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    24V DC 16.6A 400W Switching Power Supply

    5 out of 5 based on 2 reviews | Write a review
    Competitive price 400W switching power supply (SMPS) has univeral AC input and output voltage 24V DC with high performance and low price, ideal DC power supply with for applications in the industry like drilling machine, air compressor, solar system, wind power generation etc.
    SKU: ATO-SMPS-400-24
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days


    • Univeral AC input/Full range
    • Protections: short circuit, overload and overvoltage
    • Forced air cooling by built-in DC fan
    • PWM control and regulated
    • 100% full load burn-in test
    • Low cost, compact size and high efficiency


    Model ATO-S-400-24
    DC Voltage 24V
    Rated Current 16.5A
    Current Range 0 ~ 16.5A
    Rated Power 396W
    Ripple & Noise (Max.)(Note 2) 180mVp-p
    Voltage Adjust Range 21.84 ~ 26.64V
    Voltage Tolerance (Note 3) ±1.0%
    Line Regulation ±0.5%
    Load Regulation ±0.5%
    Setup, Rise, Holdup Time 200ms, 40ms, 30ms at full load
    Input Voltage Range 90 ~ 132VAC/180V~264VAC (selected by a switch) or 254 ~ 370VDC
    Frequency Range 47~63Hz
    Efficiency (Typ.) 83%
    AC Current (Typ.) 8.5A/115V AC 5A/230V AC
    Inrush Current (Typ.) Cold start: 50A/230V AC
    Leakage Current <3.5mA/240V AC
    Protection Overload 105~135% rated output power
    Protection type: Constant current limiting, recovers automatically after fault condition is removed.
    Overvoltage 27.6~32.4V
    Protection type: Hiccup mode, recovers automatically after fault condition is removed.
     Over temperature RTH3 ≥65°C FAN ON, ≤55°C FAN OFF, ≥80°C output shut down.
    Environment Working Temperature -10 ~ +50℃
    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 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
    Others MTBF ≥234.3K hrs MIN. MIL-HDBK-217F (25℃)
    Dimension 215*115*50mm (L*W*H)
    Weight 1.1kg
    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.

    Dimensions (Unit: mm)

    400W switched mode power supply dimension


    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: Switching power supply vs. power adapter

    Power adaptor operates as conversion equipment for power supply. Most power adaptors are produced in small size, but they are designed in different types. For examples, there are power adaptors respectively used for DC and AC output. They also vary in their connection ways. Some adaptors are designed for wall use and some are designed for desktop use. Power adaptors are widely applied to laptops, cordless phones, repeaters, and game machines. In general conditions, power adaptors are provided with automatic test modules. In addition, voltage and current are marked on adaptors for use reference.

    Switching power supply (SMPS) serves as a valve to control output of voltage and current. When opening the valve, voltage and current will be output. When closing the valve, output of voltage and current will be cut off. Switching power supply involves three major factors, namely DC, high frequency and switch. In modern society, switching power supply presents wider applications than USB chargers and adaptors. All electronic products are equipped with switching power supply.

    Existing reviews of 24V DC 16.6A 400W Switching Power Supply
    Nice 24v switching power supply
    Nice power supply and just what I needed. I purchased this to power my Nema 23 stepper motors. No problem for wiring them up. Works great so far.
    From: Rascal | Date: 22/04/2019
    Was this review helpful? Yes No (0/0)
    Great value for a 24v power supply.
    Bought a switching power supply and shipped quickly. I used this for 3D printer and runs wonderfully for now. Great value for a 24v power supply.
    From: Steve | Date: 06/09/2018
    Was this review helpful? Yes No (0/0)
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