CONTACTOR 12 WAY (2 AUX)

Description

CONTACTOR 12 WAY (2 AUX) is the heavy-duty switching solution that serious UK grow room operators rely on to control multiple HID or LED circuits safely and efficiently. We have been recommending this 12-way contactor to UK growers since 2017, and it remains one of the most dependable pieces of electrical infrastructure you can install in a professional grow space.

Why a Contactor Is Essential for Your Grow Room

Running HID ballasts and high-wattage LED drivers directly from timers is a recipe for premature component failure. High-inrush lighting loads draw surge currents that far exceed the rated capacity of standard timer contacts, causing pitting and arcing over time. A contactor isolates your expensive control equipment from these surges by using a low-current coil signal to switch heavy-duty power contacts. The 12-way configuration means you can manage up to twelve independent circuits — lighting, extraction fans, irrigation pumps, CO2 solenoids — from a single, centralised switching unit. The two auxiliary contacts provide feedback signals for monitoring or interlocking purposes, making integration with environment controllers straightforward.

Installation, Sizing, and Compatibility

This contactor is rated for repeated switching of inductive and resistive loads, making it equally at home with magnetic ballasts, digital ballasts, LED drivers, and motor loads. The DIN-rail mount format suits standard electrical enclosures, keeping your grow room wiring organised and compliant. Wire the coil to your timer or controller output, connect your load circuits through the main contacts, and you have a robust, professional-grade switching solution. Always ensure your supply cabling is sized appropriately for the total connected load across all twelve ways. If you are building out a large commercial grow room or scaling up a tent farm, this 12-way unit eliminates the tangle of individual timers and reduces failure points significantly. Pair with a quality digital timer or Ecotechnics controller for full automation. Our team is happy to advise on load calculations and installation best practice — just ask in store or online.