Warm Cubic Relay

[Wakadui]

I have a G. Cartier 12v 25a cubic relay attached to wiring heading to navigation instruments on my Beneteau. I gets warm with use! Per tech sheet voltage drop is minimal, <5m V/A. Wires attached to it are solid. Why is it warm? photo (1).JPG Views: 244 Size: 38.3 KB ID: 19061" style="margin: 2px" />

[GordMay]

Originally Posted by Wakadui

I have a G. Cartier 12v 25a cubic relay ...
... Why is it warm? Attachment 19061

Because it’s dissipating about 65 watts of heat.
➥ Products - CUBIC RELAY

[Minggat]

It takes power to the coil, just like a lightbulb would, to close the contacts. (think coil-lightbulb). Coil is one circut, contacts are another.