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    24V DC 4.5A 100W Switching Power Supply

    5 out of 5 based on 2 reviews | Write a review
    Low price 24V DC switching power supply has universal AC input voltage (selected by a switch), 4.5A rated current and 108W rated power, cooling by free air convection, short circuit and overload protection, ideal SMPS power supply for all kinds of applications.
    SKU: ATO-SMPS-100-24
    30-day Returns
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    Delivery date: 6-12 days


    • Universal AC input range selectable by a switch
    • Protections: short circuit and overload
    • Cooling by free air convection
    • LED indicator for power on
    • 100% full load burn-in test
    • Low cost and high reliability


    Model ATO-S-100-24
    DC Voltage 24V
    Rated Current 4.5A
    Current Range 0 ~ 4.5A
    Rated Power 108W
    Ripple & Noise (Max.)(Note 2) 100mVp-p
    Voltage Adjust Range 21.6 ~ 26.4V
    Voltage Tolerance (Note 3) ±1.0%
    Line Regulation ±0.2%
    Load Regulation ±0.2%
    Setup, Rise, Holdup Time 200ms, 80ms, 20ms at full load
    Input Voltage Range 85 ~ 132VAC/180V~264VAC (selected by a switch) or 255 ~ 370VDC
    Frequency Range 47~63Hz
    Efficiency (Typ.) 84%
    AC Current (Typ.) 2.4A/115V AC 1.2A/230V AC
    Inrush Current (Typ.) Cold start: 30A/115V AC 60A/230V AC
    Leakage Current <1mA/240V AC
    Protection Overload 105~150% rated output power
    Protection type: Shut down output voltage, re-power on to recover.
    Environment Working Temperature -10 ~ +60℃
    Working Humidity 20~90% RH non-condensing
    Storage Temperature -20~+85℃
    Storage Humidity 10~95% RH non-condensing
    Temperature Coefficient ±0.03%/℃ (0~50℃)
    Vibration 10 ~ 500Hz, 2G 10min./1 cycle, period for 60min. each along X, Y, Z axes
    Safety & EMC (Note 4) Safety Standards UL1012 Approved
    Withstand Voltage I/P-O/P: 1.5KVAC I/P-FG: 1.5KVAC O/P-FG: 0.5KVAC
    Isolation Resistance I/P-O/P, I/P-FG, O/P-FG: 100M Ohms/500VDC/25℃/70% RH
    EMC Emission Compliance to FCC Part 15 J conduction Class B
    Others MTBF ≥322.4K hrs MIN. MIL-HDBK-217F (25℃)
    Dimension 199*98*38mm (L*W*H)
    Weight 0.63kg
    Note 1. All parameters NOT specially mentioned are measured at 230V AC input, rated load and 25°C of ambient temperature.
    2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor.
    3. Tolerance includes set up tolerance, line regulation and load regulation.
    4. The switching power supply is considered a component which will be installed into final equipment. Please make sure that the final equipment still meets EMC directives.

    Dimension (Unit:mm)

    100W switch-mode power supply dimensionSMPS terminal pin number assignment


    24V DC Switching Power Supply Details

    SMPS Power Supply Applications

    • Power Tools
      Electric Saw, Drilling Machine, Ginder, Sand Blast Machine, Puching Machine, Weeding Machine, Air Compressor, etc.
    • Offices Devices
      Computer, Printer, LCD Monitor, Scanning Machine, etc.
    • Electrics & Household Appliance
      TV, VCRS, Radio, Dust Collector, Fan Lamp or LED Strip, Sewing Machine, Microwave Oven, Fridge/Freezr, Coffemarker, etc.
    • Industrial Equipemnt
      Monitoring Equipment, Shipping, Vehicle, Metalhalide Lamp, Solar System, Wind Power Generation, etc.

    Tips: Operating modes of switching power supply

    Switching power supply provides users with three operating modes for modulation of fixed frequency and pulse width, adjustable frequency and pulse width, as well as fixed frequency with adjustable pulse width. The first operating mode is used for DC/AC inversion or DC/DC voltage conversion. The latter two modes are used for switching voltage regulator. In addition, it outputs voltage in three modes, namely direct output, average output, and amplitude output. Similarly, the first operating mode is used for DC/AC inversion or DC/DC voltage conversion. The latter two modes are used for switching voltage regulator.

    Switching power supply can be categorized into tandem type, parallel type and transformer type according to its connection types in circuits. Among which, the transformer type (also known as transformer switching power supply) can be further classified into push-pull type, half-bridge type and full-bridge type. According to excitation and voltage output phases of transformers, it can be divided into forward type, fly back type, single excitation type, and double excitation type. Moreover, it could be classified into more types by its purposes.

    Existing reviews of 24V DC 4.5A 100W Switching Power Supply
    Suggest a 24V DC switching power supply model
    Will this fit a 24 volt DC switching power supply model that is capable of running 19 of these current sensors?
    From: james | Date: 26/11/2023
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, it fits.
    Does this one require a load?
    Some power supplies do not hold the correct voltage output unless there is a load connected. Does this switching power supply require a load? How loud is it? Does it have an internal fan?
    From: Judy | Date: 06/05/2022
    Was this review helpful? Yes No (0/0)
    ATO Responded
    It requires input 85 ~ 132VAC/180V~264VAC (selected by a switch) or 255 ~ 370VDC. It is very silent and it doesn't need a internal fan becasue the special design makes it good at heat dispersion.
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