I am amazed that a product sold and rated by a safety organization (USA UL) will list an electrical product rated a 15 amperes, 1,875 watts at 125 volts...but lists the maximum combined load for resistive lamps is 1,000 watts, and an electronic ballast load is 500 watts. I suspect they have not considered inductive loads for this device.
Now with more questions than answers, I open up one of these switching devices to look at the components and see if they have manufacturer's engineering data sheets that usually are more detailed and accurate.
So I open it up and this is definitely a defect condition IPC Level 1 soldering job. But the cube relay checks out, as they are a Taiwan company and did appropriate engineering testing and multiple certification listings. Oh well, I'll clean these up and put them into service.
#IPC #soldering #UL #safety