Greenpower Commercial Contactor Box - 24 Way - Multi-Room HID Lighting Control
Best for: commercial or multi-room growers running large numbers of HID lights who need one central, safely rated unit to control timing across the whole operation.
Our thoughts
This is proper commercial gear, not a scaled-up version of a domestic timer. Running two dozen HID lights off standard plug timers is asking for trouble - the switching contacts just aren't built for that kind of inductive load, repeatedly, for years. A dedicated contactor box like this is the safer, more sensible way to do it at scale, and the UK assembly and heavy-duty cabling give it the reliability a commercial setup actually needs.
The Greenpower Commercial Contactor Box is a 24-way lighting control unit built to safely switch large numbers of HID grow lights from a single timer clock, rather than relying on multiple domestic timers that aren't rated for sustained inductive loads. It's assembled in the UK, housed in a tough metal box with wall-fixing points, and uses heavy-duty compounds and extra-thick cabling throughout for long-term reliability under continuous commercial use.
Each of the 24 lighting sockets is switchable individually so you can isolate a single light without affecting the rest of the room, and the unit also includes additional non-timed auxiliary sockets, hard-wired onto the unit, for running fans, heaters, humidifiers or other equipment that you don't want tied to the lighting schedule. A built-in 24-hour timer runs the schedule automatically, with a manual override switch on the clock face for permanent on or permanent off. Note: this listing's title states 4 auxiliary sockets; if you need the exact aux socket count confirmed before ordering, check with us first as the product handle on this listing references a different figure.
How it compares
A 24-way commercial contactor box is built for a different scale of operation than a domestic timer or a small 6-way unit.
- Standard domestic plug timers aren't rated for the sustained inductive load of HID ballasts and will fail or degrade quickly under commercial use.
- Green Power's own smaller Pro Contactor Timers (such as the 6-way) suit single-room setups; the 24-way steps that same switching reliability up to a multi-room commercial scale.
- Building your own bank of individual heavy-duty timer-and-contactor units per light is possible but far less tidy and harder to manage centrally than one 24-way box.
For anyone running a genuinely large HID lighting setup, a dedicated commercial contactor box is the safer and more manageable route than stacking smaller units.
Usage guidance
This is mains electrical equipment for a commercial-scale grow room, so installation should be done properly and safely.
Mounting
The metal housing has fixing points so it can be wall-mounted, keeping cabling tidy and the unit out of the way in a busy grow space.
Wiring in lights
Each of the 24 sockets is switchable individually, letting you turn off a single faulty or unused light without disrupting the schedule for the rest of the room.
Setting the timer
The built-in 24-hour timer runs the lighting schedule automatically; use the override switch on the clock face if you need to force the whole bank permanently on or off.
Auxiliary equipment
Use the non-timed auxiliary sockets for fans, heaters or humidifiers that need to run independently of the lighting schedule.
Installation
Given the scale of current involved, have this installed and wired by a qualified electrician rather than a DIY setup.
Technical specifications
- Lighting capacity: 24 x switchable sockets, rated for HID lighting up to 600W per light
- Auxiliary sockets: Non-timed sockets for fans, heaters or humidifiers (check exact count with us before ordering)
- Timer: Built-in 24-hour timer with manual permanent on/off override
- Construction: UK-assembled, heavy-duty compounds, tough metal housing
- Cabling: Extra-thick, rubberised cabling to resist degradation
- Mounting: Wall-fixing points included
- Standards: Built to C.E standards
- Warranty: Manufacturer's guarantee (check current term with us at time of purchase)
Who this is for
- Commercial growers or multi-room operations running large numbers of HID lights
- Anyone currently relying on multiple domestic timers for HID loads and looking to consolidate onto properly rated equipment
- Growers who need centralised control with the ability to isolate individual lights
- Operations that also need non-timed sockets for climate control equipment alongside their lighting bank
This is a commercial-scale purchase - for a single tent or small room, a smaller Green Power contactor timer will do the job at a much lower cost.
Our take
This is the kind of purchase you make once you've outgrown domestic timers and need equipment built for continuous commercial duty. The individual socket switching and separate auxiliary sockets are genuinely useful for day-to-day running, not just a spec sheet feature.
Proper kit for a serious operation. Worth the investment if you're running a lighting bank at this scale rather than trying to patch it together with smaller units.
