Siemens Industrial Controls 3RH1921-1EA20 Contact 326058-757 The -S indicates that this

The -S indicates that this unit is equipped with a built-in auxiliary switch for end-stop verification or component interlocking

Whether you are servicing low-temp or medium-temp units

ensuring exact fitment in the inducer housing or bracket

it can often replace single-pole equivalents like the 626259R in specific wiring configurations

This internal geometry allows gas to pass through without direction changes

Siemens Industrial Controls 3RH1921-1EA20 Contact 326058-757 The -S indicates that thisThe 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