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)
http://www.cherrycorp.com/english/rockers/lr_rocker.htm

Keep the Weller stations running !

Greg
w9gb