and extending up to 400 series units depending on the specific assembly configuration

High-Temp Resilience: Manufactured from advanced polymers that resist warping and cracking in high-heat environments

Standardized Fit: The 1/2" bore size accommodates common direct-drive motor shafts used in Lennox air handlers

this SERV VALVE KIT 5/8 SWT is designed to handle high-pressure residential and commercial refrigeration environments without losing its seal

3" WC setpoint eliminates field adjustment errors and reduces callback rates

Siemens Industrial Controls 3RH2911-1HA22 Contact Block 320735-701 and extending up to 400Upgrade 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