85805410012579 Genuine 90 Degree Normally Open Thermal Cut-In Cut-Out Switch for Electrolux Group Ovens and Cookers

Rated at 90 degrees and normally open, genuine Electrolux part 85805410012579 is a thermal cut-in, cut-out switch. Normally open means the contacts stay apart when cool, close once the switch reaches its set temperature, then open again as it cools. In cooking appliances, switches like this often bring a circuit on with heat, a cooling fan being a common example. Check the rating and contact type on your old switch match.

What a 90 degree thermal switch does

A thermal switch reacts to the temperature of the surface it's mounted on. This one is normally open, so nothing flows through it until it warms to around 90 degrees, when the contacts snap closed. That suits jobs that should start only once things are hot, such as running a fan to protect controls and cabinetry. If the switch fails open, the circuit it controls never comes on, and nearby parts can overheat. If it sticks closed, that circuit runs even when the appliance is cold.

Part details

• Genuine Electrolux part 85805410012579
• Thermal cut-in, cut-out switch
• 90 degree rating
• Normally open (N.O.) contacts
• Electrolux group cooking parts, models not on file

Testing and fitting the thermal switch

Isolate power at the switchboard first, and use a licensed electrician if the appliance is hard-wired. With a multimeter, a normally open switch should read open circuit at room temperature. Note the wiring before disconnecting, fit the new switch firmly against its mounting surface so it senses heat properly, and keep the leads clear of hot metal.

Questions about this part

Can I use a normally closed switch instead?

No. A normally closed switch works the opposite way, breaking the circuit when hot. Fitting the wrong type would stop the controlled circuit working when it's needed. Match both the 90 degree rating and the normally open contacts.