Siemens Industrial Controls 3RH2911-1HA22 Contact Block R-407C Designed specifically for air and

Designed specifically for air and non-combustible gases

A higher voltage rating on a capacitor is a benefit and is fully backward compatible

providing critical overpressure protection for hot water boilers and storage tanks

including 0-10 Vdc and 4-20 mA inputs

making it a versatile component for technicians managing R-22 or R-422D systems

Siemens Industrial Controls 3RH2911-1HA22 Contact Block R-407C Designed specifically for air andUpgrade your control panel's logic with the Siemens 3RH2911 1HA22, a high performance 4 pole auxiliary contact block designed for heavy duty industrial automation. This front mount unit features a 2NO + 2NC contact configuration (2 Normally Open and 2 Normally Closed), making it essential for expansion in complex HVACR and motor control circuits. Engineered as part of the SIRIUS modular system, it provides seamless integration with 3RT2 contactors and