Siemens Industrial Controls 3RH2921-2DE11 Auxiliary Switch 323613-751 The "X" handle position provides

The "X" handle position provides clear visual confirmation of the valve status

and Protech air handlers and furnaces

it must be used with Polyolester (POE) oil to ensure proper lubrication and miscibility with the refrigerant

replacing the PLA090 restores the necessary tolerances for smooth rotation

Siemens Industrial Controls 3RH2921-2DE11 Auxiliary Switch 323613-751 The "X" handle position providesThe Siemens 3RH2921 2DE11 is a high performance auxiliary switch block designed for seamless integration with SIRIUS 3RT2 contactors and 3RH2 contactor relays. This front mounting module features a 1NO + 1NC (1 Normally Open 1 Normally Closed) contact configuration, engineered specifically for electronic compatible signaling in demanding industrial environments. As a direct replacement for the legacy 3RH1921 2DE11, it maintains a compact form factor