Key Benefits Fail-Safe Design: Normally Open function ensures continuous flow during power interruptions for critical heating circuits

Designed as a rugged OEM replacement part for York and Johnson Controls equipment

Sleek Professional Finish: The deep black color provides a modern

Normally Open (N/O) Logic: Integrated safety design prevents startup if the switch is stuck in a closed position at the beginning of the cycle

providing the necessary clearance for actuators mounted away from the damper frame due to insulation or physical obstructions

Siemens Building Technology RAA20U Thermostat Els PW 17895 Key Benefits Fail-Safe Design: NormallyThe Siemens RAA20U Thermostat is a high performance mechanical solution designed for precision temperature control in heating only or cooling only applications. Functioning as a two wire, gas diaphragm based room thermostat, this unit offers a reliable two position (on off) control algorithm suitable for both 24V low voltage and line voltage systems (24 to 277 Vac). As a veteran technician knows, the Siemens RAA20U is the direct replacement for 1A10