Mean Well NLDD-H/LDDS-H Series
New in February 2021
To offer more SELV(Class III) DC input step-down LED drives for the promising market of the safety Low-voltage centralized bus, MEAN WELL has developed two direct current (DC) input LED drivers, NLDD-H and LDDS-H series. These two series can be applied to lighting equipment of 48V or 24V DC applications or used with lighting products for DC bus applications.
The compact size NLDD-H and LDDS-H series are step-down design, converting 48V DC input voltage into constant current output and then directly drive LED modules. With a variety of output currents model, including 250/300/350/500/700/1050/1200/1400 mA, they are suitable for commercial track lighting or office indoor lighting luminaires.
The NLDD series provides two ways of output connected, PIN style and wire style while LDDS-H series offers wire style only. Although it is a DC low-voltage application, MEAN WELL applies for CE and EAC certification, including compliance with lighting regulations EN61347/EAC TP TC 004 and EMC EN55015/EAC TP TC 020 and compliance with SELV and Class III luminaire regulations.
Series | PIN Style | Wire Style |
---|---|---|
NLDD-H (General application) | ![]() | ![]() |
LDDS-H (Commercial track lighting application) | N/A | ![]() |
Features Mean Well DC-DC LED Power Supply
- Wide DC input Voltage operation
- Wide output forward voltage design
- Constant current output design
- High efficiency up to 96%
- Protections: Over temperature/ Short circuit
- Compact size and Fully encapsulated
- 3 years warranty (NLDD-H) and 5 Years warranty (LDDS-H)
Application Mean Well NLDD-H/LDDS-H Series

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NLDD-350HW DC-DC Step down LED driver Constant Current (CC); Wide Input 10-56Vdc; Output 6-52Vdc at 0.35A; Wire style; PWM dimming and remote ON/OFFshow more show lessDC-DC Step down LED driver Constant Current (CC); Wide Input 10-56Vdc; Output 6-52Vdc at 0.35A; Wire style; PWM dimming and remote ON/OFF20 in stock
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NLDD-700HW DC-DC Step down LED driver Constant Current (CC); Wide Input 10-56Vdc; Output 6-52Vdc at 0.7A; Wire style; PWM dimming and remote ON/OFFshow more show lessDC-DC Step down LED driver Constant Current (CC); Wide Input 10-56Vdc; Output 6-52Vdc at 0.7A; Wire style; PWM dimming and remote ON/OFF19 in stock
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NLDD-700H DC-DC Step down LED driver Constant Current (CC); Wide Input 10-56Vdc; Output 6-52Vdc at 0.7A; Pin style with PCB mounting; PWM dimming and remote ON/OFFshow more show lessDC-DC Step down LED driver Constant Current (CC); Wide Input 10-56Vdc; Output 6-52Vdc at 0.7A; Pin style with PCB mounting; PWM dimming and remote ON/OFFStock available on request
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NLDD-500HW DC-DC Step down LED driver Constant Current (CC); Wide Input 10-56Vdc; Output 6-52Vdc at 0.5A; Wire style; PWM dimming and remote ON/OFFshow more show lessDC-DC Step down LED driver Constant Current (CC); Wide Input 10-56Vdc; Output 6-52Vdc at 0.5A; Wire style; PWM dimming and remote ON/OFFStock available on request
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NLDD-500H DC-DC Step down LED driver Constant Current (CC); Wide Input 10-56Vdc; Output 6-52Vdc at 0.5A; Pin style with PCB mounting; PWM dimming and remote ON/OFFshow more show lessDC-DC Step down LED driver Constant Current (CC); Wide Input 10-56Vdc; Output 6-52Vdc at 0.5A; Pin style with PCB mounting; PWM dimming and remote ON/OFFStock available on request
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NLDD-350H DC-DC Step down LED driver Constant Current (CC); Wide Input 10-56Vdc; Output 6-52Vdc at 0.35A; Pin style with PCB mounting; PWM dimming and remote ON/OFFshow more show lessDC-DC Step down LED driver Constant Current (CC); Wide Input 10-56Vdc; Output 6-52Vdc at 0.35A; Pin style with PCB mounting; PWM dimming and remote ON/OFFStock available on request
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NLDD-1400HW DC-DC Step down LED driver Constant Current (CC); Wide Input 10-56Vdc; Output 6-46Vdc at 1.4A; Wire style; PWM dimming and remote ON/OFFshow more show lessDC-DC Step down LED driver Constant Current (CC); Wide Input 10-56Vdc; Output 6-46Vdc at 1.4A; Wire style; PWM dimming and remote ON/OFFStock available on request
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NLDD-1400H DC-DC Step down LED driver Constant Current (CC); Wide Input 10-56Vdc; Output 6-46Vdc at 1.4A; Pin style with PCB mounting; PWM dimming and remote ON/OFFshow more show lessDC-DC Step down LED driver Constant Current (CC); Wide Input 10-56Vdc; Output 6-46Vdc at 1.4A; Pin style with PCB mounting; PWM dimming and remote ON/OFFStock available on request
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NLDD-1200HW DC-DC Step down LED driver Constant Current (CC); Wide Input 10-56Vdc; Output 6-46Vdc at 1.2A; Wire style; PWM dimming and remote ON/OFFshow more show lessDC-DC Step down LED driver Constant Current (CC); Wide Input 10-56Vdc; Output 6-46Vdc at 1.2A; Wire style; PWM dimming and remote ON/OFFStock available on request
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NLDD-1200H DC-DC Step down LED driver Constant Current (CC); Wide Input 10-56Vdc; Output 6-46Vdc at 1.2A; Pin style with PCB mounting; PWM dimming and remote ON/OFFshow more show lessDC-DC Step down LED driver Constant Current (CC); Wide Input 10-56Vdc; Output 6-46Vdc at 1.2A; Pin style with PCB mounting; PWM dimming and remote ON/OFFStock available on request
