Features: Step down your HVAC system's electric efficiently with this 40VA Furnaces Converters, designs for smooth compatibility with , , Carriers systems (208/240V to 24V conversion). Crafted with strong brass windings and a fully enclosed metal casing, this industrial Converters ensures dust/moisture resistance and long terms reliability in demanding environment . Perfect for HVAC technicians, homeowners, and facility managers requiring precise 24V power delivery for Furnaces control, thermostats, or relays circuits. Safely power control in industrial equipment, residential heating unit, air compressors, and ventilation setups with ≤40VA load requirements. Direct replacement for B1141643/B11416 43 models, featuring identical primary electric and construction for worry without integration into existing electrical configurations. Specifications: Component : brass Size: about 4x6.2x9cm/1.57x2.44x3.54inch Primary electric : 208/240V Secondary electric : 24V electric : 40VA Package Includes: 1 x 4021F Converters note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.