Step down control transformer converts single phase 240V AC to 110/36/24V AC, input/ output voltage can be customized as your requirement. In general, for the 500VA control electric transformer, input rated voltage less than 500V, output rated voltage less than 240V, worked as control power supply for mechanical equipment and general electrical appliance and as power supply for work lighting and signal lamp.
Specifications
Product Name | Single phase control transformer |
Product Model | ATOBK-500VA |
Winding Material | Enameled copper wire or enameled aluminum wire |
Capacity | 500 VA |
Primary Voltage (VAC) | 110, 120, 208, 220, 230, 240, 380, 400, 480, 110/220, 120/240, 240/480...(Customized) |
Secondary Voltage (VAC) | 6, 12, 24, 36, 48, 110/48, 120/24, 208/36, 220/48, 230/36, 240/120, 120/24/12, 110/36/24, 127/36/6, 208/48/36/24...(Customized) |
Frequency | 50 / 60Hz |
Insulation Level | F / H |
Withstand Voltage Test | Primary to secondary 2.5KV/min |
Primary to safety ground 2.5KV/min |
Secondary to safety ground 1.5KV/min |
Insulation Resistance | Primary to secondary 2500V>100 megohm |
Primary to safety ground 2500V>100 megohm |
Secondary to safety ground 1500V>100 megohm |
Induction Withstand Voltage Test | 125Hz/ 800V/min |
Ground Resistance | 25<A80 milliohm |
Cooling Method | Natural or air cooling |
Transformation Ratio | <3% |
Air Carrying Current | <6% |
Impedance Voltage | about 6% |
Total Losses | 0.1 |
Efficiency | 80%~99% |
Operating Temperature | -25℃~40℃ (40℃, 93% RH, 56 days) |
Storage Temperature | -25℃~100℃ (40℃, 93% RH, 56 days) |
Certificate | CE, ISO |
Warranty | 12 months |
Size | Overall size: 132*135*140mm, Hold distance for installation: 100*105mm, Installation hold: 12*7mm |
Weight | 10kg |
Schematic diagram illustration

Control transformer dimension

Overall size (mm) | Hole distance for installation (mm) | Installation hole (mm) K x J |
B | E | D | A | C |
132 | 135 | 140 | 100 | 105 | 12 x 7 |
Tips: ATO 500VA-10kVA control transformers working environment
- Ambient air temperature: -5℃~+40℃, the highest monthly mean temperature should not exceed +30℃.
- Altitude for installing place should not exceed 1000m.
- When the ambient air temperature is +40℃, the relative humidity should not exceed 50%, and it allows higher relative humidity under lower temperature. Max average humidity in the dampest month is 90%, meanwhile the lowest average temperature of this month is +25℃, and condensation on the product surface caused by temperature change should be taken into consideration.
High efficiency single phase 500VA capacity control transformer is applicable for AC 50/60Hz, fully electric isolation between primary side and secondary sides, is designed to step down 240V input voltage to 110/36/24V three sets of output voltages.