At 25 VA, the XTRTRA0121 is a compact control transformer sized for light control-circuit loads. It takes a 208 VAC primary down to a 24 VAC secondary and carries drawing identification XTR1.
Choose this 208-volt model when the panel is fed from 208 VAC service; its sister part XTRTRA0124 covers 480/460 VAC installations, and the 100 VA units in the family handle heavier control loads. A dead 24-volt circuit with good incoming power — or a transformer that runs hot and smells burnt — means it is time to swap this part.
Sized for the 24 VAC control circuits found in fire pump and pump controller panels on 208 V service. Veteran-owned Cybertronic Controls ships from Hammond, Louisiana — call 985-351-5681 to match the part number and drawing ID on your schematic.