Yesterday I thought it would be simple: just get one from one of the refrigeration supply houses.
So I called my local Honeywell distributor - 90% controls. And all they had was a RIB intended for residential use: humidifier or whatever.
Under the gun to make this freezer work; I used it, with a transformer and isolating micro relay, to power the oil pressure safety heater. But a direct-use relay would have been Way simpler. <g>
What and where do you all get them?