Descripción
ST-2000VA 220V to 110V step down transformer
- Socket on the body, standard selected at the time of order
- Carrying handle for repositioning
- Rotary input voltage selector
- ON/OFF switch with indicator
- Fuse plus MCB protection
- Twelve month warranty from delivery
Funciones
- Converts between the 220–240V and 110–120V mains standards in either direction.
- The primary tap is set to match the local supply, so output stays close to the rated figure.
- Standard selector positions 110V, 120V, 220V and 240V; non-standard windings available.
- Output delivered through the on-board socket, with a separate USB outlet rated at 5A.
- Suited to kitchen equipment, printers, office hardware, fans and imported appliances.
| Modelo | Capacidad | Tamaño del paquete (cm) | Ctd/Paquete |
| STU-100 | 100W | 41.5×27×38 | 12PCS |
| STU-200 | 200W | 41.5×27×38 | 12PCS |
| STU-300 | 300W | 48×29×41 | 12PCS |
| STU-500 | 500W | 48×29×41 | 12PCS |
| STU-750 | 750W | 48×29×41 | 12PCS |
| STU-1000 | 1000W | 49.5×33×21 | 2 PIEZAS |
| STU-1500 | 1500W | 49.5×33×21 | 2 PIEZAS |
| STU-2000 | 2000w | 49.5×33×21 | 2 PIEZAS |
| STU-3000 | 3000 W | 54.5×33×24.5 | 2 PIEZAS |
| STU-4000 | 4000w | 54.5×33×24.5 | 2 PIEZAS |
| STU-5000 | 5000W | 54.5×33×24.5 | 2 PIEZAS |
| STU-7500 | 7500W | 42.5×33×28 | 1PCS |
| STU-10000 | 10000W | 42.5×33×28 | 1PCS |
Especificaciones
Poder: 2000VA, family range 500VA–5000VA
Voltage in: 110V – 120V – 220V – 240VAC, other values to order
Voltage out: 220–240VAC / 110–120VAC
USB output: 5A
Phases: single
Design: step up & down transformer / voltage converter with USB
How it connects: plug
Built-in socket: yes
Conversion efficiency: 80%
Mains frequency: 50/60 Hz
Ambient range: 0°C to +40°C
Protection devices: fuse, MCB protection, circuit breaker
OEM/ODM service: accepted with MOQ
Spare parts: discussion
Warranty: one year
■ How to Choose This Transformer
Two kilovolt-amperes is the rating to pick when several appliances have to be available on one circuit rather than used one at a time. Total the input wattage of everything that could be plugged in simultaneously, then apply the surge factor for the worst load in the group — 1.5 × for resistive and electronic equipment, 2.5–3 × for motors, and up to 5 × for a compressor. This frame supports roughly 1,600W of continuous resistive load, which is two medium appliances at once.
Three points to settle first:
- which appliances will share the transformer, and whether they can ever run together;
- the plug and socket standard used in the destination market;
- where the unit will sit, because a cabinet or cupboard will trap the heat it produces.
■ Running It in a Hospitality Setting
In hotels, guesthouses and staff canteens the transformer usually stays connected while staff plug different devices into it through the day. Under that pattern the requirement is thermal headroom rather than peak capacity, and the ST-2000VA carries about 1,600W continuously. Mark which sockets are fed by the transformer so nobody adds a fourth appliance, and check that the unit itself has ventilated space rather than being tucked inside a service cupboard. Fuses are standard items available locally; there is nothing to calibrate and no consumable parts.
There is very little to maintain: inspect the fuse annually, keep the ventilation slots clear of dust and confirm the input selector has not been moved. Terminations inside the case should be checked for tightness every two years in commercial installations. No lubrication, calibration or consumable parts are involved.
■ 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 | Capacidad | Input / Output Voltage | Aplicación típica | Indicative FOB Price (per pc)* |
|---|---|---|---|---|
| ST/DT-100 | 100 VA | 110V ↔ 220V selectable | Small electronics, chargers, control circuits | US$ 10–15 |
| ST/DT-200 | 200 VA | 110V ↔ 220V selectable | Bench instruments, small appliances | US$ 11–16 |
| ST/DT-300 | 300 VA | 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 | 7500 VA | 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. |
| Plazo de entrega | 10-20 working days for standard models after order confirmation and deposit; 15-25 working days for OEM or custom configurations. |
| Embalaje | 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. |
| Garantía | 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.
PREGUNTAS FRECUENTES
1. ¿Cuál es el rango de capacidad de potencia de la serie STU?
En Serie STU ofrece una gama de potencias de De 100VA a 5KVA, por lo que es adecuado para diversas aplicaciones, desde pequeños dispositivos domésticos hasta equipos industriales de mayor tamaño.
2. ¿Qué tipo de conversión de tensión proporciona este transformador?
La serie STU ofrece paso a paso (de 110 V a 220 V) y reductor (220 V a 110 V), lo que permite su uso en regiones con diferentes normas de tensión o para el funcionamiento de dispositivos que requieren tensiones específicas.
3. ¿Cuáles son las aplicaciones típicas de este transformador?
La serie STU se utiliza habitualmente en:
- Entornos residenciales (por ejemplo, utilizar aparatos importados con requisitos de voltaje diferentes)
- Entornos de oficina (por ejemplo, alimentación de equipos de oficina internacionales)
- Aplicaciones industriales (por ejemplo, maquinaria que requiere conversión de voltaje)
Es ideal para cualquier situación en la que sea necesaria la conversión entre 110 VCA y 220 VCA.
4. ¿Cuáles son las ventajas del diseño del transformador toroidal?
El diseño del transformador toroidal de la serie STU ofrece varias ventajas:
- Mayor eficacia, reduciendo la pérdida de energía durante el funcionamiento.
- Menos interferencias electromagnéticas (EMI), que minimiza el ruido y las interferencias con los componentes electrónicos sensibles.
- Tamaño compacto, lo que facilita su instalación en espacios reducidos.
5. ¿Incluye la serie STU alguna función de protección?
Sí, la serie STU incluye importantes características de protección como:
- Protección contra sobrecargas, que evita los daños causados por una corriente excesiva.
- Protección contra cortocircuitos, que garantiza un funcionamiento seguro al proteger contra fallos eléctricos.
Estas características garantizan un funcionamiento fiable y seguro durante la conversión de tensión.
Solicitar presupuesto
Indíquenos sus especificaciones, la cantidad o el ámbito de aplicación, y le responderemos con un presupuesto a medida.
