Non-dimmable LED Driver

UL listed 100-277vac 24 volt dc 300w electronic power supply

UL listed Triac Dimmable Power Supply with PWM output with PWM output & High PF>0.99 & High efficiency>87%
  • item no.:

  • lead time:

    about 7 days for samples
  • product orgin:

  • brand:

  • shipping port:

    Xiamen Port
  • payment:

    T/T, Paypal, Western Union
  • market price:

  • Input Voltage:

    100-305v ac
  • Output Voltage:

    12V & 24V DC
  • Working Mode:

    Constant Voltage
  • Certification:

    UL CE Rohs
  • Warranty:

    7 Years Warranty
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product details

UL listed 100-277vac 24 volt 300w electronic power supply


Smarts Electronics offered 277vac power supply from 30watts to 300watts available with isolated circuits and overload protection.  With PWM output & High PF>0.99 & High efficiency>87%.

This series is an excellent quality UL/cUL Listed dimmable power supply. Compatible with most popular dimmer including Lutron, Leviton and most other household dimmers. Can be used for many LED lights and other applications. Requires no minimum load and it is very quite without any buzz or humming noise. 

Usually, we ship samples within 7 days. If you need samples urgently please contact us before ordering to insure that delivery meets your needs.


300w power supply


Specification for 300w power supply:





DC Voltage



Voltage Tolerance


Voltage Regulation


Voltage Tolerance


Load Regulation





Rated current



Rated power



Voltage Range


Frequency Range


Power Factor(Typ.)@ full load

0.98@120VAC  0.97@277VAC

0.98@120VAC  0.97@277VAC

THD(Typ.)@ full load


Inrush Current (Typ.)

20A, 50%, 1.4ms

Full Load




AC Current(Typ.)


Leakage current


Storage TEM.,Humidity





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

Y,Z axes


Compliance to EN55015,EN61000-3-2 (≥50%load) / FCC Part 15 B


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





278*108*46mm (L*W*H)



  Mechanical Specification for 24 volt dc power supply:

dimmabloe led driver


※Input:18AWG Black and White to be connected to AC L and N ,Green wire go ground,
※Output: Red is(DIM+),Black is(DIM-)UL 14AWG power cord 

Dimming Operation for electronic power supply:
※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.


Instruction for Smarts' 277vac dimmable led driver:

※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: 0086-595-27256889  

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We Offer All Kinds of LED Drivers Power Supplies for Your LED Lights
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