Power Supplies & Transformers

RS offers a wide selection of power supply units (PSUs) for use in various domestic and industrial applications. Our range includes AC-DC power supply adapters and desktop computer power supply suitable for domestic applications, as well as bench power supplies, DIN Rail and panel mount power supplies, and switch mode PSUs.

What is a power supply?

Power supplies are a crucial aspect of any electrical equipment, providing reliable power to machinery, computers or other technology devices. A power supply changes a source electric current, such as a mains plug, to the correct voltage, frequency and current needed to operate the equipment safely.

How do power supplies work?

A power supply is used to reduce mains or three phase electricity, often at 240 Vac or 440 Vac down to a voltage that is usable, such as 12 Vdc. The PSU also converts the current rating, in the form of AMPS, to a level that is safe for the device to be powered.

What is the difference between types of power supply?

There are three main types of power supply: unregulated, linear and switch mode.

An unregulated power supply is the most basic type, they typically output a lot of ripple voltage (i.e. rapidly-varying instability) on the DC output power. If the input voltage varies, the output voltage will vary by a proportional amount. The advantage of an unregulated supply is that it's affordable, simple, and efficient.

A linear power supply is similar in construction to an unregulated power supply, with the advantage of an added transistor circuit to regulate the output to a fixed voltage.

A switch mode power supply, also known as switching power supply, works by stabilising the mains electricity voltage in order to produce a clean, efficient and stable output voltage.

What is power supply efficiency?

Power supply efficiency is known as the amount of power actually provided to the internal circuitry, divided by the amount of power drawn from the mains supply. If a PSU is 50% efficient and is required to provide 50 Watts of power, 100 Watts will be drawn from the main supply. The extra 50 W is lost as heat. A 90% efficient PSU would draw 56 W in the same circumstances.

What industries can power supplies be used in?

Here are some common industries and environments power supplies can be used in:

  • Machine and panel building
  • Maintenance
  • Marine & offshore
  • Military & defence
  • Automotive
  • Electrical wiring
  • Domestic
  • Food and beverage
  • Manufacturing
Power Supplies
Power Supplies

Renewable Energy
Renewable Energy

Transformers
Transformers

Voltage Converters
Voltage Converters

27405 Products showing for Power Supplies & Transformers

1370 of 999+
In Stock
TRACOPOWER Switching Power Supply, TPP 30-105A-J 5V dc, 6A, 30 W, Input 85V ac to 264V ac
  • RS Stock No. 157-8377
  • Mfr. Part No. TPP 30-105A-J
Subtotal (1 unit)
PHP2,726.36(exc. VAT)
PHP2,726.36/unit
Limited stock
XP Power IZ DC/DC Converter, 3.3V dc/ 700 mA, 18V dc Input, 9V Input 3 W, Through Hole, 100 °C Max Temp -40 °C Min Temp,
  • RS Stock No. 122-8644P
  • Mfr. Part No. IZ1203SA
Subtotal 1 unit (supplied in a tube)
PHP860.69(exc. VAT)
PHP860.69/unit
Stocked by manufacturer
Phoenix Contact 230V ac Input Panel Uninterruptible power supply, 2500 VA, QUINT-HP-UPS 2.25 kW QUINT AC UPS
  • RS Stock No. 517-780
  • Mfr. Part No. 1136815
Subtotal (1 unit)
PHP203,646.84(exc. VAT)
PHP203,646.84/unit
Temporarily out of stock
Wurth Elektronik 17 V 1 Output Surface PCB Transformer, ASNZS668.1 and J6681, UL6681CSA6681, IEC6180051, EN6681, REACH,
  • RS Stock No. 182-8974P
  • Mfr. Part No. 750342879
Subtotal 1 unit (supplied on a continuous strip)
PHP230.08(exc. VAT)
PHP230.08/unit
Stocked by manufacturer
APC 230V ac Input Wall UPS, 1000 VA, BV1000I-GR 600 W
  • RS Stock No. 788-332
  • Mfr. Part No. BV1000I-GR
Subtotal (1 unit)
PHP9,655.58(exc. VAT)
PHP9,655.58/unit
Stocked by manufacturer
Teltonika 130 W Power Adapter AC/DC Adapter Australia 50V dc Output, 2.5 A
  • RS Stock No. 756-281
  • Mfr. Part No. PR313AU3
Subtotal (1 unit)
PHP6,375.92(exc. VAT)
PHP6,375.92/unit
Last RS stock
Murata Power Solutions MEV1 DC/DC Converter, 15V dc/ 67 mA, 12V dc Input, 10.8V Input 1 W, Through Hole, 85 °C Max Temp
  • RS Stock No. 689-4814P
  • Mfr. Part No. MEV1S1215SC
Subtotal 1 unit (supplied in a tube)
PHP372.78(exc. VAT)
PHP372.78/unit
In Stock
Murata Power Solutions MEF1 DC/DC Converter, 5V dc/ 200 mA, 5.25V dc Input, 4.75V Input 1 W, Through Hole, 85 °C Max
  • RS Stock No. 829-4742P
  • Mfr. Part No. MEF1S0505SP3C
Subtotal 1 unit (supplied in a tube)
PHP361.22(exc. VAT)
PHP361.22/unit
In Stock
Wurth Elektronik Through Hole LAN Ethernet Transformer, 85 °C, -40 °C 21.5 mm
  • RS Stock No. 212-5878
  • Mfr. Part No. 74980104400
Subtotal (1 unit)
PHP326.52(exc. VAT)
PHP326.52/unit
Currently unavailable
XP Power JCK DC/DC Converter, 15V dc/ 1 A, 36V dc Input, 18V Input 40 W, Through Hole, 75 °C Max Temp -40 °C Min Temp,
  • RS Stock No. 122-7438P
  • Mfr. Part No. JCK3024D15
Subtotal 1 unit (supplied in a tube)
PHP3,414.77(exc. VAT)
PHP3,414.77/unit
Stocked by manufacturer
APC 230V Input Floor UPS, 2200 VA, BGM2200-GR 1320 W
  • RS Stock No. 788-331
  • Mfr. Part No. BGM2200-GR
Subtotal (1 unit)
PHP39,350.74(exc. VAT)
PHP39,350.74/unit
In Stock
MEAN WELL Switching Power Supply, MPM-30-48ST 48V dc, 630mA, 30.2 W, Input 80V ac to 264V ac
  • RS Stock No. 174-8079
  • Mfr. Part No. MPM-30-48ST
Subtotal (1 unit)
PHP1,197.49(exc. VAT)
PHP1,197.49/unit
In Stock
Murata Power Solutions NME DC/DC Converter, 5V dc/ 200 mA, 13.2V dc Input, 10.8V Input 1 W, Through Hole, 85 °C Max Temp
  • RS Stock No. 544-2689P
  • Mfr. Part No. NME1205DC
Subtotal 1 unit (supplied in a tube)
PHP457.46(exc. VAT)
PHP457.46/unit
Temporarily out of stock
Artesyn / Advanced Energy ASA 6W-M DC/DC Converter, 5V dc/ 1 A, 36V dc Input, 18V Input 5 W, Through Hole, 75 °C Max
  • RS Stock No. 162-1929
  • Mfr. Part No. ASA01A24-M
Subtotal (1 tube of 10 units)
PHP34,589.66(exc. VAT)
PHP34,589.66/tube
Currently unavailable
XP Power IA DC/DC Converter, 24V, -24 V/ 21 mA, 5.5V dc Input, 4.5V Input 1 W, Through Hole, 85 °C Max Temp -40 °C Min
  • RS Stock No. 122-6833P
  • Mfr. Part No. IA0524D
Subtotal 1 unit (supplied in a tube)
PHP360.60(exc. VAT)
PHP360.60/unit
Temporarily out of stock
XP Power ITQ DC/DC Converter, 5V dc/ 1.2 A, 75V dc Input, 18V Input 6 W, Through Hole, 100 °C Max Temp -40 °C Min Temp,
  • RS Stock No. 122-6040P
  • Mfr. Part No. ITQ4805SA-H
Subtotal 1 unit (supplied in a tube)
PHP1,733.00(exc. VAT)
PHP1,733.00/unit
In Stock
TRACOPOWER TDR 3WISM DC/DC Converter, 12V dc/ 250 mA, 75V dc Input, 18V Input 3 W, Surface, 85 °C Max Temp -40 °C Min
  • RS Stock No. 706-5417P
  • Mfr. Part No. TDR 3-4812WISM
Subtotal 1 unit (supplied in a tube)
PHP2,136.02(exc. VAT)
PHP2,136.02/unit
Stock information currently inaccessible
TRACOPOWER TEN 60 DC/DC Converter, 15V dc/ 4 A, 36V dc Input, 18V Input 60 W, PCB, 75 °C Max Temp -40 °C Min Temp, 8-Pin
  • RS Stock No. 168-945P
  • Mfr. Part No. TEN 60-2413
Subtotal 1 unit (supplied in a tube)
PHP6,355.40(exc. VAT)
PHP6,355.40/unit
Temporarily out of stock
XP Power IE DC/DC Converter, 12V dc/ 0.08 A, 3.3V dc Input, 2.7V Input 1 W, Through Hole, 90 °C Max Temp -40 °C Min
  • RS Stock No. 122-6864P
  • Mfr. Part No. IE0312S
Subtotal 1 unit (supplied in a tube)
PHP315.81(exc. VAT)
PHP315.81/unit
Stock information currently inaccessible
TRACOPOWER THD 10 DC/DC Converter, 12V dc/ 830 mA, 36V dc Input, 18V Input 10 W, Through Hole, 71 °C Max Temp -40 °C Min
  • RS Stock No. 510-5992P
  • Mfr. Part No. THD 10-2412
Subtotal 1 unit (supplied in a tube)
PHP3,537.99(exc. VAT)
PHP3,537.99/unit
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