Size (temperature) of a Thermal fuse for a shop vac motor

[RD Gibb]

Check out this site
Thermtrol Corporation - Our Products
They are the manufacturer of the protection device.

 

[RD Gibb]

I posted a link to Thermtrol the manufacturer but it doesn't seem to be up yet.
The device I found in my eureka vacuum appears to be a SX8AM Series thermal protection device which is shown on the Thermtrol website. I does state that you have to remove power in order for the fuse to reset, so besides cooling down I will have to unplug my shop-vac.

 

[KMoffett]

Yes, I'm aware of resettable over-temperature protection devices, but they are not "thermal fuses". They wouldn't fit into the location of a thermal fuse.

Ken

 

[RD Gibb]

I had to remove the yellow block that held the original thermal fuse entirely from my shop-vac. I will disassemble my shop-vac and get a couple of pictures to show you how it all fit together.

 

[KMoffett]

The thermal fuse is for a PIZZAZZZ pizza baker, not a shop vac. But thanks.

Ken

 

[RD Gibb]

Sorry, this tread was started with a question about a shop-vac.

 

[islandmerv]

ShopVac fuse problems

I work for a large hardware store and do repairs on the Shop Vacs that are returned when they quit working. In 95% of the caseas the thermal fuse has
opened and an ammeter reading ( oscilloscope monitored for peak inrush) plus an analog meter, show no motor defect . Requests to shopvac for additional
replacemenmt fuses go unanswered.

Basic product is OK. Service is NOT.

Recommend do not buy.

I install a fuse holder and put in an appropriate slo-blow fuse reacheable from the outside of the case. Non UL acceptable but in over 75 cases the customer was pleased.

 

[Sceadwian]

Too bad they couldn't have splurged for a resettable fuse of the appropriate rating... It's sad to see a good name like this have problems like that over a trivial preventable issue.

 

[nellie b]

the thermal fuse in most shop vac, are a one shot device . Rigid vac's use a
THERMODISC G4A01121C Fuse, Thermal Cutoff, MICROTEMP G4 Series, 10 A, 250 V, 121 °C, Ferrule, 106 °C

 

[schmitt trigger]

Coffee makers also have these thermal fuses.
If you coffee maker suddenly stops working, it will be 99.9% of the time a blown fuse.

A coffe maker is a device I would NEVER bypass the thermal fuse. The heating element inside can become pretty hot without cooling water.