This 3-zone control system is designed to interface with most conventional 24V programmable or non-programmable thermostats

utilized by the controller to determine the saturated suction temperature

5" mounting base

this specific model is engineered for R-22 and R-407C refrigerants

86 cm³ and is engineered for optimized thermal management in light commercial refrigeration

Siemens Industrial Controls 3RA2921-1AA00 Link Module 318518-761 This 3-zone control system isThe Siemens 3RA2921 1AA00 Link Module provides a direct mechanical and electrical connection between SIRIUS 3RT20 contactors and 3RV20 motor starter protectors. Engineered for S0 contactors with screw terminals, this link module eliminates the need for manual wiring in the main circuit, reducing potential failure points and installation time. The unit is designed for load feeders requiring a rigid, vibration resistant bridge that maintains electrical