Power Supplies

We have 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 PSU.

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 that is to be powered.

What is the difference between the types of power supplies?

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 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
AC/DC Adapters
AC/DC Adapters
DIN Rail Power Supplies
DIN Rail Power Supplies
Generators
Generators
Linear Power Supplies
Linear Power Supplies
PC Power Supplies
PC Power Supplies
PoE Injectors
PoE Injectors
Power Supply Accessories
Power Supply Accessories
Switching Power Supplies
Switching Power Supplies
Uninterruptible Power Supplies
Uninterruptible Power Supplies

9433 Produits présentés pour Power Supplies

1 sur 472
En stock
Phoenix Contact UNO POWER Power Supply Unit DIN Rail Power Supply 240V ac AC Input 24V dc, 5 A Output DC 120 W
  • N° de stock RS 239-3642
  • Référence fabricant 1110466
Sous-total (1 unité)
79,89 €(TVA exclue)
79,89 €/unité
En stock
Phihong 2 Port 1 Port PoE Injector, 240V ac Input 60 W, 56V dc Output, 1.07 A
  • N° de stock RS 204-7273
  • Référence fabricant POE60U-1BTE
Sous-total (1 unité)
81,69 €(TVA exclue)
81,69 €/unité
Stock limité
RS PRO 60 W Desktop AC/DC Adapter C14 12V dc Output
  • N° de stock RS 304-023
Sous-total (1 unité)
30,30 €(TVA exclue)
30,30 €/unité
Dernier stock RS
RND RND 315 Switched Mode DIN Rail Power Supply 240V ac AC Input 12V dc, 2.5 A Output DC 30 W
  • N° de stock RS 283-2692
  • Référence fabricant RND 315-00012
Sous-total (1 unité)
22,02 €(TVA exclue)
22,02 €/unité
En stock
RS PRO 36 W Power Adapter AC/DC Adapter 2-Pin (EU) 12V dc, 13.5 V dc, 15 V dc, 5 V dc, 6 V dc, 7.5 V dc, 9 V dc Output,
  • N° de stock RS 206-4929
Sous-total (1 unité)
41,88 €(TVA exclue)
41,88 €/unité
Temporairement en rupture de stock
MEAN WELL HDR Switched Mode DIN Rail Power Supply 370 V dc, 264V ac AC/DC Input 24V dc, 2.5 A Output DC 60 W
  • N° de stock RS 145-7873
  • Référence fabricant HDR-60-24
Sous-total (1 unité)
32,12 €(TVA exclue)
32,12 €/unité
En stock
XP Power 150 W AC/DC Power Supply AC/DC Adapter 24V dc Output, 6.25 A
  • N° de stock RS 121-7062
  • Référence fabricant AHM150PS24
Sous-total (1 unité)
123,69 €(TVA exclue)
123,69 €/unité
En stock
brennenstuhl 20 W AC/DC Adapter Type C 5V Output, 3 A
  • N° de stock RS 649-076
  • Référence fabricant 1172640083
Sous-total (1 unité)
16,12 €(TVA exclue)
16,12 €/unité
En stock
RS PRO 12 W AC/DC Adapter AC/DC Adapter 2-Pin (EU) 5V dc Output, 2.4 A
  • N° de stock RS 206-4919
Sous-total (1 unité)
15,93 €(TVA exclue)
15,93 €/unité
En stock
MEAN WELL 120 W AC/DC Adapter 24V dc Output, 5 A
  • N° de stock RS 283-7427
  • Référence fabricant GST120A24-P1M
Sous-total (1 unité)
41,40 €(TVA exclue)
41,40 €/unité
En stock
Phoenix Contact TRIO POWER Power Supply DIN Rail Power Supply 240V ac DC Input 24V, 10 A Output DC 240 W
  • N° de stock RS 286-0998
  • Référence fabricant 1252696
Sous-total (1 unité)
266,64 €(TVA exclue)
266,64 €/unité
En stock
PULS PIANO Switched Mode DIN Rail Power Supply 230V ac AC Input 28V dc, 5 A Output DC 120 W
  • N° de stock RS 123-8020
  • Référence fabricant PIC120.242C
Sous-total (1 unité)
91,31 €(TVA exclue)
91,31 €/unité
En stock
RS PRO 50.4 W AC/DC Adapter UK, EU 48V Output, 1.05 A
  • N° de stock RS 270-7411
Sous-total (1 unité)
36,72 €(TVA exclue)
36,72 €/unité
En stock
MEAN WELL Switching Power Supply, IRM-30-12ST 12V dc, 2.5A, 30 W, Input 85V ac to 264V ac
  • N° de stock RS 135-8951
  • Référence fabricant IRM-30-12ST
Sous-total (1 unité)
20,90 €(TVA exclue)
20,90 €/unité
En stock
PULS DIMENSION Switched Mode DIN Rail Power Supply 240V ac AC Input 28V dc, 10 A Output DC 240 W
  • N° de stock RS 514-5574
  • Référence fabricant QS10.241
Sous-total (1 unité)
313,91 €(TVA exclue)
313,91 €/unité
En stock
Hama 90 W Plug In Power Supply EU 12V, 22 V Output, 4 A
  • N° de stock RS 325-041
  • Référence fabricant 00200004
Sous-total (1 unité)
64,46 €(TVA exclue)
64,46 €/unité
En stock
PULS PIANO Switched Mode DIN Rail Power Supply 230V ac AC Input 28V dc, 20 A Output DC 480 W
  • N° de stock RS 136-9955
  • Référence fabricant PIC480.241C
Sous-total (1 unité)
213,65 €(TVA exclue)
213,65 €/unité
En stock
Eaton Environmental Monitoring Probe UPS Monitoring Probe for use with UPS
  • N° de stock RS 206-4757
  • Référence fabricant EMPDT1H1C2 Environmental Monitoring Probe gen 2
Sous-total (1 unité)
196,50 €(TVA exclue)
196,50 €/unité
En stock
Ansmann 27 W AC-DC Converter Power Supplies AC/DC Adapter 2-Pin (EU), 3-Pin (Global) 12V dc, 13.5 V dc, 15 V dc, 5 V dc,
  • N° de stock RS 702-3261
  • Référence fabricant 5311133-UK
Sous-total (1 unité)
46,78 €(TVA exclue)
46,78 €/unité
En stock
RS PRO 60 W AC/DC Adapter AC/DC Adapter Type C 24V dc Output, 2.5 A
  • N° de stock RS 175-3333
Sous-total (1 unité)
33,07 €(TVA exclue)
33,07 €/unité
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