Schneider Electric Square D 500SV43B Transformer

The Schneider Electric Square D 500SV43B dry-type control transformer delivers isolated, lower-voltage power for control circuits in industrial and commercial electrical systems. Designed for installation in control panels, switchboards, and power distribution gear, it provides a stable source of voltage for PLCs, relays, contactors, indicators, and other control devices drawn from higher distribution voltages. This single-phase transformer is built for panel or enclosure mounting with line and load terminations and uses dry-type industrial insulation, UL listed for control transformer use, and rugged construction to support reliable operation of control and auxiliary devices. Technical specs include input voltage in the high-voltage range (e.g., 480 V or 600 V AC, model dependent) and output voltage of 120 V AC or 24 V AC depending on variant, with a VA-rated power—model dependent. Applications span motor control centers, automation panels, lighting control, HVAC systems, and machine control networks where dependable control-circuit power is essential. Common replacements include Square D 500SV50B, Schneider Electric 50 VA Control Transformer, and Hammond 50 VA Panel-Mount Transformer.