Grow light timer relay boxes and power distribution units switch the grow room lights through a relay that copes with inrush current, and spread the load over several sockets. In our range: Ekström 16 A and 32 A power distribution units with residual current device (RCD), a 400 V Timer Box and the GSE Timer Box 4x600 W and 12x600 W. Light hours are explained in the light schedule guide.
An ordinary plug-in timer has small contacts that are not designed for the inrush current of HPS ballasts and LED drivers at switch-on, and wears out quickly with several lights. In a timer box the timer drives a power relay that switches the lights' load onto separate sockets: the wiring is rated for the stated power, for example 4 lights of 600 W.
A Swiss T13 household socket is rated at 10 A: at 230 V that is about 2,300 W. For devices running many hours, stay below 80%, about 1,800 W, counting every device on the same circuit.
| Lights | Total power | Connection |
|---|---|---|
| 1 LED up to 600 W | up to 600 W | normal socket protected by an RCD |
| 2 lights of 600 W | 1,200 W | normal socket protected by an RCD, circuit without other heavy loads |
| 4 lights of 600 W | 2,400 W | above the 10 A of a T13: 16 A connection, to be checked by an electrician |
| 12 lights of 600 W | 7,200 W | dedicated circuit, usually three-phase 400 V: electrician only |
The section also includes the Trolmaster TSH-1 temperature/humidity station, to pair with the Trolmaster systems among the grow room controllers.
Prices are in Swiss francs including Swiss VAT. We ship throughout Switzerland with Swiss Post, and bulky parcels go by courier. For help with sizing timers and power distribution, ask the Gro.w.LaB team: contact us by email, call +41 79 359 67 58 or visit the shop in Quartino by appointment.
A 10 A T13 socket takes about 2,300 W; for continuous load stay below 1,800 W in total. Two 600 W lights are fine, four need a 16 A connection.
It is a distribution box with a timer and power relay that switches several lights on and off together. This protects the timer from inrush current at switch-on.
Yes: water and electricity share the same space. Only use sockets protected by a 30 mA RCD or a distribution unit with a built-in RCD.
18 hours of light and 6 of darkness for seedlings and veg, 12/12 for flowering photoperiod varieties. Autoflowers stay on 18/6 or 20/4.
