Hi
I would like to use Shelly Plus 1 relays to control banks of several 20W and 40W 240VAC LED battens. In each bank there'd be up to a total LED load of 200W.
I have read that the instantaneous current drawn as the LED powers up can be >100x normal operating current for a few msec. The specs of at least one of the lights that I found quote a figure of 26A inrush on startup.
I initially thought I'd use Shelly Plus 1's for each as the relay is rated to 16A but now I think I will use the Shellys to drive a contactor to avoid them getting destroyed.
From looking into it, LED drivers with this large instantaneous load can be problematic for contactors too. The only contactors I've found that really seem to address this are the Schneider iCT range.
https://www.electrical-installation.org/enwiki/LED_lamps_-_choice_of_contactors
A cheaper alternative might be a contactor with a larger rating.
I have also looked into inrush current limiting devices like
I was just wondering if anyone comment as to how well / whether the Shelly output relays for e.g. a Shelly Plus 1 or Shelly Plus 2PM cope with this kind of short duration instantaneous load?
If other's have used Shelly's with contactors for LED loads successfully over a long term I'd be very grateful if they could share their experience and details of the type / brand of contactor that they have used.
Thanks
