Solid State Relay (SSR) 40A AC

SKU: MOD-091

Sale priceR 115.86

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In stock (20 units), ready to be shipped

Solid State Relay (SSR) 40A AC.

A solid-state relay (SSR) is an electronic switching device that switches on or off when an external voltage is applied across its control terminals. A solid State Relay can be switched by a much lower voltage and at a much lower current than most mechanical relays. Also, because there are no moving contacts, solid-state relays can be switched much faster and for much longer periods without wearing out.

Solid State Relays are a great way to control large external AC loads safely. The input is fully optically isolated from the control circuitry so that you do not damage your microcontroller when things go wrong on the high voltage and amps side. Currents higher than 10A need external cooling is required because they can get hot, but they are not expensive, and we do sell them also.

Heatsink for this SSR: SSR Heatsink
Top cover for SSR: SSR top cover

Datasheet: ssr_40A_DA

Solid State Relay (SSR) 40A AC Specification:

Input voltage: 3-32VDC
Output voltage: 24-380VAC
Output current: 40A
Working voltage: 250V
Size: 5.9 x 4.5 x 2.3cm

Customer Reviews

Based on 5 reviews
Fake SSR's

For the price these must be fake, which usually means they will burn down your house and are rated much lower than this.

Lamla S.
SSR 40A - DA


I have only tested one up to now and it worked very well. I will be deploying them in numbers starting from next month (Apr) and will keep you informed. As soon as I require them in numbers , e,g (100+) I will let you know.

Nitin D.

excellent service. Goods came very fast. no issues... Im impressed


Excellent service .. thanks a million

Dion V.d.b.

Fast service

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