After receiving complaints (hat tip to Mr. O'Brien on BW for his detailed feedback), in 2018 we made several design changes to URO
Overload Protection Relay 201 540 3745. We made the circuit board traces wider to handle heat better, and added plastic insulators to prevent PCB to metal case shorts.
In fact, if you check verified buyer reviews on that big "jungle" online retailer, we received nothing but 5-star reviews in 2019 and 2020 for our updated version of OVP relay 2015403745 !