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      Power Supply 12v 40w

      (5016 products available)

      CZINELIGHT Indoor 1A 2A 3A 5A 10A 20A 30A 40A 50A 5V 12V 24V 36V 48V LED Strip Light CCTV Switching Power Supply

      CZINELIGHT Indoor 1A 2A 3A 5A 10A 20A 30A 40A 50A 5V 12V 24V 36V 48V LED Strip Light CCTV Switching Power Supply

      $2.90 - $6.99
      Min Order: 5 pieces
      Output Voltage: 12V
      CN
      3 yrsverify
      4.8
      /5
      ·
      121 reviews
      ·
      "good customer service"
      Contact Supplier
      Top sponsor listing
      MEAN WELL HLG Series LED Driver 40/60/80/100/120/150/185/240/320/480/600W Dimmable 12V 24V LED Switching Power Supply

      MEAN WELL HLG Series LED Driver 40/60/80/100/120/150/185/240/320/480/600W Dimmable 12V 24V LED Switching Power Supply

      $9.90
      Min Order: 5 pieces
      Shipping per piece: $40.25
      CN
      1 yrs
      5.0
      /5
      ·
      2 reviews
      ·
      Contact Supplier
      ad
      High Quality LED Display 5v 60A 300w Switching Power Supply For LED Display

      High Quality LED Display 5v 60A 300w Switching Power Supply For LED Display

      Ready to Ship
      $9.50 - $11.50
      Min Order: 5 pieces
      Shipping per piece: $5.85
      CN
      5 yrs
      0.0
      /5
      ·
      0 reviews
      ·
      "Great job"
      Contact Supplier
      ad
      300w IP67 LED Power Supply

      300w IP67 LED Power Supply

      $1.50 - $20.00
      Min Order: 1 piece
      CN
      15 yrs
      5.0
      /5
      ·
      1 reviews
      ·
      Contact Supplier
      ad
      MWISH S-1500--24 Industrial Switch Mode Power Supply 1500W Smps 12V 24V 36V 48V 30A 40A 60A 120A LED Transformer Driver

      MWISH S-1500--24 Industrial Switch Mode Power Supply 1500W Smps 12V 24V 36V 48V 30A 40A 60A 120A LED Transformer Driver

      $61.80
      Min Order: 5 pieces
      Output Voltage: 24V
      CN
      1 yrsverify
      0.0
      /5
      ·
      0 reviews
      ·
      "fast delivery"
      Contact Supplier
      ad
      100w 200w 300w 400w Indoor Outdoor 10a 20a 30a 40a Ac-dc Switching 12 24 Volt Dc Power Supply 400w

      100w 200w 300w 400w Indoor Outdoor 10a 20a 30a 40a Ac-dc Switching 12 24 Volt Dc Power Supply 400w

      $2.00 - $4.50
      Min Order: 10 pieces
      Output Power: 301 - 400W
      CN
      7 yrs
      5.0
      /5
      ·
      16 reviews
      ·
      "great service"
      Contact Supplier
      ad
      12v 24v 36v 48v Dimmable Led Driver Power Supply 20w 40w 60w Constant Voltage Ultra-thin Led Driver For Led Panel Light

      12v 24v 36v 48v Dimmable Led Driver Power Supply 20w 40w 60w Constant Voltage Ultra-thin Led Driver For Led Panel Light

      $3.78 - $14.68
      Min Order: 2 pieces
      Warranty(Year): 5-Year
      Lighting Solutions Service: Lighting And Circuitry Design
      CN
      12 yrsverify
      4.9
      /5
      ·
      23 reviews
      ·
      "good service"
      Contact Supplier
      Customized PCBA assembly board 5v 12v 15v 20v 24v 36v 48v 24w 30w 40w 50w 60w 100w 120w 150w 200w 400W 500W switch power supply

      Customized PCBA assembly board 5v 12v 15v 20v 24v 36v 48v 24w 30w 40w 50w 60w 100w 120w 150w 200w 400W 500W switch power supply

      $22.00 - $25.00
      Min Order: 1000 pieces
      Output Power: 301 - 400W
      CN
      14 yrsverify
      5.0
      /5
      ·
      14 reviews
      ·
      "Fast delivery"
      Contact Supplier
      CE Rohs single output 1200w 12v 100Amp High Power 100A 200/260VAC maximun power supply

      CE Rohs single output 1200w 12v 100Amp High Power 100A 200/260VAC maximun power supply

      $185.00 - $195.00
      Min Order: 1 piece
      CN
      17 yrsverify
      4.8
      /5
      ·
      16 reviews
      ·
      "excellent customer service"
      Contact Supplier
      IP20 100-240Vac linear 12V 24v dc power supply CE ROHS listed 20W 30W 40W 50W 60W LED power transformer

      IP20 100-240Vac linear 12V 24v dc power supply CE ROHS listed 20W 30W 40W 50W 60W LED power transformer

      $4.95 - $8.15
      Min Order: 1 piece
      CN
      11 yrsverify
      5.0
      /5
      ·
      24 reviews
      ·
      "good customer support"
      Contact Supplier
      MEANWELL XLG Waterproof LED Driver 8w12w 16w 25w 35w 40w 50w 75w 100w 150w 200w 240w 300w 12v 24v LED Power Supply

      MEANWELL XLG Waterproof LED Driver 8w12w 16w 25w 35w 40w 50w 75w 100w 150w 200w 240w 300w 12v 24v LED Power Supply

      $9.10 - $61.90
      Min Order: 1 piece
      CN
      5 yrsverify
      4.8
      /5
      ·
      36 reviews
      ·
      "Great service"
      Contact Supplier
      600W 500W 400W 300W 200W 150W 100W 60W 40W 30W 20W 10W 110V 220V CE waterproof led power supply 12V 24V ip67 led driver

      600W 500W 400W 300W 200W 150W 100W 60W 40W 30W 20W 10W 110V 220V CE waterproof led power supply 12V 24V ip67 led driver

      $2.32 - $2.93
      Min Order: 10 pieces
      Warranty(Year): 5-Year
      Lighting Solutions Service: Lighting And Circuitry Design
      CN
      5 yrsverify
      4.9
      /5
      ·
      16 reviews
      ·
      "Nice service"
      Contact Supplier
      Mean Well H-L-G 40W 60W 100W 150W 15V 12V 24V 48V Constant Voltage dimming IP67 waterproof Led Strip Driver Power Supply

      Mean Well H-L-G 40W 60W 100W 150W 15V 12V 24V 48V Constant Voltage dimming IP67 waterproof Led Strip Driver Power Supply

      $18.90 - $38.40
      Min Order: 5 pieces
      CN
      2 yrsverify
      4.4
      /5
      ·
      7 reviews
      ·
      "Great service"
      Contact Supplier
      miTEC Lithium 40W Din Rail Uninterruptible Power Supply with Built in 18650 Battery UPS Security CCTV Power

      miTEC Lithium 40W Din Rail Uninterruptible Power Supply with Built in 18650 Battery UPS Security CCTV Power

      $15.00 - $19.00
      Min Order: 10 pieces
      HK
      1 yrs
      5.0
      /5
      ·
      2 reviews
      ·
      "quick order"
      Contact Supplier
      UL CE RoHS FCC PSE 240w 200w 180w 150w 48v 36v 19v 15v 12v 24v 8a 8.3a 7.5a 10a 15a 20a 24v power supply 24v 10a ac dc adapter

      UL CE RoHS FCC PSE 240w 200w 180w 150w 48v 36v 19v 15v 12v 24v 8a 8.3a 7.5a 10a 15a 20a 24v power supply 24v 10a ac dc adapter

      $14.50 - $26.50
      Min Order: 100 pieces
      CN
      17 yrsverify
      4.7
      /5
      ·
      7 reviews
      ·
      "Excellent work"
      Contact Supplier
      slim light power driver DC12v/24v 1A 2A 5A 10A 20A Switching Power Supply 12W 24W 40W 60W 100W Led Driver 12v Led Power Supply

      slim light power driver DC12v/24v 1A 2A 5A 10A 20A Switching Power Supply 12W 24W 40W 60W 100W Led Driver 12v Led Power Supply

      $0.16 - $1.30
      Min Order: 1 piece
      CN
      2 yrsverify
      4.9
      /5
      ·
      11 reviews
      ·
      "excellent delivery"
      Contact Supplier
      Ultra thin 12V 24V 10W 15W 20W 36W 40W 50W 60W 75W 100w 120W 150w 200w 300w 400w slim led switching waterproof power supply

      Ultra thin 12V 24V 10W 15W 20W 36W 40W 50W 60W 75W 100w 120W 150w 200w 300w 400w slim led switching waterproof power supply

      $1.66 - $2.00
      Min Order: 10 pieces
      CN
      3 yrsverify
      4.8
      /5
      ·
      59 reviews
      ·
      "good service"
      Contact Supplier
      110V 220V AC DC LED Power Supply 18W 20W 40W 50W 60W Adaptor Transformer 9v 12v 24v 2a 2.5a 3a Wall Mount Power Adapter

      110V 220V AC DC LED Power Supply 18W 20W 40W 50W 60W Adaptor Transformer 9v 12v 24v 2a 2.5a 3a Wall Mount Power Adapter

      $2.65 - $3.10
      Min Order: 500 pieces
      CN
      4 yrsverify
      5.0
      /5
      ·
      1 reviews
      ·
      "great company"
      Contact Supplier
      MEAN WELL LED Power Supply 40W 50W 80W 100W 150W 240W 300w 400W 600W 12V 24V IP67 Waterproof LED Drivers

      MEAN WELL LED Power Supply 40W 50W 80W 100W 150W 240W 300w 400W 600W 12V 24V IP67 Waterproof LED Drivers

      $3.90 - $45.60
      Min Order: 1 piece
      Warranty(Year): 5-Year
      Lighting Solutions Service: Lighting And Circuitry Design
      CN
      9 yrsverify
      4.9
      /5
      ·
      57 reviews
      ·
      "fast delivery"
      Contact Supplier
      waterproof MSD-MV040 40W 24v power supply constant voltage 12v light led driver

      waterproof MSD-MV040 40W 24v power supply constant voltage 12v light led driver

      $4.80 - $6.50
      Min Order: 1 piece
      Warranty(Year): 5-Year
      Lighting Solutions Service: Lighting And Circuitry Design
      CN
      13 yrsverify
      5.0
      /5
      ·
      4 reviews
      ·
      "Excellent service"
      Contact Supplier
      din rail power supply 24v 60w HDR-60W-24V AC/DC for Complete set of equipment with CE and RoHS 48v power supply 12v 30a

      din rail power supply 24v 60w HDR-60W-24V AC/DC for Complete set of equipment with CE and RoHS 48v power supply 12v 30a

      $5.10 - $6.86
      Min Order: 5 pieces
      Output Voltage: 24V
      CN
      2 yrsverify
      5.0
      /5
      ·
      3 reviews
      ·
      "Great service"
      Contact Supplier
      TURE FULL LED New Design Power Supply 40W 50W 80W 100W 150W 240W 300w 400W 600W 12V 24V IP67 Waterproof LED Drivers

      TURE FULL LED New Design Power Supply 40W 50W 80W 100W 150W 240W 300w 400W 600W 12V 24V IP67 Waterproof LED Drivers

      Ready to Ship
      $11.50 - $12.00
      Min Order: 10 pieces
      Shipping per piece: $13.71
      Warranty(Year): 5-Year
      Lighting Solutions Service: Lighting And Circuitry Design
      CN
      7 yrsverify
      0.0
      /5
      ·
      0 reviews
      ·
      "excellent customer service"
      Contact Supplier
      Power Supply Dc Meanwell GST-40-12-P1J GST-60-12-P1J 40W 60W 90W 120W 160W 220W 280WGreen Industrial Desktop AC DC Power Adaptor

      Power Supply Dc Meanwell GST-40-12-P1J GST-60-12-P1J 40W 60W 90W 120W 160W 220W 280WGreen Industrial Desktop AC DC Power Adaptor

      $8.40 - $10.40
      Min Order: 5 pieces
      Output Voltage: 12V
      CN
      1 yrsverify
      0.0
      /5
      ·
      0 reviews
      ·
      Contact Supplier
      Meanwell MDR-40-12 12V 3.33A 40W Mean Well DIN Rail Switching Power Supply For Automation Industrial

      Meanwell MDR-40-12 12V 3.33A 40W Mean Well DIN Rail Switching Power Supply For Automation Industrial

      $11.43 - $14.67
      Min Order: 5 pieces
      Output Voltage: 12V
      CN
      2 yrsverify
      4.9
      /5
      ·
      16 reviews
      ·
      "Timely delivery"
      Contact Supplier
      Original MEAN WELL 40W to 600W HLG series HLG-600H-12A 12V 40A LED power supply 7 years warranty

      Original MEAN WELL 40W to 600W HLG series HLG-600H-12A 12V 40A LED power supply 7 years warranty

      $110.00 - $140.00
      Min Order: 1 piece
      Output Voltage: 12V
      CN
      12 yrsverify
      4.8
      /5
      ·
      35 reviews
      ·
      "amazing service"
      Contact Supplier
      Meanwell Power Supply MDR-60-24 40W 100W 24V 48V Din Rail Industrial 12V Switching Power Supplies

      Meanwell Power Supply MDR-60-24 40W 100W 24V 48V Din Rail Industrial 12V Switching Power Supplies

      Ready to Ship
      $8.10 - $9.80
      Min Order: 1 piece
      Shipping per piece: $16.16
      CN
      8 yrsverify
      4.8
      /5
      ·
      37 reviews
      ·
      "responsive supplier"
      Contact Supplier
      AC DC Adapter DC 12V 1A AC100-240V Converter Adaptor Charger EU Plug Black for CCTV Camera LED String Light Driver Power Supply

      AC DC Adapter DC 12V 1A AC100-240V Converter Adaptor Charger EU Plug Black for CCTV Camera LED String Light Driver Power Supply

      $1.95 - $3.85
      Min Order: 100 pieces
      Type: Electrical Charger
      Port: Dc
      CN
      20 yrs
      4.9
      /5
      ·
      7 reviews
      ·
      "On time shipping"
      Contact Supplier
      Hot sale smps 12v 3.2a led lighting transformer 40w switching power supply

      Hot sale smps 12v 3.2a led lighting transformer 40w switching power supply

      $3.07 - $3.57
      Min Order: 2 pieces
      CN
      8 yrsverify
      4.9
      /5
      ·
      33 reviews
      ·
      "professional service"
      Contact Supplier
      CE 40W 12V 3.5A Constant Voltage Switching Mode Power Supply for LED Lighting LED Driver

      CE 40W 12V 3.5A Constant Voltage Switching Mode Power Supply for LED Lighting LED Driver

      $6.96 - $6.98
      Min Order: 1 piece
      CN
      5 yrs
      5.0
      /5
      ·
      2 reviews
      ·
      "good supplier"
      Contact Supplier
      40W led power supply 12V 3340ma Smart control thin LED driver for cabinet liglhting

      40W led power supply 12V 3340ma Smart control thin LED driver for cabinet liglhting

      $8.83 - $9.27
      Min Order: 500 pieces
      Warranty(Year): 3-Year
      CN
      7 yrsverify
      5.0
      /5
      ·
      4 reviews
      ·
      "arrived on time"
      Contact Supplier
      40w IP67 LED driver CE ROHS approved ac dc adapter 110/220v dc 12v 24v led power supply

      40w IP67 LED driver CE ROHS approved ac dc adapter 110/220v dc 12v 24v led power supply

      $3.94 - $4.10
      Min Order: 1 piece
      Warranty(Year): 3-Year
      Lighting Solutions Service: Lighting And Circuitry Design
      CN
      6 yrs
      0.0
      /5
      ·
      0 reviews
      ·
      "good service"
      Contact Supplier
      MDR-40-24 Din rail mounting 220vac to 24vdc 40w power supply for industtial usage

      MDR-40-24 Din rail mounting 220vac to 24vdc 40w power supply for industtial usage

      $9.50 - $10.00
      Min Order: 5 pieces
      CN
      17 yrs
      5.0
      /5
      ·
      2 reviews
      ·
      Contact Supplier
      class 2 constant voltage Led driver Slim power supply 12v 24v 40w 50w 60w IP44

      class 2 constant voltage Led driver Slim power supply 12v 24v 40w 50w 60w IP44

      $4.00 - $8.00
      Min Order: 1 piece
      Warranty(Year): 2-Year
      Lighting Solutions Service: Lighting And Circuitry Design
      CN
      14 yrs
      5.0
      /5
      ·
      11 reviews
      ·
      "excellent service"
      Contact Supplier
      hs code switch 220vac to 110vdc power 48V to 12V 3.3A 40W open frame power supply for led lighting

      hs code switch 220vac to 110vdc power 48V to 12V 3.3A 40W open frame power supply for led lighting

      $3.50 - $4.60
      Min Order: 100 pieces
      Output Voltage: 12V
      Output Power: 1 - 50W
      CN
      14 yrs
      5.0
      /5
      ·
      5 reviews
      ·
      "Good job"
      Contact Supplier
      Mean well DRC-40A 40w 12v uninterruptible power supply 40W 12V UPS power supply

      Mean well DRC-40A 40w 12v uninterruptible power supply 40W 12V UPS power supply

      $12.00 - $22.00
      Min Order: 5 pieces
      CN
      12 yrs
      4.0
      /5
      ·
      2 reviews
      ·
      "Excellent Service"
      Contact Supplier
      12v 24v Dc 10a 20a 30a 40a 50a 60a Ac Dc Led Switch Power Supply

      12v 24v Dc 10a 20a 30a 40a 50a 60a Ac Dc Led Switch Power Supply

      $5.00 - $10.00
      Min Order: 50 pieces
      Warranty(Year): 3-Year
      Lighting Solutions Service: Lighting And Circuitry Design
      CN
      13 yrsverify
      4.9
      /5
      ·
      101 reviews
      ·
      "excellent customer service"
      Contact Supplier
      AC 220V DC 12V 2A 24W Power Adapter EU UK US AU Plug AC DC Adaptor CE RoHS Wall Mount Power Supply

      AC 220V DC 12V 2A 24W Power Adapter EU UK US AU Plug AC DC Adaptor CE RoHS Wall Mount Power Supply

      $1.60 - $1.90
      Min Order: 10 pieces
      CN
      10 yrsverify
      4.9
      /5
      ·
      141 reviews
      ·
      "Excellent service"
      Contact Supplier
      12W 20W 30W 40W 60w round led driver constant current 12VDC 24VDC led power supply

      12W 20W 30W 40W 60w round led driver constant current 12VDC 24VDC led power supply

      $5.00 - $7.00
      Min Order: 1 piece
      CN
      15 yrs
      5.0
      /5
      ·
      1 reviews
      ·
      Contact Supplier
      YIDUN 40W 12V LED Driver Constant Voltage 220V AC DC Transformer Power Supply Switching LED Module 12V Constant Voltage 40W LED

      YIDUN 40W 12V LED Driver Constant Voltage 220V AC DC Transformer Power Supply Switching LED Module 12V Constant Voltage 40W LED

      $4.00 - $4.32
      Min Order: 100 pieces
      CN
      10 yrs
      5.0
      /5
      ·
      3 reviews
      ·
      "fast shipping"
      Contact Supplier
      40W Triac Dimmable LED Driver 12V Power supply

      40W Triac Dimmable LED Driver 12V Power supply

      $11.00
      Min Order: 50 pieces
      Warranty(Year): 10-Year
      Lighting Solutions Service: Lighting And Circuitry Design
      TW
      6 yrs
      0.0
      /5
      ·
      0 reviews
      ·
      Contact Supplier
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      About products and suppliers

      Manage your current and keep devices powered up with a switching power supply from the Alibaba.com wholesale store. Our store features switching power supplies from a wide network of industrial suppliers, with options for home users, offices and data centers alike. Find ways to switch between AC and DC power, manage multiple devices, and change seamlessly between voltages without damaging equipment. Every style of supply is catered for by Alibaba.com, so if you need a power supply 12v 40w you're in the right place.



      The switching power supply store at Alibaba.com covers all of the major types. You'll find AC to DC adapters, DC to AC versions, as well as DC to DC and frequency conversion modules. All of roughly the same goal in mind: to provide appropriate voltages for important devices. This could include computer networks and telecommunications devices, as well as machining centers, power tools, vehicle radios, sound systems and much more. Wherever voltages differ, a power supply 12v 40w will come in handy. So browse the entire range and find a switching supply to suit your equipment from Alibaba.com's wholesale store.



      When choosing a switching power supply from Alibaba.com, you'll find plenty of specific models. For instance, there are 12V DC supplies that are designed specifically for computers. And there are also 12V units that are intended for use with LED lighting arrays. They could be invaluable when crafting store displays or running entertainment venues. Take a look at high voltage switching power supplies for CCTV systems, models specifically intended for use by radio stations, or universal PSUs that can be used in a wider range of settings. Finding a power supply 12v 40w is quick and easy with Alibaba.com. Just search, browse and filter. In a few clicks you'll find the power supply required.



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