4 kVA Isolation Transformer, 3 phase, 400V to 208V

5 out of 5 based on 5 reviews | Write a review

$1,424.21

Reasonable price 4kVA isolation transformer, convert 3 phase voltage 400V input to 208V output, provides increased reliability and higher efficiency, make this step up/down transformer ideal for a wide range of applications.

Winding Material *
Primary Voltage (AC) *
Secondary Voltage (AC) *
Transformer Type *
With Movable Wheels *
With Movable Wheels *

SKU: ATO-T-SG4KVA

Qty:

30-day Returns

Delivery date: 10-20 days

4 kVA Isolation Transformer Features:

To step down/up the 3 phase voltage 400V to 208V.
Primary and secondary windings are separated by aluminium/copper shield.
Available in the circuit of AC 50Hz/60Hz.
Better protection, high quality workmanship.

4 kVA Isolation Transformer Specifications

Basics	Model	ATO-SG4KVA
	Phase	3 phase
	Capacity	4 kVA
	Weight of Aluminium Wire Transformer	Open type: 50kg Protected type: 65kg
	Weight of Copper Wire Transformer	Open type: 50kg Protected type: 65kg
Technical Parameters	Primary Voltage	400V (Optional: 120V/ 190V/ 208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 415V/ 480V)
	Secondary Voltage	208V (Optional: 120V/ 190V/ 208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 415V/ 480V)
	Frequency	50Hz / 60 Hz
	Winding Material	Aluminium/Copper wire (Optional)
	Work Efficiency	≥95%
	Insulation Resistance	≥50 MΩ
	Electrical Strength	3000V AC/1 min
	Noise	<35-65dB (1 meter)
	Insulation Grade	H level
	Wiring Mode	Dyn11
	Cooling Mode	Dry type air cooling
	Overload Capacity	Allow more than 1.2 times rated load to work for up to 4 hours
	Enclosure Protection Grade	IP 24
	Certificate	CE, ISO
	Warranty	12 months
Working Environment	Temperature	-15℃~+40℃
	Humidity	≤90%RH, without condensation
	Altitude	<1000m, non corrosive gas and conductive dust

Note:

Transformer can only convert voltage and CANNOT convert frequency.
Transformer CANNOT convert single phase voltage to 3 phase voltage.
Input/output voltage, power rating and whether with shell of all transformers, can be customized according to clients' requirements.

3 Phase Isolation Transformer Schematic Diagram

3 Phase Isolation Transformer Details

4 kVA Isolation Transformer Installation Dimension

Aluminium Wire Transformer Size				Copper Wire Transformer Size
Open type: abc=300155310mm				Open type: abc=300155310mm
Mouting size: de=180125mm				Mouting size: de=180125mm
Protected type: ABC=300440500mm				Protected type: ABC=300440500mm

Tips: Characteristics of 4 kVA 3 phase isolation transformer at the AC power output

Avoid the current distortion of non-linear load to affect the normal operation of AC power and influence to the Grid, it plays a role in purifying the power Grid.
Take sample at the input end of this three phase 400/230V to 208/120V isolation transformer, so that the distortion of the non-linear load current will not affect the accuracy of the sampling and the control signal that can reflect the actual situation can be obtained.
If the load is not balanced, it will not affect the normal operation of the stabilized voltage power supply.

Existing reviews of 4 kVA Isolation Transformer, 3 phase, 400V to 208V

Reverse connection

Can the ATO-T-SG4KVA transformer be reversely connected?

From: Voxte | Date: 13/04/2025