Safely control the day and night settings of 2 to 28 HID hydroponic grow lights with UK built Green Power lighting controllers.
Up to 28 lights can be controlled from 1 GreenPower Lighting Contactor.
These robust contactors control the ‘on’ and ‘off’ periods of lights and fans without wires trailing and without risk of your timer burning-out.
Contactors are essential for growers wanting to automate grow light on and off periods because standard timers can’t handle the electrical surge of HPS and HID lights used for plants.
Each of the contactor’s sockets is individually switchable, so you don’t need to run all the grow lights all the time.
Every aspect of GreenPower Contactors is designed with safety and reliability in mind…
The GreenPower contactors for 12 to 28 lights are even more robust.
These are heavy duty contactors which send power to the ballasts bank-by-bank to avoid big surges and they feature…
Note: Commercial units must be hardwired by a qualified electrician.
Why use a Contactor?
Plants need a period of darkness, so most growers set a timer to turn their grow lights on and off at specific times. The HPS and HiD grow lamps generate a large spike in electricity when switching on.
Without a contactor this electrical spike travels through the timer and is enough to cause the timer to burn-out, leaving the grow lights in the on or off position until you manually switch them.
With a contactor the power goes through the robust switching components of the contactor. The surge doesn’t go through the timer itself, so there’s no risk of burn-out.
How It Works
Questions & Answers
Can I use a grow light contactor with an extension lead?
We advise you do NOT run a contactor from an extension lead. Likewise we advise you do NOT run an extension from a contactor socket. Both these actions are unsafe as they are likely to lead to overloading.
Why do some of your contactors have 2 plugs?
The contactors have 2 plugs because UK mains plugs have a maximum safe draw of 13 amps. A 1000W ballast can require around 5 amps, therefore to safely draw enough power for more than 2 x 1000watt lights (10 amps) you need to use more than one wall socket.
I have a spare socket in my contactor, what can I use it for?
If your grow room is too warm you could plug a fan into the spare socket. The fan will run when the lights are on and keep the temperature down and the air flowing.
Can I run a combination of ballast sizes from one contactor?
Yes, as long as you do not exceed the maximum load. Add up the total wattage of the ballasts you plan to use and check the guide above. Due to the variances in different ballasts you should also ensure that the total current requirement on one side does not exceed 13 amps.