30W 12VDC Class 2 Triac dimmable 100-277VAC constant voltage LED driver + PWM signal




30W 12VDC Triac dimmable 100-277VAC constant voltage LED driver + PWM signal

UL Listed 277VAC Class 2 Isolation Triac Dimmable LED 12VDC Power Supply with Built In Junction Box. MRS-12V30W-DVTH is the high power factor 0.98, efficiency>86% 12v 30w Triac Dimmable LED driver with cULus recognized.

  • Output constant voltage
  • Input voltage range 100-277VAC
  • Built-in PFC function, PF> 0.98
  • Efficiency > 87% / load:0~100%
  • Protections:short circuit/over voltage/over heat
  • Cooling by free air convection
  • Work with leading edge and trailing edge triac dimmers available
  • PWM output, does not change the color index
  • 1.0 version suitable for dry & damp location
  • 2.0 version suitable for dry, damp & wet location
  • Strong compatibility, flicker-free dimming
  • Suitable for LED lighting and moving sign applications
  • Compliance to worldwide safety regulations for lighting
  • 7 years warranty

※Input:18AWG Black and White to be connected to AC L and N ,Green wire go ground,

※Output: Red is(DIM+),Black is(DIM-)

※Note: Any other requests we can customized.

■Dimming Operation

※Output constant current level can be adjusted through input terminal of the AC phase line(L) by connection a triac dimmer.

※Compatible with Leading edge or trailing edge triac dimmers, but trailing edge dimmers work better..

※Please try to use dimmers with power at least 1.5 times as the output power of the driver.

 ■Derating Curve

  • Load carried in accordance with the load derating curve, according to the ambient temperature derating, in order to extend the service life

■Connecting Diagram

■ Simple Connection Diagram


model MRS-12V30W-DVTH(1.0 version)
Output DC Voltage 12VDC
Voltage Accuracy ±5%
Rated current 2.5Amp
Rated power  30W
Voltage Regulation ±0.5%
Load Regulation ±1%
Input Voltage Range 100-277 VAC
Frequency Range 47~63HZ
Power Factor ( Typ.) PF≧0.99/110V ;  PF≧0.97/277V
Full Load Efficiency(Typ.) >82%
AC Current(Typ.) 0.33A/110VAC  /  0.13A/277VAC
Leakage current <0.27mA/110VAC; ﹤0.25mA/277VAC
Protection  Short Circuit Hiccup mode, recovers automatically after fault condition 
is removed.
Over Loading ≤120% shut down o/p voltage, re-power on to recover
Over temperature 100℃±10℃ shut down o/p voltage, automatically recover after cooling.
Environment Working TEMP. -40~+60℃
Working Humidity  20~90%RH,non-condensing
Storage TEM.,Humidity -40~+80℃,10~95%RH
TEMP.coefficient ±0.03%/℃(0~50℃)
Vibration 10~500Hz,2G 10min./1 cycle,period for 60min.
each along X,Y,Z  axes
Safety&EMC Safety standards UL8750+UL1310
Withstand voltage I/P-O/P:3.75KVAC  
Isolation resistance I/P-O/P:100MΩ/500VDC/25℃/70%RH
EMC IMMUNITY  Compliance to EN61000-4-2,3,4,5,6,,11, ,         
Alight industry level
Others Weight 0.95Kg  
Size 1.0 version:165*92*26mm (L*W*H); 2.0 version:165*94.5*40mm (L*W*H) 
packing 355*215*215mm / 10PCS/CTN
Notes 1.    All parameters NOT specially mentioned are measured at 110VAC, 277VAC input , 
Rated load and 25℃of ambient temperature.
2.  Tolerance:includes set us tolerance,line regulation and load regulation .


■ Instruction:

※This driver should be installed by qualified and professional person;

※Please make sure the driver is installed with adequate ventilation around it to allow for heat dissipation.

※Ensure that wiring is correct before test in order to avoid light and power supply damage;

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