendors in the Los Angeles area?

[jahidilias]

which detector is the best detector in the world now??

[andrewlockwood]

Hi can you advise please, I'm using contactors to switch capacitor into and out of a motor circuit running at 415 vac 50 hz. The max capacitor size will be max 600 microfarad. The circuit will be triggered by 240 vac using voltage control relays but I need the SCR to switch at Zero cross over and then when the voltage builds to switch off at zero cross over. I will also need I believe a snubber circuit . Can you recommend any items please? Many thanks Andrew

[igrewold]

Any hobbyists(/DIYers/Makers) around?
What kinda SSR do you usually use? Or mostly needed for common projects?
TIA

[USMANALI_Videos]

thank you so much for the information. nicely explained.

[_hadisalame]

Can I sense when AC power off? from the other side ?

[Renaldo]

You made my solid state relay activate.

[sammyspaniel]

I am trying to build a powder coating curing oven. I need some SSRs but don't know which kind. Back to google.

[Thetrucky]

This woman is absolutely BEAUTIFUL and SMART too :-) excellent information.