LIF240-26Bxx Series-240W Din Rail Switching Power Supply

This Din Rail Switching Power Supply is a power supply device used to convert the input voltage into a stable output voltage. It uses switching devices (such as transistors or MOSFETs) to control the switching state of the circuit to achieve high-efficiency power conversion. Switching Power Supply is generally more efficient and smaller than traditional linear power supplies. It is widely used in electronic equipment, computers, communication equipment and other fields.

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  • Universal 180-550VAC or 254-780VDC input voltage
  • Single/Two phase both available
  • Operating ambient temperature range: -40℃ to +70℃
  • Low ripple & noise, high efficiency
  • DC OK function
  • Built-in active PFC function
  • 150% peak load for 5 seconds
  • Output short circuit, over-current, over-voltage, over-temperature, constant current limit protection
  • OVC III, 2000m altitude (UL62477 standards)
  • Safety according to UL/EN/BS EN62368, UL61010, UL62477


Input Specifications
Item Operating Conditions Min. Typ. Max. Unit
Input Voltage Range AC input 180 550 VAC
DC input 254 780 VDC
Input Frequency 47 63 Hz
Input Current 230VAC 2.0 A
400VAC 1.0
Inrush Current 400VAC Cold start 110
Power Factor 230VAC 0.93
400VAC 0.90
Leakage Current 480VAC 1mA RMS Max.
Input Temporary Over-voltage Rated load output, 600VAC input 5s/time, interval 10s, product without damaging
Hot Plug Unavailable
Output Specifications
Item Operating Conditions Min. Typ. Max. Unit
Output Voltage Accuracy Full load range ±1.0 %
Line Regulation Rated load ±0.5
Load Regulation 400VAC ±1.0
Ripple & Noise* 20MHz bandwidth (peak-to-peak value) 150 mV
Temperature Coefficient ±0.03 %/°C
Short Circuit Protection Hiccup, continuous, self-recovery
Over-current Protection ≥150% Io, hiccup, self-recovery
Over-voltage Protection 24V output ≤33V Output voltage clamp or hiccup
48V output ≤65V
Over-temperature Protection 400VAC, rated load Output voltage turn off, self-recovery
Minimum Load 0 %
Start-up Time 230VAC 1.5 3.0 s
400VAC 0.8 1.5
DC OK Signal** Resistive load 30VDC/1A Max.
Hold-up Time Room temperature, full load 230VAC 18 ms
400VAC 18
Note: *The “Tip and barrel method” is used for ripple and noise test, output parallel 47uF electrolytic capacitor and 0.1uF ceramic capacitor, please refer to Enclosed Switching Power Supply Application Notes for specific information.

**DC OK Signal: When the output voltage is normal, the relay is connected. When the output voltage is abnormal (<90%Vo), the relay is disconnected.


General Specifications
Item Operating Conditions Min. Typ. Max. Unit



Input – output  

Electric Strength Test for 1min., leakage current<5mA




Input – PE 2000
Output – PE 500
Output – DC OK 500

Insulation Resistance

Input – output  







Input – PE
Output – PE
Operating Temperature -40 +70  

Storage Temperature -40 +85
Operating Humidity Non-condensing 95 %RH
Storage Humidity 95


Power Derating

-40℃ to -30℃ 3.0 %/℃
+50℃ to +70℃ 2.0
180VAC – 200VAC 0.5 %/VAC
2000-5000m 3.5 %/Km
Safety Standard Design refer to UL508, UL61010-1, UL62477-1, UL60664, UL/EN/BS EN62368-1, GB4943.1 & EN61558-1
Safety Class CLASS I
MTBF MIL-HDBK-217F@25℃>300,000 h