Finding the correct illuminated (neon lighted) rocker switch used in the base units for the Weller WTCPS and WTCPT (also WCC100) soldering stations can be a daunting task.
Through the years, Weller has used different suppliers for this switch C&K (ITT) and Carling (621 series) switches, but finding these switches readily available is difficult. Some manufacturers have eliminated the specific model, while others require a special order with a quantity of 100 to 1,000 units.
Specifications of the switch
120 VAC at 8 A SPST (On-None-Off)
120 VAC neon illumination .187" quick disconnects for ease of replacement with existing Weller PU120 wiring
NKK switch and Cherry make 2 candidate switches.
NKK CWSB21CACF (this is DPST version) .. which works by NOT using the "2a" contact (heat shrink insulation over QC lug). Allied Electronics part number: 870-0119 Allied & NKK did not list the SPST version in the catalog. I have personally used this part for replacing a defective switch in a PU120 based unit (WTCPS) - it works fine.
Cherry LR Series ... LRA22H2BBRLN --- SPST Allied part number 908-0105 I have not used this switch, but appears that it should also work (at 97 cents - its an inexpensive trial)
Keep the Weller stations running !
Greg w9gb