<b>Water Heater Thermal Cutoff is made of special metal that will melt (break) if the temperature exceeds the cut off limit. At that point the cut off will stop the flow of gas to the burner/water heater. The purpose is to cut off fuel in case of fire - and it works.<b></b><br> <br> Designed for your mobile home water heater, this auto spare kit provides a reliable fuse that keeps the RV water heater in top condition and effectively provides you with hot water.<br> <b>Electronic water heater models compatibility:.<b></b><br> For GCH6-4E, GCH6-6E, GCH6-7E, GC6A-7E, GH6-6E, GH6-7E, GH6-8E, G6A-6E, G6A-7E, G6A-8E, GCH6A-7E, GCH6A-8E, GCG6A-9E, GC6AA-7E, GC6AA-8E, GC6AA-9E, GCH10A-2E, GCH10A-3E, GC10A-2E, GC10A-3E, G10-1E, GH10-1E, G610-3E, GH610-3E, G10-2E, G10-3E, GC10-1E, GC10-2E, GH10-2E, GH10-3E, G6A-2E, GH6-3E, G6A-3E, GH6-3E, GH6-4E, G6A-4E, GCH6A-10E, GC6AA-10E, GC10A-4E, GCH10A-4E, XT Series<br> <b>Package include:.<b></b><br><br> 1 x Tinned copper connecting wire 4 x Replacement fuse parts<br> <b>Note:<b></b><br><br> The mention of brand names and any related models above is only for purposes of demonstrating compatibility. Not all applicable models are compatible. Don't bypass it, it keeps your Hot Water Tank from Shorting out and Burning your RV to the ground!!! Make sure you have one, if it doesn't work, replace it! Just wire it in like the old one was.... This kit comes with an extra one. Basically it's like a Fuse for your hot water tank.