The General Electric 9T58K0050 is a 0.5 kVA single-phase control transformer designed for machine tool, industrial control, panelboard, and general-purpose applications. Its core and coil are fully encapsulated in epoxy, rendering the unit impervious to moisture and external elements. The welded lamination core ensures quiet operation and enhanced durability.
**Key Features:**
– **Primary Voltage:** 240/480 VAC
– **Secondary Voltage:** 115 VAC
– **Frequency:** 60 Hz
– **Phase:** Single-phase
– **Insulation System:** IS-12 with a 180°C temperature class
– **Temperature Rise:** 80°C
– **Construction:** Copper windings with pressure plate terminals for secure connections
– **Dimensions:** 4.56 inches in width and 3.9 inches in height
– **Frame Size:** 10225
– **Enclosure Type:** Open
**Additional Features:**
– Fully encapsulated coil for moisture resistance
– Terminal board anchored in epoxy for enhanced reliability
– Rugged, high-impact plastic terminal board
– Full head #8 brass screws for quick and secure terminations
– Flexible design accommodating various input or output voltage requirements
– K1-factor rated transformer
– Fingersafe® terminals for added safety
This transformer is UL listed under UL-506, File E2739, and cUL listed, conforming to NEMA ST20 standards. It is ideal for applications where voltage regulation and minimal space are critical.











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