100VA–10KVA Step Up & Down Toroidal Transformer 110V–220V AC Voltage Converter

Description

THG toroidal step up down transformer 100VA–10KVA 110V–220V AC Voltage Converter

• One or two output sockets, depending on the model
• A double power core wound in toroidal form
• Primary fuse protection
• Interrupteur ON/OFF
• Input voltage selector available as an option

Fonctions

The THG range exists for the two common mismatch situations: an appliance rated AC 110V or 220V being used in an area supplied at AC 220/240V, or an appliance rated AC 220/240V being used where the supply is AC 110/120V. Any electronic or electrical equipment can be connected to the output socket, provided the total load stays inside the rated wattage of the model chosen.

■ How to Choose This Transformer

Because the THG platform runs from 100VA to 10KVA on one design, the rating is the only real decision. Total the input wattage of the equipment that will be connected, apply 1.5 × for heating and electronic loads, 2.5–3 × for anything with an induction motor and up to 5 × for a compressor, and choose the frame that covers the result. Household and office loads sit in the 100VA to 1000VA band; kitchen and laundry equipment pushes into 1500VA to 3000VA; from 4000VA upward the unit is normally hardwired and feeds a circuit rather than a single appliance.

Three points to settle before ordering:

• the required conversion direction and the mains voltage at the point of use;
• the socket standard for the destination market, and whether one or two sockets are needed;
• whether an input voltage selector should be fitted, since it is an option rather than standard on this range.

■ Range and Export Packing

Models up to 1000VA ship eight or six to a carton, which keeps freight cost per unit low on wholesale orders. From 1500VA the carton holds two units, and the 7500VA and 10000VA models ship singly. All units are packed with foam inserts and function-tested before packing, and because the whole range shares one toroidal platform, buyers who standardise on THG can keep a single set of wiring and mounting practices from the smallest to the largest size.

■ 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.

* 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.

1. 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.
2. Pure resistive / electronic loads: choose a transformer with capacity ≥ 1.5× the equipment rated power.
3. Inductive loads such as motors and compressors: choose a transformer with capacity ≥ 2.5–3× the equipment rated power.
4. 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

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

What is the difference between the THG and TC-D models?

They are built on the same toroidal platform and cover the same power range. THG is the standard market series; TC-D is the smaller-frame variant used where a more compact enclosure is preferred. Both are listed on this site.

Why is a toroidal core used instead of a laminated one?

Winding the core as a toroid removes the air gap that produces most of the stray field in a conventional laminated transformer, so the unit runs more quietly and can sit close to signal wiring without shielding.

Is the output isolated from the mains?

Yes. The THG is a double-wound isolation transformer, so primary and secondary are galvanically separated rather than sharing a common winding.

Can the transformer be supplied with two output sockets?

Yes — one or two sockets are available depending on model, and the socket standard can be matched to your market at the time of order.

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