Description:

The Square D 500SV43B Transformer is a dry‑type control transformer used to step down or isolate voltage for control circuits in industrial and commercial electrical systems. Installed in control panels, switchboards, and power distribution systems where stable lower‑voltage supply is required for control devices and circuitry. Electricians and maintenance teams use this transformer for replacement, retrofit, and system upgrades to ensure dependable control‑voltage power and isolation.

Applications:

The SQUARE D 500SV43B transformer is used to provide lower control voltages for PLCs, relays, contactors, indicators, and other control devices from higher distribution voltages. It is deployed in motor control centers, automation panels, lighting control, HVAC systems, and machine control networks where reliable control‑circuit power is essential. With rugged construction, it supports stable operation of control and auxiliary devices.

Technical Specifications:

• Manufacturer: Schneider Electric / Square D
• Model / Part Number: 500SV43B
• Product Type: Dry‑Type Control Transformer
• Input (Primary) Voltage: Typically high voltage range (e.g., 480 V or 600 V AC, model dependent)
• Output (Secondary) Voltage: Lower control voltage (e.g., 120 V AC or 24 V AC depending on variant)
• Power Rating: Control transformer rating (VA rated, model dependent)
• Phase: Single‑phase
• Mounting: Panel or enclosure mount
• Termination: Line and load terminals for secure connections
• Insulation: Dry‑type industrial insulation design
• Standards: UL listed for control transformer use
• Application: Control circuit voltage step‑down and isolation

Common Replacements:

• Square D 500SV50B 
• Schneider Electric 50 VA Control Transformer
• Hammond 50 VA Panel‑Mount Transformer