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Mean Well 12V 55W DC UPS Switching Power Supply

Manufacturer: Mean Well
Code: ZAS-BUF-12V-55W
Stock: out of stockout of stock
Your price: 25.21 EUR 

Mean Well Switching Power Supply - 12V, 55W#

Power supply 12V 55W
Mean Well Switching power supply 12V 55W ensures uninterrupted powering of MikroTik RouterBoards or other devices demanding the voltage of 12V. The power supply works with two accumulator batteries 12V/7Ah or 12V/5Ah. In case of power loss the power supply delivers the power from the batteries. When the power comes back the power supply returns to it normal operations and the batteries are recharged automatically.


  • Universal AC input / Fullrange
  • Protections: Short circuit / Overload / Overvoltage
  • Battery low protections
  • Cooling by free air convection
  • 100% full load burn-in test
  • Fixed switching frequency at 45KHz
  • With UPS function (need external batteries)
  • Suitable for security industry or battery backup systems

Technical specification
Output number CH1 CH2
DC voltage 13.8V 13.4V
Rated Current 3.5A 0.23A
Current Range 0~4A --------
Rated Power 51.38W
Ripple & Noise 100mVp-p --------
Voltage Adj. Range CH1:12~14.5V CH1:24~29V
Voltage Tolerance ±1.0% --------
Line Regulation ±0.5% --------
Load Regulation ±0.5% --------
Setup, Rise Time 800ms,50ms/230VAC
Hold Up Time 80ms/230VAC
Voltage Range 88~264VAC 47~63Hz; 124~370VDC
AC Current 1.6A/115VAC 1A/230VAC
Efficiency 71%
Inrush Current Cold start 20A/115VAC
Leakage Current <1mA /240VAC
Over Load 105~150% rated output power
Protection type: AC Charging Mode: Hiccup mode, recovers automatically after fault condition is removed UPS Mode: Protected by internal fuse
Over Voltage CH1:15.87~18.63V
Protection type: Hiccup mode,recovers automatically after fault condition is removed
Working Temp. -10°C~+60°C (Refer to "Derating Curve")
Working Humidity 20~90%RH non-condensing
Storage Temp., Humidity -20°C~+85°C,10~95%RH
Temp. Coefficient ±0.03%/ °C(0°C~50°C )on CH1 output
Vibration 10~500Hz,2G10min./1cycle,60min.each along X, Y,Z axes
Safety Standards UL60950-1, TUV EN60950-1 approved
Withstand Voltage I/P-O/P:3KVAC 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°C /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,light industry level, criteria A
Dimension 159*97*38mm(L*W*H)
Weight 0.5Kg
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This product was added to our catalog on Tuesday 14 January, 2014.
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