Siemens Industrial Controls 3RH1921-1EA20 Contact 326058-757 Can this switch be used

Can this switch be used for both positive and negative pressure monitoring

ensuring exact fitment in the inducer housing or bracket

This internal geometry allows gas to pass through without direction changes

while the EPDM seat ensures a tight seal up to a 250°F maximum temperature

Siemens Industrial Controls 3RH1921-1EA20 Contact 326058-757 Can this switch be usedThe Siemens 3RH1921 1EA20 is a high performance SIRIUS auxiliary switch block designed for veteran contractors and electrical technicians. This side mount auxiliary contact features a 2NO (Normally Open) configuration, specifically engineered for seamless lateral integration with SIRIUS 3RT1 contactors and 3RH1 control relays. Built to withstand rigourous industrial environments, it supports frames from sizes S0 to S12, providing consistent feedback