Siemens Industrial Controls 3RH2921-2DE11 Auxiliary Switch 323613-751 half-wave) or 24 VDC (±10%)

half-wave) or 24 VDC (±10%)

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

and Protech air handlers and furnaces

F fixed differential

Siemens Industrial Controls 3RH2921-2DE11 Auxiliary Switch 323613-751 half-wave) or 24 VDC (±10%)The 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