Square D 9070TF50D1 Control Type Transformer, 240/480-Volt to 120VAC, 50vA : Industrial & Scientific - Amazon.com
Micron B050PU7JK Control Transformer, 50VA, 1Ph, 240 X 480Pri - 24Sec, Open Type: Amazon.com: Industrial & Scientific
24VAC 50VA Wall Transformer with PTC Fuse Compatible with All Versions of Doorbell,Nest, Ecobee, Sensi and Honeywell Thermostat,Water Solftener,Screw Terminal Output - - Amazon.com
Honeywell AT150F1022 - Transformer, Plate or Panel Mounted 120/208/240 Vac, 24V AC @ 50 VA - - Amazon.com