General Electric 9T51B2 Dry Transformer QB 0.050 KVA Primary 240 480 Secondary 120 240

The General Electric 9T51B2 is a dry-type transformer in GE's Type QB lineup, rated at 0.050 kVA (50 VA), engineered to step down a 240/480 V primary to a 120/240 V secondary for low-power electrical loads, and it uses an oil-free cooling design appropriate for indoor installations where maintenance and odor-free operation are important. Its primary windings accommodate 240 V and 480 V input sources, while the secondary windings deliver 120 V and 240 V outputs, providing up to 50 VA of usable power from the same core, a configuration commonly used to supply auxiliary circuits, relays, sensors, or instrumentation within compact equipment enclosures or panel-mounted applications. The unit is identified by General Electric part number 9T51B2, Type QB, enabling precise cross-reference in GE catalogs and facilitating replacement in systems that specify this exact model and voltage configuration.