Non-dimmable LED Driver

277v 120 volt triac dimmable led power supply 12v dc 300 watt multiple output

smartsled driver triac offers 100-130vac and 277vac. This type is made as multiple output 5*5A, and multiple output

5*60W. The design meets class 2 standard. LEGRAND forward phase cut dimmers 100-130VAC shows good compatibility.

  • Artículo No.:

  • marca:

  • voltaje de entrada:

  • tensión de salida:

  • corriente de salida:

    5*5A; 3*4A
  • modo de trabajo:

    constant voltage
  • proceso de dar un título:

    UL cUL
  • garantía:

    7 years
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detalles del producto

277v 120 volt triac dimmable led power supply 12v dc 300 watt multiple output

The 300 watt led power supplyis 2 in 1 type and offers smooth dimming when compatible with right dimmers and proper load of lights. ELV and MLV dimmers both are available. except LEGRAND dimmers, most LEVITON dimmers are workable.



SMT-012-300VTHJ(1.0 version)

SMT-012-300VTHJV2 (2.0 version)

SMT-012-300VTHJWV2 (3.0 version)

SMT-024-288VTHJ(1.0 version)

SMT-024-288VTHJV2 (2.0 version)

SMT-024-288VTHJWV2 (3.0 version)


dc voltage



voltage tolerance


voltage regulation


voltage tolerance


load regulation




rated current

25A (multi current 5*5A)

12A(multi current 3*4A)

rated power

300W (5*60W)

288W (3*96W)


voltage range


frequency range


power factor (Typ.)@full load

0.95@120VAC 0.95@277VAC

0.99@120VAC 0.96@277VAC

THD(Typ.)@full load


inrush Current(Typ.)

35A (twidth=960us) @120VAC ; 43A (twidth=1ms) @277VAC

Efficiency(Typ.)@Full load

85%@120VAC 90%@277VAC


87%@120VAC 89%@277VAC

ac Current(Typ.)



leakage current



short circuit

shut down o/p voltage, re-power on to recover afterfault conditionisremoved

over load

≤120% constant current limiting, auto-recovery

over temperature

100℃±10℃ shut down o/p voltage,automatically recover after cooling.

over current

≤1.4*I out


working TEMP.


working humidity


storage TEM.,Humidity





10~500Hz 2G 10min./1 cycle,period for 60min.each along X,

Y,Z axes


safety standards


withstand voltage


isolation resistance


EMC emission

fcc part 15 b

EMC immunity

EN61000-4-2,3,4,5,6,11(Surge 4KV)





1.0 version: 301*108*46mm (L*W*H) / 2.0 version: 301*110*45mm

3.0 version: 301*140*45mm


365*210*245mm/8pcs /CTN G.W.:21KG/CTN

385*335*200mm 20PCS/CTN


1. all parameters not specially mentioned are measured at110V &277VAC input , rated load

and 25℃of ambient temperature.

2..Tolerance:includes set us tolerance,line regulation and load regulation.

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■Mechanical specification

300 watt led power supply

1.0 version: SMT-012-300VTHJ / SMT-024-288VTHJ

300 watt led power supply

2.0 version: SMT-012-300VTHJV2 / SMT-024-288VTHJV2

300 watt led power supply

3.0 version: SMT-012-300VTHJWV2 / SMT-024-288VTHJWV2

※Input:18AWG black and white to be connected to ac l and n ,Green wire go ground,

※Output wire: 16AWG , red is(DIM+),Black is(DIM-)

※Class 2 standard output terminal. three groups of cables for SMT-012-300VTHJ / SMT-012-300VTHJV2 / SMT-012-300VTHJWV2 ; two groups for SMT-024-288VTHJ/ SMT-024-288VTHJV2 / SMT-024-288VTHJWV2

■Dimming operation

※The Pulse-Width modulation (PWM) of output voltage can be adjusted through input terminal of the ac phase line(L) by connection a phase/triac dimmer.

※Usually matching with forward phase , leading edge , magnetic low voltage, triac dimmers, or reverse phase, trailing edge ,Electric low voltage Dimmers.

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

■Derating curve

300 watt led power supply

※To extend their life, please refer to the derating curve and derate according to the temperature.

■ connecting diagram

300 watt led power supply

300 watt led power supply

. 300 watt led power supply

■ simple connection Diagram:

300 watt led power supply

■ 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;

※If the dimmable led drivers do not work normally, pl. don’t maintain privately, but contact us: or take a phonecall: 0086-18016688251

official website: and

compatible lights type

the triac dimmable transformer constant voltage led driverhas three versions for choosing. 24V is also provided. compatible with all12v led lights and the highest reach 300w. AQ lighting dimmable led bar is suggested in principle.

triac dimmable transformer constant voltage LED driver

related products

12v dc led power supply

The 12v dc led power supplyis dimmed by 0 10V. The output wattage is 80w. IP67 aluminum casefor outdoor using.

intput voltage:100~65VAC
size : 200*68.5*45mm
certificaiton: ETL/CE/ROHS approval

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