CG Solid State Relay SSR-100DA DC to AC Input 3-32VDC to Output 24-480VAC 100A Single Phase Plastic Cover…

I live off-grid in a solar powered cabin. All of my construction is permitted and being inspected. Since I started construction, the NEC (National Electric Code) has changed somewhat. Prior to receiving my certificate of occupancy, I must have a rapid shutdown method implemented in my solar power plant to protect firefighters. My inverter can supply up to 60 surge amps to the main electrical box. Thus, I purchased this SSR 100 DA solid state relay. It was put in series with the output of the inverter and I have an outdoor waterproof emergency shutdown button conspicuously placed so that firefighters can easily find it. When it is depressed, it de-energizes this SSR, effectively killing all power to the cabin immediately. I've tested the SSR under light and heavy load. It has performed well.

I have a 5HP dust collector motor that I use this with. It is on a 20A 240V circuit breaker, but the in-rush current is around 100A, so I burned out my last SSR which was only rated for 45A or so. Update: 1 year later, still going strong.

Stopped working after 5 months for a 230v 20A irrigation pump controller. I sized it correctly for the starting amps. When switched on, it was able to output the 230v but somehow not supply enough amps to turn the pump. When I bypass this switch, pump works fine. Junk IMO search elsewhere.

I am using this relay in a DIY spot welder to connect 120V AC power to a modified microwave oven transformer. The relay was supposed to be triggered by an Arduino-compatible 3.3v micro board. I noticed that although it appeared to be working fine (the red LED lighted up when triggered), the transformer was heating up rapidly to a smoke point while barely producing any power on secondary coil. After a long troubleshooting session which involved a thorough examination of the transformer and all the circuitry, I found the culprit -- it was the relay which, when triggered by 3.3 volts, was entering a peculiar "half-on" state, apparently closing the circuit only for brief moments during AC power cycle. That was throwing the transformer out of balance and causing it to heat up. I had to add a transistor to my circuit which boosted the trigger signal from 3.3 to 5 volts, and that finally solved the issue.

Good quality excellent functionality

My 40 amp melted when controlling my heating system in my small green house replaced it with this one an has worked great and lasted through the first heating season without a problem

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3.3v was not enough to turn on the relay resulting in a partially open state. Requires higher control voltage to fully turn on. Once a higher control voltage is applied it functions as expected.