Glas-Col 102B 208V 650W Heating Mantle + cord (for 250mm 6.0L round flask) [E4G]
This heating mantle has an electrical receptacle for 240VAC.
It is tested to heat.
It has a hole in the bottom for a magnetic stirrer to fit into.
Its power cord is included and can be plugged into a temperature controller able to handle
650 Watts at 208VAC.
Alternatively, the power specified is 650W, which demands R = 208 * 208/650 =66.6 Ohms, and I measured about 66 at the heater element terminals. So, if you use 120VAC, the power delivered as heat is V**2/R = 120 * 120 /66.6 = 216 Watts. If your wall outlet voltage is more like mine at 124VAC, the power delivered as heat is V**2/R = 124 * 124 /66.6 = 231 Watts. If you want more heat you can wire up 240VAC that is usually around in the US and get power delivered as heat = V**2/R = 240 * 240 /66.6 = 865 Watts. That is more than the mantle is designed for, so be sure to use a PWM controller and set it at 75% or less to keep the outer shell of the mantle from getting too hot if running on 240V.