70w metal halide control gear the boxline metal halide control gear is a complete solution for metal halide display lighting from 35w to 150w the boxline includes thermally protected ballast encapsulated in resin a capacitor and a superimposed timed ignition to protect the lamp ballast and the person responsible for their maintenance the timed ignitron switches off the circuit if its unable to strike the lamp after 22 minutes it can only be reset if the power is turned off and then restore