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    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

    8870 Products showing for Power Supplies

    1 of 444
    APC 230V Input Rack Mount UPS, 8000VA (8kW), SRT8KXLI
    • RS stock no. 287-7928
    • Mfr. Part No. SRT8KXLI
    Each
    R 198 252,33
    SIP 10kW Generator, 230/400V ac Output, 275kg
    • RS stock no. 264-2187
    • Mfr. Part No. 25151
    Each
    R 164 220,04
    Eaton 276V Input Rack Mount Uninterruptible Power Supply, 3000VA (3kW), 9PX3000IRTN-L
    • RS stock no. 287-7592
    • Mfr. Part No. 9PX3000IRTN-L Eaton 9PX 3000i RT2U Netpack Li-Ion
    Each
    R 146 612,60
    APC 230V Input Rack Mount Uninterruptible Power Supply, 5000VA (4.5kW), PQUA-8ASKY4
    • RS stock no. 146-8162
    • Mfr. Part No. SRT5KRMXLI
    Each
    R 136 712,34
    Eaton 176 → 276V Input Rack Mount, Stand Alone Uninterruptible Power Supply, 8000VA (7.2kW), 9SX
    • RS stock no. 250-0348
    • Mfr. Part No. 9SX8KIRT
    Each
    R 131 165,67
    Eaton 276V Input Rack Mount Uninterruptible Power Supply, 2200VA (2.2kW), 9PX2200IRTN-L
    • RS stock no. 287-7590
    • Mfr. Part No. 9PX2200IRTN-L Eaton 9PX 2200i RT2U Netpack Li-Ion
    Each
    R 103 341,09
    Riello 220 → 240V Input Rack Mount, Stand Alone Uninterruptible Power Supply, 6000VA (6kW), Sentinel Dual SDU
    • RS stock no. 255-8479
    • Mfr. Part No. SDU 6000 PD
    Each
    R 96 167,21
    Eaton 176 → 276V Input Rack Mount, Stand Alone Uninterruptible Power Supply, 5000VA (4.5kW), 9SX
    • RS stock no. 250-0345
    • Mfr. Part No. 9SX5KIRT
    Each
    R 94 437,88
    Riello 220 → 240V Input Tower Uninterruptible Power Supply, 6000VA (6kW), Extended recharger for Sentinel Tower
    • RS stock no. 255-8487
    • Mfr. Part No. STW 6000 ER
    Each
    R 82 271,08
    Eaton 100 → 276 (With Derating) V, 176 → 276 (Without Derating) V Input Rack Mount, Stand Alone
    • RS stock no. 125-3920
    • Mfr. Part No. 9PX3000IRTN Eaton 9PX 3000i RT2U Netpack
    Each
    R 78 285,93
    MEAN WELL Switching Power Supply, RST-10000-24, 24V dc, 400A, 9.6kW, 1 Output, 196 → 305V ac Input Voltage
    • RS stock no. 876-2618
    • Mfr. Part No. RST-10000-24
    Each
    R 73 778,52
    APC 208 → 230V Input Rack Mount, Stand Alone Uninterruptible Power Supply, 3000VA (2.7kW), Smart-UPS X
    • RS stock no. 215-3238
    • Mfr. Part No. SMX3000HVNC
    Each
    R 73 196,83
    Socomec 230V Input Stand Alone Uninterruptible Power Supply, 10000VA (10kW), ITYS
    • RS stock no. 233-2978
    • Mfr. Part No. ITY3-TW100B
    Each
    R 78 235,58
    APC 230V Input Stand Alone Uninterruptible Power Supply, 6000VA (6kW), Easy UPS
    • RS stock no. 247-2087
    • Mfr. Part No. SRVS6KI
    Each
    R 60 503,74
    APC 230V Input Rack Mount Uninterruptible Power Supply, 2200VA (1.98kW), Smart-UPS SRT
    • RS stock no. 215-3250
    • Mfr. Part No. SRT2200RMXLI-NC
    Each
    R 65 642,11
    Better World
    Eaton 100 → 276 (With Derating) V, 176 → 276 (Without Derating) V Input Rack Mount, Stand Alone
    • RS stock no. 125-3915
    • Mfr. Part No. 9PX3000IRT3U Eaton 9PX 3000i RT3U
    Each
    R 66 242,74
    Eaton 190 → 276V ac Input Stand Alone Uninterruptible Power Supply, 3000VA (2.7kW), 9SX
    • RS stock no. 201-9759
    • Mfr. Part No. 9SX3000I Eaton 9SX 3000i
    Each
    R 59 442,61
    Socomec 230V Input Stand Alone Uninterruptible Power Supply, 6000VA (6kW), ITYS
    • RS stock no. 233-2976
    • Mfr. Part No. ITY3-TW060B
    Each
    R 56 470,36
    APC Maintenance Bypass, for use with APC InfraStruXure Type A, Smart-UPS, Symmetra UPS products
    • RS stock no. 238-7234
    • Mfr. Part No. SBP20KRMI4U
    Each
    R 60 068,77
    APC 230V Input Stand Alone Uninterruptible Power Supply, 6000VA, Easy UPS
    • RS stock no. 247-2290
    • Mfr. Part No. SRVS6KI
    Each
    R 49 201,72
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