A nice touch is the economizer, which keeps power draw lower than typical relays.
Sky Electronics SKKPL-3C Relay – 240VAC Coil – 1/3HP – 10 Amp
I like how the heavy duty housing protects the coil, even the panel sees bumps and knocks sometimes.
A nice touch is the clear labeling from ELK, which makes wiring this general purpose relay straightforward even for hobbyists.