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Name: S-250
Product catalog: S/NES Series single output power supply

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250W Single Output Switching Power Supply   S-250 series
High efficiency, high reliability, low cost
Universal AC input / full range
100% full load burn-in test
Protections: Short circuit/ Over load/ Over voltage
PWM control and regulated
Forced air cooling by built in DC fan
Built-in cooling Fan ON-OFF control
Fixed switching frequency at 25 KHz
2 years warranty

Model S-250-7.5 S-250-12 S-250-13.5 S-250-15 S-250-24 S-250-27 S-250-48
DC output voltage 7.5V 12V 13.5V 15V 24V 27V 48V
Output voltage error ±2% ±1% ±1% ±1% ±1% ±1% ±1%
Rated output current 33A 20A 18.5A 16.7A 10A 9A 5A
Output current range 0-33A 0-20A 0-18.5A 0-16.7A 0-10A 0-9A 0-5A
Wave and noise 200mVp-p 150mVp-p 150mVp-p 150mVp-p 150mVp-p 150mVp-p 240mVp-p
Inlet stability ±0.5% ±0.5% ±0.5% ±0.5% ±0.5% ±0.5% ±0.5%
Load stability ±1% ±0.5% ±0.5% ±0.5% ±0.5% ±0.5% ±0.5%
DC output power 247.5W 240W 248W 250.5W 240W 243W 240W
Efficiency 75% 79% 79.00% 80.00% 81% 82% 84%
DC voltage adjustable range  6~9V 10~13.2V 12~15V 13.5~18V 20~26.4V 26~32V 41~56V
AC input voltage range 88~132VAC/176~264VAC selected by switch 47~63Hz;248~370VDC   
Input current 5A/115V 2.5A/230V   
Leakage current  <3.5mA/240VAC
Over Load  105%~135% 
Protection type: Fold back current limiting, recovers automatically after fault condition is removed.
Over Voltage 115%~135%
Protection type: hiccup mode, recovers automatically after fault condition is removed.
Over Temp.  RT3≥55℃ Fan On, ≤45℃ Fan Off, ≥80℃ Output Shutdown (5~7.5V) 
RT3≥65℃ Fan On, ≤55℃ Fan Off, ≥80℃ Output Shutdown (12~15V)
RT3≥70℃ Fan On, ≤60℃ Fan Off, ≥85℃ Output Shutdown (24~48V)
Working Temp., Humidity -10℃~+50℃; 20%~90%RH
Storage Temp., Humidity -20℃~+85℃; 10%~95%RH
Vibration 10~500Hz, 2G 10min./1cycle, period for 60min, each along X, Y, Z axes
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
Safety Standard Design refer to UL1950
EMC Standard Design refer to EN55022, EN55024, EN61000
Dimension 215*115*50mm(L*W*H)
Weight 1Kg
Packing 20pcs/20Kg
1.All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
2. Ripple & noise are measured at 20MHz of bandwidth by using a 12” twisted pair-wire terminated with a 0.1μ & 47μ parallel capacitor. 
3.Tolerance: includes set up tolerance, line regulation and load regulation

If you have any enquiry about quotation or cooperation , please feel free to email us at or use the following enquiry form . Our sales representative will contact you within 24 hours. Thank you for your interest in our products.