220V to 110V Toroidal Transformer, 4000VA/5000VA

SKU: PH-TT-4000

$1,359.99

● Designed for 220V-to-110V single-phase applications, with 4000VA and 5000VA capacity options. ● Toroidal copper-wound construction supports stable power delivery and no-load loss below 7.15W. ● Selectable input/output voltages and optional 4-wire dual outputs suit different installation requirements. ● Natural air cooling, DC 2500V dielectric strength, CE, RoHS and ISO certification, plus a 12-month warranty.

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Primary Voltage (AC) *
Secondary Voltage (AC) *

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Overview
Specs
Application
FAQ
Reviews

Overview

Engineered for reliable voltage transformation, this toroidal transformer operates at 50Hz/60Hz and combines a low-loss toroidal core with insulated copper windings for efficient and quiet performance. It offers 90%–96% efficiency, no-load loss below 1.08W, dielectric strength up to DC2500V, and insulation resistance of ≥500MΩ, making it suitable for audio equipment, industrial controls, medical devices, and custom power systems.

Feature

Efficient Power Conversion: The winding fits the core precisely to improve efficiency and reduce energy loss.
Built for Long-Term Use: High-quality materials and advanced workmanship support a long service life of up to 30 years.
Low Operating Noise: A seamless core and balanced winding design help ensure quieter performance.
Reduced Radiation: The toroidal core design helps lower electromagnetic radiation during operation.
Stable Thermal Performance: Even with 120% overload, the temperature rise remains below 70℃.

Details

Durable PET Film Insulation: PET polyester film delivers consistent insulation strength for safe and stable performance.
Safety-Focused Design: A protective structure helps enhance reliability and operational safety.
High-Quality Copper Winding: Insulated copper magnet wire supports efficient power transfer and long service life.
Efficient Magnetic Core: A smooth, tight-gap core design helps achieve low noise, low loss, and high efficiency.

Toroidal Transformer Accessories

Toroidal transformer accessories

Toroidal Transformer Internal Structure

Toroidal transformer internal structure

Wiring Instructions

Without Baseplate Installation

A Pedestal Installation

Specs

Phase	Single phase
Power	4000VA (4000W), 5000VA (5000W)
Primary Voltage	110V AC (Optional: 110V, 120V, 220V, 230V, 240V)
Secondary Voltage	220V (Optional: 12V, 24V, 48V, 110V, 220V, 2x6V, 2x12V, 2x15V, 2x24V, 2x30V, 2x35V, 2x40V, 2x50V, can be customized)
Secondary Current	18.18A each winding(4000VA), 208.33A each winding(5000VA)
No. of Inputs	1 input
No. of Outputs	1 output (4-wire 2 outputs are available)
No. of Outputs	Note: For the transformer with 2 outputs 4-wire, each output provides the same voltage and current level, the sum of 2 output power capacities is equal to the total capacity.
Frequency	50Hz/60Hz
Winding Material	Copper Wire
Coil Structure	Toroidal
Efficiency	90%-96%
No-load Loss	<7.04W(4000VA), <7.15W(5000VA)
Voltage Strength	DC2500V
Insulation Impedance	≥500MΩ
Cooling Method	Natural air cooling
Temperature	+40℃
Certification	CE, RoHS, ISO
Warranty	12 months
External Diameter	240mm(4000VA), 250mm(5000VA)
Height	95mm(4000VA), 100mm(5000VA)
Pedestal	240240mm(4000VA), 250250mm(5000VA)
Mounting Hole Distance	240240mm(4000VA), 250250mm(5000VA)
Weight	31kg(4000VA), 36kg(5000VA)
Package Included	1Toroidal transformer + 1Accesorries sets (Nut, Shim, Metal disk, Rubber gasket, Pedestal, Screw)

Application

PLC Support Circuits

DIY Electronic Projects

Electronic Testing Instruments

Monitoring Equipment

FAQ

Q1: Are toroidal transformers safer or cooler-running than EI transformers?

They often run cooler at the same load because of higher efficiency and lower losses, but “safer” depends on insulation, shielding, thermal protection, and certification, not just core shape.

Q2: What core materials are used in toroidal transformers?

Most low-frequency power toroids use grain-oriented silicon steel. At higher frequencies, ferrite or powder-core materials may be used in toroidal form.

Q3: When should I choose a toroidal transformer instead of a laminated transformer?

Choose a toroidal transformer when you want compact size, high efficiency, low stray field, low noise, or a lower profile. Choose a laminated EI type when lower cost, easier mounting, or better tolerance of certain line conditions matters more.

1 review(s)

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From: Kevin | Date: 7/28/2026 5:42 AM

Heavy-Duty Power, Dead Quiet – My Audio System Has Never Sounded Better

I needed a serious transformer to step down 220V to 110V for a high-end audio rig I'm building, and this thing is overkill in the best way possible. The first thing you notice is the silence – absolutely no mechanical hum or buzz bleeding into the signal, which was a huge problem with my old EI-core unit. The toroidal design keeps everything running cool and clean, even when I'm pushing it hard. I went with the 5000VA version for plenty of headroom, and it doesn't even break a sweat. The dual 4-wire outputs give me some nice wiring flexibility, and the build quality is clearly top-notch – you can tell this thing was made to last. Installation was straightforward, and it's been running flawlessly for weeks. If you're powering sensitive gear or just want something that's built like a tank and whisper-quiet, this transformer is worth every penny. No complaints at all.