Green Power 3R 3-Way 1800 Watt Hobby Relay

Green Power 3R 3-Way 1800 Watt Hobby Relay

SKU: 113007
Green Power 3R 3-Way 1800 Watt Hobby Relay

Green Power 3R 3-Way Hobby Relay

The Green Power 3R enables you to safely switch 3 x 600 watt lights on and off simultaneously using a single (separately available) timer. Green Power units are made in the UK under license from Canatronics and meet their famous high standards of construction and manufacture.

  • Switches 3 x 600w HID lights on and off safely and reliably
  • Superb build quality – solid as a rock
  • Made in the UK under license from Canatronics to their exacting standards
  • Easy to use
  • Top quality components and construction
  • Built-in hanger for easy mounting
  • Robust metal exterior


1 x Green Power 3R 3-Way 1800 Watt Hobby Relay

Required but not supplied: 1 x timer

How the Green Power 3R Works:

When growing indoors, lighting will need to be switched on and off at consistent times to replicate the day and night cycles of the outside world. The problem is that most timers are not designed to cope with the kind of electrical draw associated with industry standard HID lighting. Though certain timers may be designed to handle larger draws, they can still only switch one light at a time.

Relays are designed to allow you to control the switching on and off of multiple high-output lights using a single timer. They do this by having 2 power cables – one supplies power and the other plugs into a (separately available) timer. The timer controls the lighting schedule, even though the power is being drawn through a separate cable. Because the load is drawn through a separate cable, a single timer can then be used to control multiple lights.

3 lights of up to 600 watts can be run by the Green Power Relay, and in any combination (e.g. 600w/400w/400w or 600w/250w/400w). Each power outlet is switchable, so that one light can be turned off easily even if the others are in operation. The built-in hanging bracket allows you to easily mount the unit on a wall or other suitable area, above waist height and well away from any liquids.

With a metal exterior, the Green Power Relay feels incredibly solid in your hands – these things really are built to last, meeting the exacting standards of the team at Canatronics, a company renowned for producing industry standard, tried and tested equipment. The manufacturers are so confident in the quality of the Green Power 3-Way Relay that it’s also guaranteed for two years.

How to Use the Green Power 3R:

The Green Power unit can be hung from a wall by the attached fixing bracket.

Up to 3 x 600w lights can then be plugged in to the power outlets on the main unit. For HID lighting, the ballast will be plugged into the relay and the lamp holder in the reflector will be connected to the ballast. HID lights of lower outputs can also be used with the Green Power 3-way with no problem as long as the total output does not exceed 1800 watts; for example, 600w/600w/400w or 400w/250w/400w.

One of the plugs on the end of the power cables will be marked with the word ‘timer’. Plug this cable into a separate timer and programme it according to the manufacturer’s instructions to switch on and off according to your desired schedule.

Once programmed, the timer can then be plugged into a mains socket, then plug the power cable marked ‘mains’ into separate mains socket. Both cables coming out of the bottom of the Green Power 3-Way should now be connected to the mains, one directly and one via the timer. Once turned on at the mains, the Green Power 3-Way will turn lighting on and off according to the schedule programmed into the timer.

Never plug multi-sockets into the relay or the relay into a multi socket! No more than 3 lights should be switched by the Green Power 3-Way 1800-Watt, nor should more than 1800 watts be drawn through it as this will cause the unit to be overloaded.

Although the Green Power 3R 3-Way 1800-Watt Hobby Relay can handle the switching of up to 1800 Watts, it is worth bearing in mind that traditional (non-digital) HID lighting ballasts draw a considerable surge at switch-on which is well in excess of their normal running wattage. There must be enough spare capacity on the mains circuit that the Green Power switching unit is plugged into to provide at least 8 amps continuously. 3 lighting ballasts being switched on simultaneously may cause the circuit breaker in your consumer unit to trip if that circuit is being run too close to its limit.