Looking for a design to activate a solenoid when a set current is exceeded in an AC circuit.

Thread Starter


Joined Nov 27, 2016
I have a home made diesel generator. What I am looking for is a circuit that when current exceeds 5 amps it activates the high idle solenoid. I see many that sense when any load turns on, but I would prefer slightly higher activation threshold.
Thank you for any help folks.
The Great Canadian Hillbilly.


Joined Jul 18, 2013
You can get the ACS712 modules on ebay for about $2.00
They come in different current limits.
I would suggest looking for one with the substantial terminals as some come with very small under rated type.