Best Power Transformers Deals Online in the UK (25 Deals Found)

Last Updated - 11/01/2026 Sort By:

Best Choice
EFISH

New
EFISH International Power Adapters Multifunctional Portable Power Transformers (Included USB),AC Supply Adapter 100-240V
AC Input Voltage:100-240V ~ 50/60Hz;DC Output Voltage:3V/4.5V/5V/6V/7.5V/9V/12V. Output Current:2.5A(2500mA). Output Pow

£10.99
Zolt

New
Zolt 24W Universal Power Adapter AC DC 3V 4.5V 5V 6V 7.5V 9V 12V Power Supply Transformer Adaptor with 8 DC Plugs for El
Power Spec.: AC input: 100V-240V, 50/60Hz; DC output voltage: 3V 4.5V 5V 6V 7.5V 9V 12V; Output Current: 2A Max.; DC Con

£12.90
New
200W Power Voltage Converter Transformer Step-Down 220V/240V to 110V/120V UK
The maximum power used by the appliance is 200W. Do not use it with high powered appliances such as hair dryers, electri

£9.98
Cantonape

New
500W Voltage Transformer, 220/240 Volts to 110/120V Step Up Step Down Voltage Converter, UK to US & US to UK
HIGH VOLTAGE TRANSFORMER- This power transformer can be used in 110 Volt countries and 220 Volt countries. It will conve

£39.99
New
15VA to 300VA Toroidal Transformer 6V 9V 12V 15V 18V 24V Dual Primary 230V
300VA 60°C 6% 125mm 54mm 2780g. 15VA 26°C 16% 65mm 36mm 330g. Dual secondary winding: 2 x 0-6V, 0-9V, 0-12V, 0-15V, 0-18

£19.79
Best Value
SIGANDG

New
SIGANDG 31V 9W Transformer Plug IP20 Power Supply Adapter with 8 Lighting Modes, Timer and Memory Function for Christmas
Specifications: Input: 220V-240V Frequency:50-60Hz Current:0.2A, Output: 31V Rated power: 9W .Transformer plug adapter c

£9.99
SIGANDG

Used
SIGANDG 31V 9W Transformer Plug IP20 Power Supply Adapter with 8 Lighting Modes, Timer and Memory Function for Christmas
Specifications: Input: 220V-240V Frequency:50-60Hz Current:0.2A, Output: 31V Rated power: 9W .Transformer plug adapter c

£6.99
New
200W Power Voltage Converter Transformer Step-Down 220V/240V to 110V/120V UK
Support max up to 200W output power. Output Power: 200W. Output Power 200W. Ideal for fax machine, fan, air machine, com

£12.59
Outtag

New
12W Universal Power Adapter AC Charger - 12V 9V 7.5V 6V 5V 4.5V 3V 1000mA 1A Multi Voltage DC Power Supply Portable DC P
【COMPATIBILITY】The Universal Power Adapter Charger Includes 8 Dc Connector Tips Which Works For Various Appliances Inclu

£14.49
New
Electronic Neon Light Sign Transformer 12KV 30mA Power Supply Rectifier 4-12m
Output Current: 30mA. Steel Ruler's Positioning Block for Woodworking Carpenter Scriber Gauge Marking. Adopt pull chain

£47.99
SIGANDG

New
SIGANDG 31V 3.6W Transformer Plug IP20 Power Supply Adapter with 8 Lighting Modes, Timer and Memory Function for Christm
Specifications: Input: 220V-240V Frequency:50-60Hz Current:0.12A, Output: 31V Rated power: 3.6W .Transformer plug adapte

£9.99
20% Off
vapourd

New
300W Step Down Power Voltage Converter Transformer (UK Plug) 220v/240v to 110v/120v, Intelligent Efficient Adapter Trave
⚠️【Special Note】The power converter cannot be overloaded. If it is overloaded for a long time, it will directly cause th

£23.99 £29.99
New
16V AC 500mA power supply HET-48-217 transformer 16vac

£15.99
WDKXCN

New
200W Step Down Power Voltage Converter Transformer, Step Down Transformer 220V/240V to 110V/120V, US to UK Voltage Conve
STEP DOWN TRANSFORMER: The voltage converter is a 200W multifunctional and efficient device that can convert the input v

£18.90 £19.90
New
12V/24V 1A-10A 24W-120W Power Supply AC to DC Adapter For LED Strip Light/CCTV
Output Power 24W 48W 72W 120W. Amp 2A 4A 6A 10A. Amp 1A 2A 3A 5A. LED Power Adapter. Standard DC jack 2.5mm 5.5mm plug.

£19.00
Lighting EVER

New
Lepro 12V 2A Power Supply for LED Strip Lights, 100-240V AC to DC 12V Converter Adapter Driver Transformer, 24W UK Plug
High Quality AC/DC Power Adapter - Input: AC100-240V, 50/60Hz; Output: DC12V 2A; UK Plug, Non-waterproof, 1.5M power cor

£8.99
New
31V 6W Power Supply Adapter Transformer For Christmas LED Fairy Light IP44 Plug
31V 6W, Power Up To 800LEDs. NO Fairy Lights NOR Lead Cable Included. 1x LED Light driver. UK Three Pin Type G. Works wi

£5.78
New
CHINT NDK CONTROL CIRCUIT PANEL TRANSFORMER 20-415V OUTPUT 12,24,48,110,230 VOLT
230-415 volt input, 12, 24, 48, 110, 230 volt output. Helpful Staff! NDK-250 : 150 x 120 x 130mm. We will always help yo

£47.00
New
Vigortronix Toroidal Transformer 230V Single Primary 15VA 0-15V
Toroidal transformer. Open style. 15VA. 230V AC primary winding. 2x 0-15V AC secondary windings. 150mm lead length. UL,

£12.44
New
CHINT NDK Control Circuit Panel Transformer 230-415V Output 12,24,48,110,230Volt
Heating & Ventilation. Fire & Security. Need help?. NDK-250: 130 x 120 x 150mm. With over 25 years’ experience working w

£35.37
New
HAGER ST301 ST303 4VA 8VA 8V 12V BELL TRANSFORMER DIN RAIL MOUNTING 2 MODULE
Available in 4VA or 8VA. Din rail mounted, easily fitted in a din rail enclosure or distribution board. We will always h

£17.00
New
1W to 100W Power Transformer 220V TO 6V/9V/12V/15V/18V/24V Output AC Single/Dual
Rated Power: 1W 2W 3W 5W 8W 10W 12W 15W 20W 25W 30W 50W 60W 80W 100W. Dual Output, 15V-0-15V ,Power 15W ,it is ablout 0.

£36.72
New
LED Triac Constant Dimmable Driver Input AC85-265V Output DC5-100V 1-42W DIY LED
Dimming Interface Triac & ELV Triac & ELV Triac & ELV. Dimming Interface Triac & ELV 0-10V & Resistance & PWM. Note: Ens

£7.90
New
RS 6VA Miniature Transformer
Two available.

£15.00
New
Slim LED Driver Power Supply Transformer DC 12V-48V 60W-400W IP67 Waterproof DIY
Output Power 60W 100W 200W 300W 400W. Non-Waterproof 48V. Output Power 100W 200W 300W 400W. Non-Waterproof 12V. Output C

£52.99

25 Power Transformers deals are available from: Amazon, eBay stores, starting from £5.78.
The biggest discount we found is 20% on 300W Step Down Power Voltage Converter Transformer (UK Plug) 220v/240v to 110v/120v, Intelligent Efficient Adapter Travel Power Adapter for WIFI, POS Machine, Power Bank at Amazon.
The lowest price we found is £5.78 while the highest is £52.99.
Prices for the best Power Transformers deals average at £20.51.
Last updated on January 11, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Power Transformers.