Siemens Industrial Controls 3RH1921-1DA11 Switch mario Key Benefits for HVACR Contractors:

Key Benefits for HVACR Contractors: Precision Regulation: Provides accurate draft control at levels higher than standard draft diverters

Precision Sealing: High-performance design eliminates the need for messy liquid sealants on flanged compressor joints

The rugged construction of this replacement actuator and trim ensures a high Cv rating of 0

it meets strict manufacturer tolerances for 1/2-inch ODF connections

2-way normally closed solenoid valve designed for general service in high-demand HVACR and industrial fluid control systems

Siemens Industrial Controls 3RH1921-1DA11 Switch mario Key Benefits for HVACR Contractors:Optimize 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