VTX-146-050-125

Overview

The Vigortronix VTX-146-050-125 is a toroidal power transformer with a 50VA rating, designed for chassis mounting. It features a 230V primary winding configured for parallel operation and dual secondary windings that provide 25VAC each. These secondaries support series connection to yield 50VAC at 1A or parallel connection for higher current applications. Constructed with copper windings and steel laminations, the unit incorporates an internal thermal fuse for safety compliance.

Feature Summary

• Toroidal core construction for low radiated magnetic field
• Dual independent secondary windings for flexible voltage configuration
• Integrated thermal fuse for overtemperature protection
• Chassis mount design for secure mechanical installation

Applications

• Audio amplifier power supplies
• Industrial control systems requiring isolated AC power
• Test and measurement equipment
• General purpose mains-powered electronics

Procurement Notes

Verify the specific secondary wiring requirement (series vs. parallel) against the application circuit before ordering. Confirm that the 230V primary input matches the local mains supply voltage. Ensure the chassis mounting holes align with the physical dimensions of the enclosure. Check for UL approval markings if regulatory compliance is required for the final product.

Selection Notes

Select this model when a 50VA capacity is needed with a 25VAC secondary option. The toroidal shape offers space efficiency compared to EI cores. Consider the thermal fuse limitation; it provides protection but may require replacement after fault conditions. Evaluate the need for series versus parallel secondary connections based on the target voltage and current specifications of the load.

Part Context

This component belongs to the Vigortronix VTX series of toroidal transformers, which typically range from 15VA to 1000VA. The series is characterized by low leakage inductance and efficient magnetic coupling. Similar models in the lineup vary primarily in power rating and secondary voltage configurations while maintaining consistent mounting styles and safety features.

Replacement Considerations

Direct substitutes must match the 50VA rating, 230V primary, and dual 25V secondary configuration. Verify physical footprint compatibility for chassis mounting. Ensure equivalent insulation class and thermal protection mechanisms. Cross-reference part numbers from manufacturers offering toroidal transformers with identical electrical parameters.