Descrição
DT-1500VA step up and down voltage converter transformer
- Socket on the body — single, double or market-specific layout
- Built-in carrying handle
- Input voltage selected by rotary switch
- ON/OFF switch with indicator
- Fuse plus MCB protection
- One year warranty from the delivery date
Funções
- Operates in 110V countries and 220V countries alike, stepping 220–240V down to 110–120V or the reverse.
- Input tap is chosen to match the local supply, which keeps the output close to nominal.
- Selector positions: 110V, 120V, 220V and 240V; non-standard windings available.
- Output: 110V/220V or 120V/240V, depending on the direction selected.
- Intended for imported appliances, printing equipment, rice cookers, fans and computer hardware.

| Modelo | Capacidade | Tamanho da embalagem (cm) | Quantidade/Pacote |
| ST/DT-100 | 100w | 41.5×27×38 | 12 PEÇAS |
| ST/DT-200 | 200W | 41.5×27×38 | 12 PEÇAS |
| ST/DT-300 | 300W | 48×29×41 | 12 PEÇAS |
| ST/DT-500 | 500W | 48×29×41 | 12 PEÇAS |
| ST/DT-750 | 750W | 48×29×41 | 12 PEÇAS |
| ST/DT-1000 | 1000W | 49.5×33×21 | 2 PEÇAS |
| ST/DT-1500 | 1500W | 49.5×33×21 | 2 PEÇAS |
| ST/DT-2000 | 2000W | 49.5×33×21 | 2 PEÇAS |
| ST/DT-3000 | 3000W | 54.5×33×24.5 | 2 PEÇAS |
| ST/DT-4000 | 4000W | 54.5×33×24.5 | 2 PEÇAS |
| ST/DT-5000 | 5000W | 54.5×33×24.5 | 2 PEÇAS |
| ST/DT-7500 | 7500W | 42.5×33×28 | 1PCS |
| ST/DT-10000 | 1000oW | 42.5×33×28 | 1PCS |
Especificações
Capacity: 1500VA, with the family spanning 500VA to 10,000VA
Entrada: 110–120VAC / 220–240VAC, selected on the front panel; special voltages to order
Saída: 220–240VAC / 110–120VAC, special voltages to order
Number of phases: one
Equipment type: isolating step up & down transformer, also described as a voltage converter
How it connects: flexible cord with plug, or fixed terminals
Socket provided: yes, on the enclosure
Eficiência: 80%
Mains frequency: 50/60Hz
Ambient range: 0°C to +40°C
Electrical protection: fuse, MCB and circuit breaker
OEM / ODM: accepted against a minimum order quantity
Spare parts: available by discussion
Warranty period: 12 months
■ How to Choose This Transformer
Start with the equipment, not the transformer. Note the input wattage printed on each rating plate — not the output figure in the brochure — then add up everything that can be running simultaneously. Heating elements and electronic loads need a factor of 1.5, induction motors and pumps need 2.5 to 3, and refrigeration compressors can pull up to five times their running current. A 1500VA frame leaves roughly 1,200W of continuous capacity once the 80% conversion efficiency is taken into account.
Three things to settle before ordering:
- the actual mains voltage at the installation point, since a 230V circuit can read anywhere from 220V to 245V;
- the plug and socket pattern required in your market;
- whether the unit will be moved around or fixed in place, which decides the input connection type.
■ Set-Up Notes for the 1.5KVA Frame
Stand the unit on a hard surface with 10cm of free air around the vents and leave it outside closed cabinets — the laminated core dissipates heat continuously even at part load. Set the selector to the measured supply voltage, energise with nothing connected and check the output socket with a meter before adding loads. A warm case after an hour is normal; a case you cannot hold is a sign of overload or restricted airflow.
Where several appliances share the transformer, total their input wattage and keep the sum below 1,200W. Two devices of 500–600W can run together; a 1,000W appliance should have the unit to itself.
Weight and heat both rise with capacity, so this frame is normally placed on a lower shelf rather than a high one. Keep the case level: a core mounted at an angle transmits more mechanical hum into the surface below it.
■ Pricing, Ordering & Quality Assurance
Step Up & Step Down Transformer Price Range (100VA–10KVA)
Pricing for the DT/ST series depends on capacity, the input/output voltage combination you need, socket type, and whether a voltage selector or MCB protection is fitted. The table below gives indicative FOB levels so you can budget before requesting a firm quotation.
| Modelo | Capacidade | Input / Output Voltage | Aplicação típica | Indicative FOB Price (per pc)* |
|---|---|---|---|---|
| ST/DT-100 | 100VA | 110V ↔ 220V selectable | Small electronics, chargers, control circuits | US$ 10–15 |
| ST/DT-200 | 200VA | 110V ↔ 220V selectable | Bench instruments, small appliances | US$ 11–16 |
| ST/DT-300 | 300VA | 110V ↔ 220V selectable | Audio equipment, laboratory benches | US$ 12-18 |
| ST/DT-500 | 500VA | 110V ↔ 220V selectable | Refrigeration units, printers, POS systems | US$ 12-20 |
| ST/DT-1000 | 1000VA | 110V ↔ 220V selectable | Power tools, kitchen equipment, single machines | US$ 21-30 |
| ST/DT-1500 | 1500VA | 110V ↔ 220V selectable | Motor-driven machines, imported appliances | US$ 23-35 |
| ST/DT-2000 | 2000VA | 110V ↔ 220V selectable | Compressors, welders, multi-outlet benches | US$ 25-37 |
| ST/DT-3000 | 3000VA | 110V ↔ 220V selectable | Small production lines, test rigs | US$ 33-43 |
| ST/DT-5000 | 5000VA | 110V ↔ 220V selectable | HVAC, industrial machinery | US$ 52-62 |
| ST/DT-7500 | 7500VA | 110V ↔ 220V selectable | Heavy workshop loads | US$ 75-87 |
| ST/DT-10000 | 10000VA | 110V ↔ 220V selectable | CNC equipment, whole-panel supply | US$ 85-112 |
* Indicative FOB Ningbo/Shanghai, standard configuration, based on 50 pcs per size. Not a formal offer — final price depends on your voltage combination, socket standard, enclosure and order quantity.
- The efficiency of the DT/ST series is 80%. For equipment with motors or compressors, the starting current will multiply — always reserve adequate power margin.
- Pure resistive / electronic loads: choose a transformer with capacity ≥ 1.5× the equipment rated power.
- Inductive loads such as motors and compressors: choose a transformer with capacity ≥ 2.5–3× the equipment rated power.
- This table is for reference only. Confirm the final solution according to the rated power and duty cycle shown on your equipment nameplate.
MOQ, Lead Time & Ordering Information
| Minimum Order Quantity (MOQ) | 1 PC for standard DT models. Smaller trial orders can be discussed for first-time buyers. |
|---|---|
| Custom / OEM orders | 50 PCS for custom voltage, custom socket layout, branded front panel or non-standard capacity. |
| Sample | 1-2 pcs sample available for verified buyers. Sample lead time 3-5 working days. |
| Prazo de entrega | 10-20 working days for standard models after order confirmation and deposit; 15-25 working days for OEM or custom configurations. |
| Embalagem | Export carton with foam. 1/2/6 pcs per carton – see the packing table above. |
| Payment terms | 100% TT IN ADVANCE FOR RETAIL/SAMPLE; 30% TT IN ADVANCE AS DEPOSIT, THE BALANCE BEFORE SHIPMENT. |
| Shipping | FOB Ningbo. CIF and door-to-door available on request. |
| Garantia | 12 MONTHS FROM DELIVERY DATE |
Certifications & Quality Assurance
DT/ST series step up and step down transformers are produced under our ISO 9001 quality management system, and every unit is 100% function-tested before packing.
CE Certified | RoHS Compliant | IEC Tested | ISO 9001 | EMC Tested | 12-Month Warranty
Certificates and routine test reports can be issued as PDF on request, for customs clearance, tender submissions or distributor onboarding.
■ FAQ
Is the DT-1500VA the best step down transformer 220V to 110V for a single appliance?
For a single appliance drawing under 1,200W it is a strong match, and it is frequently chosen as the best step down transformer 220V to 110V in this size bracket because it is a genuine double-wound isolation unit rather than an autotransformer or a switch-mode converter. Output waveform follows the mains closely, so timers keep time, motors run cooler and audio equipment stays quiet.
Can I purchase a DT-1500VA step up and down voltage converter transformer as an ODM project?
Yes. A DT-1500VA voltage converter transformers ordered as an ODM build can be supplied with your own primary and secondary voltages, socket standard, protection arrangement, enclosure finish, front-panel artwork and carton printing. Minimum order quantity is fifty pieces per specification, and a pre-production sample is provided for sign-off before the batch is released.
What is the cost of a step down transformer of this rating?
The cost of a step down transformer depends mainly on the copper content of the winding, which scales with capacity, and then on the voltage combination, socket type and whether a voltage selector or MCB is fitted. The price table on this page gives indicative FOB levels for budgeting. A firm quotation follows once you confirm the direction of conversion, the socket standard and the order quantity.
Will it run a 1,200W appliance safely?
Only as the sole load, and only if the appliance’s input rating — not its marketing wattage — is 1,200W or less. With 80% conversion efficiency a 1500VA frame leaves roughly 1,200W of continuous capacity, so a device sitting exactly on that figure leaves no headroom. Appliances within about 200W of the ceiling are better served by the 2000VA frame.
How do I confirm the correct input tap?
Measure the supply rather than assuming it: a nominal 230V circuit can read anywhere between 220V and 245V. Set the selector to the nearest available position while the unit is de-energised, then verify the output at the socket before connecting anything. Moving the selector under load is not recommended on any model in this range.
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