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12 Volt Outdoor Transformer 20w IP68

This 12v a/c waterproof transformer is for use with 12v Garden Lights with a maximum overall wattage of 20w. With a 3 pin UK plug attached to 1m of 3 core rubber waterproof cable it plugs into a 240v AC mains system then converts the current to 12v AC output through the transformer. These transformers are supplied complete with 0.6m of 2 core output cable, which connects to the transformer with a 2 pin plug. This 12V Lighting Range - making garden lighting easy.

This outdoor transformer is suitable for all lights designed for 12v Halogen bulbs and LED MR16 bulbs. Please note the output is A/C and therefore not suitable for some 12v LED systems.

  • Input:                    230v - 240v - 50Hz
  • Output:                12v AC 1670mA 20VA
  • Wattage:             20 watt
  • Input Cable:        3 core rubber waterproof 1m with 3 pin UK Plug
  • Output Cable:     2 core rubber waterproof 0.6m (detachable)
  • IP Rating:             IP68 (suitable for outdoor use - DO NOT SUBMERGE IN WATER)
  • Dimensions:       48mm (W) x 80mm (L) x 63mm (H)
  • Fixing Centres:   68mm x 35mm
  • Additional Info:   Thermal cut out (protects against power overload) / CE Certified. BS


Choosing the style of a product is only part of the equation you must also think of where that product will be used and how it will be installed. All exterior lighting products on our web site have an IP rating which is explained further in our design ideas section but in simple terms the IP rating is appropriate to each light fitting and its intended application and is therefore fit for purpose. Water ingress is the enemy for outdoor lighting and the products supplied are only as good as the installation as the weakest point is always cable and transformer joints.  All joints must be made 100% water tight and this can be done using heat shrink kits, waterproof junction boxes which are then filled with a resin mix. All joints where possible should be made above ground for easy access and reduced water ingress. When installing ground buried lights adequate drainage systems should be put in place especially in clay based soil areas. If possible use ground surface spike lights rather than a buried light.  The load on each transformer should ideally not go below 70 - 85 percent. We recommend no more than 10 fittings maximum per transformer and the unit can be placed up to 30 meters away from the fittings.

Item Specifications

IP rating: IP 68
watts: 20 Watt, 150 Watt, 10 Watt, 50 Watt, 100 Watt
Output cable: 0.6M, 1.0m, 3.0M, 5.0M