With the 4 Pack you get enough relays to handle multiple tasks around the workshop.
SEG Electronics MRL1-110D Lock Out Relay (Used)
A nice touch is that the DIN-rail housing snaps in cleanly, so you can focus on the connections.
The relay carries ID KUP-14D15-24=KU, and you will find that it is easy to verify.
A nice touch is the Honeywell brand, which you will find helps this relay blend with other gear.