This Micro Switch Assembly is used in the Mechanical Low Water Cutoff and Feeder MM150 on Mr.Steamís Commercial CU model steam bath generator models CU2000 - CU4500.
The Micro Switch Assembly is an electronic (non-mercury) switch.
If the existing CU steam bath generator has a mercury switch, then the entire MM150 needs replacement, not just the switch. Mercury has been discontinued for quite some time and this Micro Switch will not fit in the head assembly of an old mercury system.
One (1) Micro Switch Assembly per steam generator.
Note: To preserve the originality, operation and safety of replacement parts, this product is not returnable.