This relay fits Jen-Ken's Digital Kilns that run on 240 volts, and the larger 18" and up kilns. Larger kilns usually have 2 or more of these relays.
These relays cycle on and off during the firing. Relays have a life in the 300,000 click range.
If one bank of coils does not heat or stays on, then a new relay is needed.
If a relay fails on, switch the kiln off at the breaker and unplug the kiln. Do not run the kiln again until the relay has been changed. It takes all the relays working together for the kiln to work properly.