Siemens Industrial Controls 3RH1921-1EA20 Contact 326058-757 ensuring exact fitment in the

ensuring exact fitment in the inducer housing or bracket

the VRG series is designed for dual-purpose operation

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

Can I use this on different HVAC brands

This unit features an adjustable setpoint range of 10 to 250 psi

Siemens Industrial Controls 3RH1921-1EA20 Contact 326058-757 ensuring exact fitment in theThe 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