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Can you read the letters and numbers on the component.
The component is placed between the + and - 12v dc supply of two reallyes . I would like to replace this unit or be able to test it.
This unit controlled 2 more 12v Dc reallyes that are connected to a 12v DC hydraulic Pump that switches from forward and reverse.
I have replaced 4 diodes that we're open circuit
The numbers on the component are
07
K309
_________
9908
The K309U I can not make out if there is a U on the end of this number
That "9" and "U" is not a 9 and a U. They are the company logo. The number is 07 K30, which matches the part I mentioned in my post.
Derstrom8
The reversed R with a U is actually a safety mark linked to UL certification. It means the component is a UL recognized component and meets certain safety standards.