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Mean Well

Mean Well PWM-120-48DA Power Supply 120W 48V - DALI

PWM style output, fully isolated plastic case, IP67, Class II design without FG, DALI
SKU:
PWM-120-48DA
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Description

Features

Universal AC input (up to 305VAC) / Full range
Constant voltage PWM style output
Built-in active PFC function
High efficiency up to 90.5%
No load power consumption <0.5W
Protections: Short circuit / Overload / Over voltage / Over temperature
Fully isolated plastic case
Fully encapsulated with IP67 level
Class 2 power unit
Isolation class II, no F.G.
Built-in 3 in 1 dimming (dim-to-off);DALI
Suitable for dry, damp and wet location
Suitable for LED strip lighting
5 years warranty

General Specification 

AC input voltage range 90~305VAC ; 127~431VDC
AC inrush current (max.) Cold start, 60A at 230VAC
Overload protection 108%~120% hiccup mode, auto-recovery
Over voltage protection Shut down o/p voltage, re-power on to recover
Over temp. protection Shut down output voltage, re-power on to recover
Setup, rise, hold up time 500ms, 80ms, 16ms at full load and 230VAC
Withstand voltage I/P-O/P: 3.75kVAC
Working temperature -40~+90ºC (refer to output derating curve)
Safety standards UL8750, CSA C22.2 No.250.13-12,ENEC EN61347-1, EN61347-2-13 independent, EN62384 approved ; Design refer to EN60335-1
EMC standards EN55015, EN61000-3-2 class C, EN61000-3-3, EN61000-4-2, 3, 4, 5, 6, 8, 11, EN61547
Connection Input UL rated, SJTW 18AWGx3C (30cm)
Connection Output SJTW 14AWG x2C (30cm)+UL24645 18AWG x2C (30cm)
Dimension (LxWxH) (mm) 191x63x 37.5
Packing 15pcs / 15.6kg

Specifications
  • Brand
    Mean Well
  • Series
    PWM Series
  • Power Rating
    120 Watt
  • Output Voltage
    48 Volt
  • Rated Current
    2.5 Ampere
  • Input Voltage
    90V~305V
  • Standards Met
    CB,CCC,CE,EAC,ENEC,UL
  • Operation Mode
    Constant Voltage
  • Operating Temperature
    -40°C~90°C
  • Warranty
    5 Year
  • Length
    19.1 cm
  • Width
    6.3 cm
  • Height
    3.75 cm
  • Weight
    0.97 kg

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::specification::

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Frequently Asked Questions

Can the PWM-120-48DA be controlled by a DALI building automation system?

Yes. The PWM-120-48DA has a DALI interface that allows it to be individually addressed and dimmed by any IEC 62386-compliant DALI controller or building management system. This makes it a standard choice for commercial 48V LED installations requiring centralised control.

Is the PWM-120-48DA waterproof enough for outdoor use?

Yes. The IP67 rating certifies protection against dust and temporary submersion up to 1 metre, making it suitable for outdoor signage cabinets, building facade lighting, and covered wet-area installations. Operating temperature range is -40°C to +90°C.

How many meters of 48V LED strip can the PWM-120-48DA power?

The driver supplies up to 120W at 48V and 2.5A. To find the maximum strip length, divide 120W by the strip's rated watt-per-meter figure — a 15 W/m strip, for example, allows up to 8 m. Confirm your strip's rated power per meter before planning the run.

Is the PWM-120-48DA suitable for DALI-controlled museum or gallery display lighting at 48V?

Yes. Museum and gallery lighting often requires precise, programmable dimming scenes, which DALI supports natively. The PWM-120-48DA's DALI interface integrates into such systems, and the PWM-style output produces smooth, artifact-free dimming on 48V LED strips.

Can I use the PWM-120-48DA in a DALI Zone controlling multiple fixtures?

Yes. DALI allows up to 64 individually addressed devices per bus, and the PWM-120-48DA is DALI-addressable. Multiple drivers can operate in the same DALI zone while responding to individual addressing or group commands from the controller.

What is the key difference between the PWM-120-48DA and PWM-120-48?

Both are 120W, 48V, 2.5A drivers with IP67 rating and identical physical dimensions. The PWM-120-48 uses built-in 3-in-1 dimming (PWM signal, 0–10V, resistance); the PWM-120-48DA replaces that with a DALI interface for addressable DALI network integration.

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Mean Well PWM-120-48DA Power Supply 120W 48V - DALI
Mean Well

Mean Well PWM-120-48DA Power Supply 120W 48V - DALI

Please for Pricing

Features

Universal AC input (up to 305VAC) / Full range
Constant voltage PWM style output
Built-in active PFC function
High efficiency up to 90.5%
No load power consumption <0.5W
Protections: Short circuit / Overload / Over voltage / Over temperature
Fully isolated plastic case
Fully encapsulated with IP67 level
Class 2 power unit
Isolation class II, no F.G.
Built-in 3 in 1 dimming (dim-to-off);DALI
Suitable for dry, damp and wet location
Suitable for LED strip lighting
5 years warranty

General Specification 

AC input voltage range 90~305VAC ; 127~431VDC
AC inrush current (max.) Cold start, 60A at 230VAC
Overload protection 108%~120% hiccup mode, auto-recovery
Over voltage protection Shut down o/p voltage, re-power on to recover
Over temp. protection Shut down output voltage, re-power on to recover
Setup, rise, hold up time 500ms, 80ms, 16ms at full load and 230VAC
Withstand voltage I/P-O/P: 3.75kVAC
Working temperature -40~+90ºC (refer to output derating curve)
Safety standards UL8750, CSA C22.2 No.250.13-12,ENEC EN61347-1, EN61347-2-13 independent, EN62384 approved ; Design refer to EN60335-1
EMC standards EN55015, EN61000-3-2 class C, EN61000-3-3, EN61000-4-2, 3, 4, 5, 6, 8, 11, EN61547
Connection Input UL rated, SJTW 18AWGx3C (30cm)
Connection Output SJTW 14AWG x2C (30cm)+UL24645 18AWG x2C (30cm)
Dimension (LxWxH) (mm) 191x63x 37.5
Packing 15pcs / 15.6kg
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