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    24V DC 5A 120W Switching Power Supply

    5 out of 5 based on 1 reviews | Write a review
    24V DC switching power supply converts 110V/220V AC to DC with rated current 5A and rated power 120W, mounting in DIN rail . Compact size SMPS is durable, reliable and safe, ideal for office devices, home appliances, industrial equipment etc.
    SKU: ATO-SMPS-120-24
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    Delivery date: 6-12 days


    • AC input range selectable by switch
    • Protections: short circuit, overload, overvoltage and over temperature
    • Cooling by free air convection
    • Installed on DIN rail TS-35/7.5 or 15
    • LED indicator for power on
    • 100% full load burn-in test


    Model ATO-DR-120-24
    DC Voltage 24V
    Rated Current 5A
    Current Range 0 ~ 5A
    Rated Power 120W
    Ripple & Noise (Max.)(Note 2) 80mVp-p
    Voltage Adjust Range 24 ~ 28V
    Voltage Tolerance (Note 3) ±1.0%
    Line Regulation ±0.5%
    Load Regulation ±1.0%
    Setup, Rise, Holdup Time 500ms, 70ms, 36ms/230V AC    500ms, 70ms, 32ms/115V AC
    Input Voltage Range 88 ~132V /176 ~ 264V AC by switch or 248 ~ 370V DC
    Frequency Range 47~63Hz
    Efficiency (Typ.) 84%
    AC Current (Typ.) 2.6A/115V AC    1.6A/230V AC
    Inrush Current (Typ.) Cold start: 20A/115V AC    40A/230V AC
    Leakage Current <3.5mA/240V AC
    Protection Overload 105~150% rated output power
    Protection type: Constant current limiting, recovers automatically after fault condition is removed.
    Overvoltage 29V ~ 33V
    Protection type: Shut down o/p voltage, re-power on to recover.
    Over temperature 90"C+5"C(TSW1)
    Protection type: Protection type: Shut down output voltage, and recover automatically after temperature goes down.
    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 UL60950-1, TUV EN60950-1 Approved
    Withstand Voltage I/P-O/P:3KVAC    I/P-FG:2.0KVAC    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 EN55022 (CISPR22) Class B, EN61000-3-2, -3
    EMC Immunity Compliance to EN61000-4-2, 3, 4, 5, 6, 8, 11, EN55024, EN61000-6-2, EN61204-3, heavy industry level, criteria A
    Others MTBF ≥432.1K hrs MIN. MIL-HDBK-217F (25℃)
    Dimension 65.5*125.2*100mm (W*H*D)
    Weight 0.79kg
    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.

    Dimensions (Unit: mm)

    120W switched mode power supply dimensions


    120W Switching Power Supply Details

    Tips: Protective circuit of DC switching power supply (SMPS)

    1. Protective circuit for overcurrent

    To protect modulation tube from being burned out in short circuit or instant increase of current, DC switching power supply cuts off power when output current exceeds a threshold value and sets the modulation tube at reverse bias.

    2. Protective circuit for overvoltage

    Overvoltage protection of switch regulator in DC SMPS refers to input overvoltage protection and output overvoltage protection. If unregulated DC voltage used by switch regulator appears excessively high (such as accumulator and rectifier), the regulator will be unable to work properly or will even damage its internal components. Therefore, switching power supply must be equipped with input overvoltage protective circuit.

    3. Protective circuit for overheat

    Highly-integrated, small-size and light-weight switch regulator in DC switching power supply has greatly improved power density of unit volume. If requirements for working temperature of internal components of the power supply fall behind, the performance of the circuit will become poorer and the components will be even ineffective. Therefore, high-power DC SMPS shall be provided with overheat protective circuit.

    Existing reviews of 24V DC 5A 120W Switching Power Supply
    Payment method for 24V switching power supply
    Can this 24V switching power supply accept instant payment by credit card?
    From: Chacon | Date: 30/03/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, you can use a credit card to place an order directly on our website online.
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