Siemens Industrial Controls 3RH2921-2DE11 Auxiliary Switch 326070-701 Safety Assurance: Reliably vents flue

Safety Assurance: Reliably vents flue gases and establishes necessary draft pressure to prevent furnace lockouts and carbon monoxide risks

the VT3322 is rated for low-pressure steam up to 15 psig

it is optimized for high-demand environments where maintaining specific temperature and humidity levels is non-negotiable

the GMX120-3 actuator features precise positioning and overload protection without the need for limit switches

using a non-standard guard can restrict airflow and impact the system's cooling capacity

Siemens Industrial Controls 3RH2921-2DE11 Auxiliary Switch 326070-701 Safety Assurance: Reliably vents flueThe 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