Description
■ ST/DT-100W~10000W TRANSFORMATEUR ÉLÉVATEUR ET ABAISSEUR DE TENSION
- Prises en option
- Poignée de transport
- Sélecteur de tension d'entrée
- Interrupteur ON/OFF
- Protection par fusible/MCB
- Garantie : un an à compter de la livraison
■ Fonctions
- This voltage converter can be used in 110volt countries and 220 volt countries.It will convert from 220-240 volt to 110-120 volt and from 110-120volt to 220-240volt.
- Sélection précise de la tension d'entrée en fonction du pays d'utilisation.
- Sélecteur de tension d'entrée : 110V-120V-220V-240 volt (d'autres tensions peuvent être personnalisées)
- Sortie : 110/220-120/240 Volt
- Convient au distributeur d'eau, à l'imprimante, au cuiseur de riz, au ventilateur, au télécopieur, à la machine à air, à l'ordinateur.
| Modèle | Capacité | Taille de l'emballage
(cm) |
Qté/Colis |
| ST/DT-100 | 100w | 41.5×27×38 | 12PCS |
| ST/DT-200 | 200W | 41.5×27×38 | 12PCS |
| ST/DT-300 | 300W | 48×29×41 | 12PCS |
| ST/DT-500 | 500W | 48×29×41 | 12PCS |
| ST/DT-750 | 750W | 48×29×41 | 12PCS |
| ST/DT-1000 | 1000W | 49.5×33×21 | 2PCS |
| ST/DT-1500 | 1500W | 49.5×33×21 | 2PCS |
| ST/DT-2000 | 2000W | 49.5×33×21 | 2PCS |
| ST/DT-3000 | 3000W | 54.5×33×24.5 | 2PCS |
| ST/DT-4000 | 4000W | 54.5×33×24.5 | 2PCS |
| ST/DT-5000 | 5000W | 54.5×33×24.5 | 2PCS |
| ST/DT-7500 | 7500W | 42.5×33×28 | 1PCS |
| ST/DT-10000 | 10000W | 42.5×33×28 | 1PCS |
■ 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.
| Modèle | Capacité | Input / Output Voltage | Application type | 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. |
| Délai d'exécution | 10-20 working days for standard models after order confirmation and deposit; 15-25 working days for OEM or custom configurations. |
| Emballage | 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. |
| Garantie | 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.
■ Related Models in the Wrong Capacity?
If your load falls outside the range you were looking at, these single-capacity pages cover the most frequently requested sizes:
- DT-1000VA step up and step down transformer — the standalone 1KVA unit.
- DT-3000VA step up and step down transformer — for small production lines and test rigs.
- DT-5000VA step up and step down transformer — 5KVA for HVAC and industrial machinery.
- DT-10000VA step up and step down transformer — 10KVA for CNC and whole-panel supply.
- TC/THG Series toroidal transformers (100VA–10KVA) — toroidal core alternative with lower noise and lower leakage.
- STU Series toroidal voltage converters (100VA–3KVA) — compact toroidal build for travel, lab and light industrial loads.
Need a rating that is not listed, or a private-label version? OEM/ODM custom transformer manufacturing covers custom voltage, capacity, socket and enclosure.
■ Get a Quotation for Your Transformer
Send us the input voltage, output voltage, continuous load in VA or W, quantity and destination port. We reply with model confirmation, firm price and lead time within one business day.
Request a Quote → | Contact our export team
Typical applications for the DT/ST series
Where buyers actually put this frame — matched to the markets and duty cycles we ship into.
- Imported 110V equipment on a 220V siteUS, Japanese and Taiwanese machines, lab instruments and appliances run from a 220-240V supply without rewiring the load.
- Export machinery tested in 220V marketsA 110V-rated tool or control cabinet can be powered and validated before it ships to a 110V destination.
- CNC and machine-tool cellsOne unit feeds a whole panel at 3,000-10,000VA where the control, servo and lighting circuits share a single voltage.
- HVAC and refrigeration serviceCompressors and condensing units with high starting current, sized with margin for inrush.
- Retail and food-service sitesPOS systems, printers, rice cookers, water dispensers and display chillers sourced from a different voltage market.
- Site offices in the Gulf and Africa240V site power feeding 110V tools imported by the contractor, with an enclosure that survives a dusty site cabin.
Full specification — DT/ST series step up & step down transformer
Every rating below is what we build to at the factory. Confirm your voltage combination and country standard when you enquire.
| Model range | ST/DT-100, 200, 300, 500, 750, 1,000, 1,500, 2,000, 3,000, 4,000, 5,000, 7,500, 10,000 |
|---|---|
| Capacité nominale | 100VA to 10,000VA |
| Number of phases | Single phase |
| Tension d'entrée | 110-120V / 220-240V, selected by rotary tap switch (other voltages to order) |
| Tension de sortie | 110-120V / 220-240V — the opposite of the selected input |
| Fréquence | 50 / 60 Hz |
| Conversion | Step up and step down, bidirectional on the same winding |
| Efficacité | 80% typical at rated load |
| Protection de l'environnement | Input fuse + MCB, ON/OFF switch with indicator lamp |
| Refroidissement | Natural air convection, no fan |
| Température de fonctionnement | 0°C to +40°C |
| Enceinte | Ventilated metal case with carrying handle; socket outlet optional |
| Conformité | CE, RoHS; produced under ISO 9001 quality system |
| Garantie | 12 months from delivery date |
Wrong capacity? The 13-step range means you can move one model up without changing the footprint for most sizes.
Download & documentation
Send these to your engineering or procurement team before you shortlist a supplier.
- Download the DT/ST series datasheet (PDF)100VA – 10,000VA (13 models) · ratings, protection, applications and ordering data
- Packing & carton quantitiesModel-by-model carton size and pcs per carton for freight costing
- Request the routine test reportPer-unit test sheet, CE / RoHS declaration and ISO 9001 reference, sent as PDF
Get a firm quotation in one working day
Tell us four things and we can quote without a second round of questions:
- Input voltage and output voltage (and the country standard)
- Required capacity in VA or the load list in watts
- Quantity for the first order and the annual volume
- Whether you need OEM branding, a custom socket or a non-standard voltage
Engineering reply, not a sales auto-responder. Samples of 1-2 pcs available for verified buyers.
Talk to the factory directly
- WhatsApp+86 156 5876 3197
- Courrielsales@johsuntech.com
- Phone+86-15658763197
- Temps de réponseWithin 24 hours, Mon-Sat
Related pages
FAQ
What is the price of a DT/ST series step up and step down transformer?
Indicative FOB pricing runs from around US$ 9–16 for the 100VA model up to US$ 178–265 for the 10000VA model, based on 50 pcs per size. Your voltage combination, socket standard and order quantity move the final figure, so confirm against a current quotation.
What documentation is supplied with shipment?
Commercial invoice, packing list and routine test report are standard. CE, RoHS and IEC documentation plus ISO 9001 records can be supplied as PDF for customs clearance or tender submissions.
Can you produce these units under our own brand?
Yes. Custom voltage, socket layout, front panel branding and packaging are available from 500 pcs. Send your specification and we will confirm feasibility, tooling requirements and lead time.
What is the MOQ and lead time?
MOQ is 10 pcs for standard models and 500 pcs for custom OEM configurations. Standard production lead time is 15–25 days after order confirmation and deposit; allow 25–35 days for OEM builds.
Is the DT/ST series bidirectional?
Yes. An input voltage selector switches between 110–120V and 220–240V, so the same unit steps voltage up or down depending on the setting. This is what makes it usable in both 110V and 220V markets.
How do I choose the right capacity?
Add up the continuous load of everything you will connect, then leave headroom for start-up current. For resistive loads, 20–30% headroom is normally enough. For motors, compressors and pumps, induction start current can reach three to six times rated current, so step one size up.
Is there a fuse or circuit breaker inside?
Yes. Units are fitted with fuse or MCB protection on the input side, along with an ON/OFF switch and carrying handle. Sockets are optional and can be specified for your market's plug standard.
Demande de devis
Indiquez-nous vos spécifications, la quantité souhaitée ou le cas d'utilisation, et nous vous proposerons un devis sur mesure.
