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Product Detailed Parameters
- Description：PWR XFMR TOROIDAL 300VA CHAS MT
- Series：VTX-146-xxx-2xx
- Mfr：Vigortronix
- Package：Bulk
- Type：Toroidal
- Voltage - Primary：115V, 230V
- Voltage - Secondary (Full Load)：Parallel 35V, Series 70V
- Current - Output (Max)：4.28A
- Primary Winding(s)：Dual
- Secondary Winding(s)：Dual
- Center Tap：No
- Power - Max：300VA
- Mounting Type：Chassis Mount
- Termination Style：Wire Leads
- Size / Dimension：125.00mm Dia
- Height - Seated (Max)：55.00mm
- Voltage - Isolation：4200Vrms
- Weight：6.1 lbs (2.78 kg)
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Overview
The Vigortronix VTX-146-300-235 is a dual primary toroidal transformer with a 300 VA power rating. It accepts 115V or 230VAC input voltage through its dual primary windings. The unit provides two secondary outputs, each delivering 35VAC at 4.28A. Typical voltage regulation is specified at 6%, and the temperature rise under load is rated at 60°C. This open-style component is UL approved and supplied with a mounting kit for secure installation.
Feature Summary
- Dual primary winding configuration supporting both 115V and 230VAC input voltages
- Open style construction with UL approval for safety compliance
- Dual secondary windings providing independent output channels
Applications
- High-power audio amplifier systems requiring balanced dual rails
- Industrial control equipment needing stable AC power conversion
- Test and measurement instruments utilizing toroidal isolation
Procurement Notes
Verify that the specific application requires a dual primary configuration to match the available input voltage standards. Confirm that the physical dimensions of the open-style core fit within the designated chassis space. Ensure the mounting kit included with the unit is compatible with the intended installation surface. Check that the 300 VA rating meets the peak current demands of the connected load without exceeding the 60°C temperature rise limit.
Selection Notes
Select this model when a high-efficiency toroidal design is required for 300 VA applications. The dual primary feature allows flexibility in regions with varying mains voltages. Consider the open style if external shielding or housing is planned. Verify that the 35VAC output matches the rectification requirements of the downstream circuitry. Ensure the 4.28A per winding capacity supports the total system load.
Part Context
This component belongs to the Vigortronix VTX series of PCB and chassis-mounted transformers. The series focuses on high-quality open-style toroidal designs for robust power conversion. The VTX-146-300-235 represents a mid-range power option within this lineup, balancing size and output capability for demanding electronic equipment.
Replacement Considerations
No public confirmed substitute part numbers are available in the provided documentation. Direct replacement requires matching the 300 VA rating, 2x35VAC output, and dual primary input specifications exactly.
FAQ
Is the VTX-146-300-235 suitable for 115V and 230VAC inputs?
Yes, it features dual primary windings (115+115V) allowing operation at both standard input voltages.
What is the typical voltage regulation for this transformer?
The typical regulation is specified at 6% under normal operating conditions.
