Functional Devices-RIB TR40VA002 Transformer System Versatility: Supports both direct

System Versatility: Supports both direct acting and reverse acting pneumatic thermostat configurations

The "L" indicates it is a Limit control (normally closed

technicians should check for 24VAC across the side terminals

these are different part numbering conventions for the exact same size two green cartridge

Functional Devices-RIB TR40VA002 Transformer System Versatility: Supports both directFor high reliability power conversion in building automation and HVAC control systems, the Functional Devices RIB TR40VA002 Transformer provides a robust 40VA solution. This heavy duty 120V to 24V step down transformer is engineered for continuous duty applications where stable secondary voltage is critical for powering sensors, driving relays, and managing digital I O circuits. With its inherently limited overcurrent protection, this Class 2 UL 1585