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    Power Supplies

    RS offers a wide selection of power supply units (PSUs) for use in various domestic and industrial applications. Our range of power supplies 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 buildingMaintenanceMarine & offshoreMilitary & defenceAutomotiveElectrical wiringDomesticFood and beverageManufacturing

    AC/DC Adapters
    AC/DC Adapters
    DIN Rail Power Supplies
    DIN Rail Power Supplies
    Desktop Power Supplies
    Desktop 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

    8012 Products showing for Power Supplies

    1 / 401
    Siemens SITOP PSU200M Switched Mode DIN Rail Power Supply, 85 → 264V ac ac Input, 24V dc dc Output, 10A Output,
    • RS Stock No. 864-4005
    • Mfr. Part No. 6EP1334-3BA10-8AB0
    Each
    MYR2,055.65
    PULS MiniLine MLY Switched Mode DIN Rail Power Supply, 100 → 240V ac ac Input, 24V dc dc Output, 1.3A Output, 30W
    • RS Stock No. 424-6244
    • Mfr. Part No. ML30.100
    Each
    MYR624.75
    APC 230V ac Input Floor Mount UPS, 1200VA (650W), BVX1200LI-GR
    • RS Stock No. 287-7225
    • Mfr. Part No. BVX1200LI-GR
    Each
    MYR932.68
    Siemens SITOP PSU8200 Switched Mode DIN Rail Power Supply, 500V ac ac Input, 24V dc dc Output, 40A Output, 960W
    • RS Stock No. 203-4068
    • Mfr. Part No. 6EP3437-8SB00-0AY0
    Each
    MYR2,178.13
    Chinfa AMR1 Switched Mode DIN Rail Power Supply, 230V ac ac Input, 24V dc dc Output, 420mA Output, 10W
    • RS Stock No. 789-4032
    • Mfr. Part No. AMR1-24
    Each
    MYR158.59
    Chinfa WRA 480 Switched Mode DIN Rail Power Supply, 400V ac ac Input, 24V dc dc Output, 20A Output, 480W
    • RS Stock No. 816-3929
    • Mfr. Part No. WRA480-24
    Each
    MYR1,383.51
    Omron S8VK-G Switched Mode DIN Rail Power Supply, 100 → 240 V ac / 90 → 350V dc ac, dc Input, 24V dc dc
    • RS Stock No. 776-9481
    • Mfr. Part No. S8VK-G01524
    Each
    MYR285.44
    TDK-Lambda AC-DC Converter, ZWS100B-12, 12V dc, 8.5A, 102W, 1 Output, 85 → 264V ac Input Voltage
    • RS Stock No. 237-7488
    • Mfr. Part No. ZWS100B-12
    Each
    MYR257.04
    Exsys 2 Port POE Injector, 24V Input, 56V dc Output, 3A, 30.2W
    • RS Stock No. 283-5888
    • Mfr. Part No. EX-6007POE
    Each
    MYR910.12
    Cosel Switching Power Supply, PJA100F-12, 12V dc, 8.4A, 100.8W, 1 Output, 85 → 264V ac Input Voltage
    • RS Stock No. 132-7426
    • Mfr. Part No. PJA100F-12
    Each
    MYR293.20
    Siemens SITOP PSU100S Switched Mode DIN Rail Power Supply, 85 → 132V ac ac Input, 24V dc dc Output, 5A Output,
    • RS Stock No. 776-7725
    • Mfr. Part No. 6EP1333-2BA20
    Each
    MYR756.42
    Siemens 22 → 29V dc Input DIN Rail Uninterruptible Power Supply (360W), SITOP DC
    • RS Stock No. 624-7479
    • Mfr. Part No. 6EP1931-2EC42
    Each
    MYR2,445.36
    XP Power Switching Power Supply, EPL225PS24 , 24V dc, 9.38A, 225W, 1 Output, 85 → 264V ac Input Voltage
    • RS Stock No. 122-7637
    • Mfr. Part No. EPL225PS24
    Each
    MYR508.73
    Cosel Switching Power Supply, PBW15F-15-N, ±15V dc, 1 A, 500 mA, 15W, Dual Output, 110 → 370 V dc, 85 →
    • RS Stock No. 603-1117
    • Mfr. Part No. PBW15F-15-N
    Each
    MYR203.22
    OPTI 230V Input Stand Alone Uninterruptible Power Supply, 800VA (480W), Thunder Shield
    • RS Stock No. 714-0161
    • Mfr. Part No. TS1000B
    Each
    MYR605.34
    MEAN WELL SDR Switched Mode DIN Rail Power Supply, 88 → 264V ac ac Input, 24V dc dc Output, 3.2A Output, 75W
    • RS Stock No. 122-2222
    • Mfr. Part No. SDR-75-24
    Each
    MYR195.42
    MEAN WELL Switching Power Supply, RPS-300-24RS, 24V dc, 8.33 A, 12.5 A, 200W, 1 Output, 127 → 370 V dc, 90
    • RS Stock No. 770-3970
    • Mfr. Part No. RPS-300-24RS
    Each
    MYR317.15
    APC 230V ac Input Floor Mount UPS, 700VA (360W), BVX700LI
    • RS Stock No. 287-7230
    • Mfr. Part No. BVX700LI
    Each
    MYR642.83
    Delta Electronics DRC Switched Mode DIN Rail Power Supply, 90 → 264 V ac / 125 →375V dc ac, dc Input, 24V
    • RS Stock No. 241-1623
    • Mfr. Part No. DRC-24V30W1AZ
    Each
    MYR100.96
    Siemens SITOP PSU8200 Switched Mode DIN Rail Power Supply, 120 → 230 V ac / 110 → 220V dc ac, dc Input,
    • RS Stock No. 714-1287
    • Mfr. Part No. 6EP1336-3BA10
    Each
    MYR2,050.92
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