Transformers

Looking to buy a power transformer? RS Hong Kong offers a comprehensive range of high-quality power transformers suitable for various industrial applications. Whether you need a PCB mounting transformer, a toroidal power transformer, a chassis mount transformer, or a main power transformer, we have the perfect solution for your needs. We also stock specialised safety site power transformers and 110v transformers to ensure safety and compliance in your electrical systems.

What is a Power Transformer?

Power transformers or electric power transformers are static electrical devices used to transfer energy between circuits through electromagnetic induction. It is used to increase or decrease the voltage of alternating current (AC) while maintaining the same frequency. Power transformers are essential components in electrical power systems, enabling efficient transmission and distribution of electricity across long distances. They are also widely used in various industrial and commercial applications to provide the appropriate voltage levels for different equipment and devices.

In some cases, the term main power transformer is used to refer to the primary, high-capacity transformer in a system, distinguishing it from auxiliary or smaller transformers. However, both terms generally describe the same fundamental equipment used in electrical power networks.

RS Hong Kong offers a wide variety of power transformers to suit diverse applications and requirements:

  • Audio Power Transformers: Designed for audio applications, these transformers increase or decrease voltage in amplifiers, high-frequency audio circuits, and voice circuits.
  • Autotransformers: Featuring a single coil, autotransformers are compact, cost-effective, and lightweight. They are often used for step-down voltage applications.
  • Chassis Mounting: These transformers are designed for secure mounting to a chassis, offering various sizes and mounting configurations to suit different applications.
  • DIN Rail & Panel Mount: These versatile transformers can be easily mounted on DIN rails or panels, offering convenient installation in industrial control cabinets and systems.
  • LAN Ethernet Power Transformers: Ensuring reliable data transmission and reception, they provide isolation and signal conditions for Ethernet communication.
  • Lighting Transformers: Specifically designed for lighting applications, these transformers control voltage for dimmer switches and other lighting controls.
  • PCB Power Transformers: These compact transformers are designed for mounting on printed circuit boards (PCBs), providing voltage regulation and isolation for electronic circuits.
  • Safety Site Power Transformers: Safety site power transformers isolate the main power supply to minimise the risk of electric shocks and overloading, enhancing safety in industrial and construction sites.
  • Switch Mode Power Supply (SMPS): Primarily used in electronic devices like PCs to convert AC power to DC power or to regulate DC voltage levels efficiently.
  • Telecom Power Transformers: Provide voltage isolation and transformation for telecommunications equipment and systems, ensuring reliable communication.
  • Toroidal: These transformers feature a distinctive ring or doughnut shape, offering high efficiency and low electromagnetic interference.

Wall Mount Power Transformers: Designed for secure wall mounting, these transformers are suitable for hazardous locations or harsh industrial environments where space is limited.

Power Transformer Applications

Power electric transformers are essential components in various industries and applications:

  • Power Generation and Distribution: In power plants and substations, transformers are crucial for adjusting voltage levels, enabling efficient long-distance transmission and safe distribution of electricity to consumers.
  • Industrial Automation: Industrial machinery, control systems, and automation equipment rely on power transformers to provide the precise voltage levels required for optimal and safe operation.
  • Renewable Energy: Solar and wind power systems utilise power transformers to convert and regulate the variable voltage output from renewable sources, ensuring compatibility with the power grid and stable power delivery.
  • Transportation: Power transformers play a vital role in railway electrification, powering trains and ensuring efficient operation.
  • Construction: Transformers ensure a reliable power supply for construction equipment and lighting, enabling efficient and safe operations on construction sites.
  • **Commercial Buildings: **Used in commercial buildings, power transformers provide appropriate voltage levels for lighting, HVAC systems, and other electrical equipment.
  • Residential Applications: Smaller power transformers are used in residential settings for appliances, doorbells, and other household electrical needs.
  • Electronics: Power transformers are crucial components in electronic devices, providing voltage regulation and isolation for sensitive circuits.

How to Choose the Right Power Transformer

Choosing the right power transformer requires careful consideration of several factors, including the required voltage and current ratings, the type of load, the operating frequency, the mounting style, and the environmental conditions. It's essential to select a transformer that meets the specific needs of your application to ensure optimal performance, efficiency, and safety.

RS Hong Kong offers a wide selection of power electric transformers ensuring you can find the perfect transformer to meet your requirements. Our commitment to quality and reliability means you can trust RS to provide power transformers that deliver consistent performance and meet the highest industry standards.

How to order a Power Transformer from RS Hong Kong?

Ordering the right power transformer for your needs is easy with RS Hong Kong. As a trusted supplier of power transformers, we carry a wide selection of high-quality products from top brands like Block, EPCOS, and our own RS PRO.

Our user-friendly website allows you to easily filter and sort transformers by various parameters, such as voltage, current, power rating, mounting type, and more, ensuring you can quickly find the perfect transformer for your application.

In addition to power electric transformers, we offer other electrical components, parts, and tools such as electrical switches, crimp connectorsand more. Find all the hardware products you need at our one-stop online shop!

Simply select the desired transformer, add it to your cart, and proceed to checkout for a secure and efficient online ordering experience.

How Delivery Works at RS Hong Kong

RS Hong Kong offers fast and reliable delivery services to ensure you receive your power transformers promptly. For detailed information about our delivery options, estimated delivery times, and shipping fees, please visit our Delivery page.

Audio Transformers
Audio Transformers
Autotransformers
Autotransformers
Chassis Mounting Transformers
Chassis Mounting Transformers
DIN Rail Transformers
DIN Rail Transformers
LAN Ethernet Transformers
LAN Ethernet Transformers
PCB Transformers
PCB Transformers
Power Conditioners
Power Conditioners
Pulse Transformers
Pulse Transformers
SMPS Transformers
SMPS Transformers
Site Transformers
Site Transformers
Toroidal Transformers
Toroidal Transformers
Transformer Accessories
Transformer Accessories
Transformer Cores
Transformer Cores
Variacs
Variacs

3069 Products showing for Transformers

1 of 154
OEP Surface Mount Pulse Transformer 1:1:1 Turns Ratio, 3mH Prim. Inductance, 0.65Ω Prim. Resistance
  • RS Stock No. 667-5940
  • Mfr. Part No. PT6SM
Each
HK$36.30(exc. GST)
3 Output 15 → 30W Flyback SMPS Transformer, 85 → 265V ac, 3.3 → 7 V ac, 8 → 17 V ac
  • RS Stock No. 418-5543
  • Mfr. Part No. 74030
Each
HK$81.00(exc. GST)
Block 15V ac 2 Output Through Hole PCB Transformer, 0.35VA
  • RS Stock No. 310-1213
  • Mfr. Part No. VB 0.35/2/15
Each
HK$56.60(exc. GST)
Nuvotem Talema 115 V ac, 230 V ac, 2 x 12V ac Toroidal Transformer, 7VA 2 Output
  • RS Stock No. 223-9200
  • Mfr. Part No. 70032K
Each
HK$193.60(exc. GST)
RS PRO 160VA DIN Rail Transformer, IEC 61558-2-6, 230 → 400V ac Primary, 12V ac Secondary
  • RS Stock No. 123-4142
Each
HK$1,323.64(exc. GST)
RS PRO 1 Phase 720VA Variac, 1 Output, 240V, 3A
  • RS Stock No. 890-2777
Each
HK$2,430.80(exc. GST)
Sollatek Voltage Stabiliser 230V ac 16A Over Voltage and Under Voltage, 3680VA
  • RS Stock No. 548-9420
  • Mfr. Part No. 98220060
Each
HK$4,404.20(exc. GST)
RS PRO, Neoprene Disc for use with Toroidal Transformer
  • RS Stock No. 671-9211
Each (In a Pack of 10)
HK$3.36(exc. GST)
EPCOS, Vertical Coil Former for use with Transformer
  • RS Stock No. 246-9769
  • Mfr. Part No. B66359B1013T001
Each
HK$15.10(exc. GST)
Siemens 0.315kVA DIN Rail Transformer, 230V ac Primary, 24V Secondary
  • RS Stock No. 480-4913
  • Mfr. Part No. 4AM4342-4TN00-0EA0
Each
HK$3,796.80(exc. GST)
OEP Through Hole Pulse Transformer 1:1 Turns Ratio, 3mH Prim. Inductance, 1.1Ω Prim. Resistance
  • RS Stock No. 196-375
  • Mfr. Part No. PT6
Each
HK$44.80(exc. GST)
RS PRO 2 x 115V ac, 2 x 12V Toroidal Transformer, 15VA
  • RS Stock No. 124-3869
Each
HK$212.30(exc. GST)
Through Hole Audio Transformer
  • RS Stock No. 106-8577
  • Mfr. Part No. DA103C
Each (In a Tube of 50)
HK$12.662(exc. GST)
ABB 10W Bell Transformer, CE, 230V Primary, 12 → 24V ac Secondary
  • RS Stock No. 179-2212
  • Mfr. Part No. 2CSM228725R0802 TM10/24
Each
HK$303.50(exc. GST)
RS PRO 50VA 2 Output Chassis Mounting Transformer, 15V ac, IEC 61558-2-6
  • RS Stock No. 504-252
Each
HK$322.20(exc. GST)
Through Hole Audio Transformer 600Ω 2mW
  • RS Stock No. 851-3686
  • Mfr. Part No. Z1604
Each
HK$60.90(exc. GST)
1 Output 2.5W SMPS Transformer, 85 → 265 V ac, 85 → 370 V dc, 12V dc
  • RS Stock No. 792-4350
  • Mfr. Part No. 47124
Each
HK$116.60(exc. GST)
RS PRO 2 x 115V ac, 2 x 15V Toroidal Transformer, 25VA
  • RS Stock No. 124-3876
Each
HK$202.50(exc. GST)
Legrand 160VA DIN Rail Transformer, 230V ac, 400V ac Primary, 115V ac Secondary
  • RS Stock No. 535-7812
  • Mfr. Part No. 0 442 64
Each
HK$1,025.31(exc. GST)
Myrra 24V ac 2 Output Through Hole PCB Transformer, 60VA
  • RS Stock No. 173-9579
  • Mfr. Part No. 45078
Each
HK$438.31(exc. GST)
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