Tianjin, China
Business Type:
Business Range:
Auto, Motorcycle Parts & Accessories, Consumer Electronics, Electrical & Electronics, ...
Plant Area:
501~1000 square meters
Management System Certification:
ISO 9001, ISO 9000, ISO 20000
Main Markets:
North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, ...
OEM/ODM Service
Sample Available
MEI Awards

Toroidal Transformer Core, Copper Core Transformer 220V 12V, 240V 12V Transformer Price manufacturer / supplier in China, offering Silicon Steel Toroidal Transformer for Home Appliance, Pms100I/U-96A Single Phase AMP/V Meter Meter, Pcld-830 Digital Power Cable Fault Pin-Pointer and so on.

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Audited Supplier

Silicon Steel Toroidal Transformer for Home Appliance

Get Latest Price
Purchase Qty. / Reference FOB Price
1-99 Pieces US $21.5
100-499 Pieces US $16.2
500-999 Pieces US $14.5
1,000+ Pieces US $14.2
Production Capacity: 50000 PCS
Transport Package: Export Standard Carton or Customize Strong Pallet
Payment Terms: L/C, T/T, D/P, Western Union, Paypal, Money Gram
Application: Power, Electronic, Lighting, Audio
Phase: Single
Core: Toroid Core
Cooling Method: Dry-type Transformer
Winding Type: Auto-transformer
Certification: ISO9001-2000, UL, ISO9001, CCC, CE

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Basic Info

Model NO.: 100va 250va 450va 1300va 2600va 4000va 6000va
Usage: Household Applicance, Houseld Audio, Household Light
Frequency Characteristics: High Frequency
Shape of Core: Ring
Brand: Grewin Toroidal Transformer
Coil Structure: CE UL Toroidal Transformer
Coil Number: Autotransformer, High Flux Density Grain- Oriente
Toroidal Transformer Type: 194va 25va Va 500va 3kVA 6000va Toroidal Transfor
Toroida Step Down Transformer: Low Rise High Efficiency Toroidal Transformer
Leads - Length and Insulation: Secondary Windings Connections
95% Efficiency: Transformer Toroidal Price Design Manufacture
Toroidal Transformer: 500va 1000va 2500va 3000va 6000va
Short-Circuit-Proof Safety: Isolating Transformer
Application1: Home Appliance, Household Audio Device
Test Process1: Iinductive Voltage Test, Temperature Rise Test
Trademark: Grewin Toroidal Transformer
Specification: CE
Origin: China
HS Code: 85043190

Product Description

Silicon Steel Toroidal Transformer for Home Appliance
1.  technical parameters.
Toroidal  Transformer 
PowerInput Voltage(V)Output Voltage(V)Dimension
Weight (kg)
GWB500VA220V (230V)12V145*655.5
GWB1000VA220V (230V)12V175*858.5
GWB2000VA220V (230V)12V210*9014.7
GWB2500VA220V (230V)12V210*10016.7
GWB3000VA220V (230V)12V215*10517.7
GWB3500VA220V (230V)12V230*11521.8
GWB5000VA220V (230V)12V290*11530
GWB7000VA220V (230V)12V330*11531.5

PowerInput Voltage(V)Output Voltage(V)Dimension
Weight (kg)
GWB50VA220V (230V)12V80*380.74
GWB100VA220V (230V)12V95*451.25
GWB200VA220V (230V)12V112*522.05
GWB250VA220V (230V)12V118*543.36
GWB500VA220V (230V)12V140*654.2
GWB1000VA220V (230V)12V170*757.2
GWB1500VA220V (230V)12V180*859.75
GWB2000VA220V (230V)12V185*10512
GWB3000VA220V (230V)12V200*12016.6
GWB5000VA220V (230V)12V230*13524

2.  We have abtained VDE,UL,CE,ISO9000 approval .we guarantee quality is the first.
Test process

1  .No-load test (included no-load voltage,no load current and no load loss)

 2.iInductive voltage test 

 3. Load test (load voltage and temperature rise

 4. Temperature rise test .

 5.Insulated resistance 

 6.Hi-pot test 

 7.Leakage indutance test 

 8.DC resistance test 

 9.Surface inspection.

3.customized audio toroidal transformer and solar energy transformer   Application:

Silicon Steel Toroidal Transformer for Home Appliance


Especially low-hum and low-dispersing construction
Low-level of induction
High-grade design casing possible
Statically shield winding and magnetical shield winding optional .

1). Application:

1. audio equipment 
2. electric control
3. computer
4. solar device
6.high-end and middle-end vedio etc

2).  Advantages:

1.High quality 100% copper core

2.a full range of toroidal transformer

3.Specially sales and technical services:5-10Years

4.With 14 years' producing history in transformer induatry

5.our company have cooperated with many customers around the world and gained good reputation at home and abroad.


The above-mentioned toroidal transformer is frequently-used, we can also manufacture the products by customer design. And the specification is for reference, if has the change further, please take the material object as the standard.

4).GREWIN'S Dimension :
External diameter: 40mm-300mm, height :13mm-130mm, Efficiency: 75-98%

we can design the appropriate products according to customers' requirments such as installation dimension, input and output voltage,power...etc.)


 4.product procedure 

The following picture showed you about all finished toroidal transformer production line and package with export standard carton and strong pallets:

Silicon Steel Toroidal Transformer for Home Appliance

 About us:

 1. Tianjin Grewin Technology Co.,ltd. has always laying great emphasis on our core business philosophy "Quality and Honesty First ". Due to continuous innovative research and development, our products have meet the technical standards and safety standards , which are efficient and environment-friendly. As a professional leading and a main exporter of a wide variety of electronic components in China for many years, we adhere to new products, quality to meet the needs of you and welcome all of you to negotiate

Silicon Steel Toroidal Transformer for Home Appliance
2.Flow chart of trading activities:




Days need


Request for quotation

1 day


Making quotations

1 day


Offer and counter offer

3 days


Sending and receiving samples

3-10 days


Sample confirmation

3 days


Placing a firm order

1 day


Paying and receiving the down payment

1-4 day


Factory production & Quality inspection

15-20 days


Paying and receiving the balance

4 days


Delivery of goods

1 days


Contact Information:                                                        


Tianjin Grewin Technology Co.,Ltd.





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