guard rods should be used to protect the 5/8" OD glass from physical impact

Industrial Build Quality: Features robust construction to withstand the high-moisture

reducing the need for additional capillary tubes or mounting brackets

It should not be used to replace traditional standing pilot assemblies

this genuine replacement part eliminates the guesswork of fitment

Siemens Industrial Controls 3RH1921-1DA11 Switch 323055-751 guard rods should be usedOptimize your control circuitry with the Siemens Sirius 3RH1921 1DA11, a precision engineered auxiliary switch block designed for secondary switching and status feedback. This first lateral mount unit features a compact 10mm width and provides 1 NO (Normally Open) and 1 NC (Normally Closed) contact configuration. Engineered for industrial reliability, it integrates seamlessly with Sirius 3RT1 contactors and 3RH1 contactor relays from sizes S0 through