These are cheap but can suffer from mechanical problems, arcing, and you have to route the heavy cables through the passenger compartment near the driver to make it work. A separate line had to be run for the alternator field to kill that. This was the $25-50 solution that was a mechanical switch wired in-line with the battery and when rotated or switched it would shut off power from the battery.
#CARTEK GT BATTERY ISOLATOR SERIES#
In the 1960s there was the traditional main power "rotary switch" that was popular - and still legal to use in some series up to this day. This switch is there to quickly shut off all power from the battery (and kill the alternator) when something goes wrong - after a crash, during a fire, or if something goes wrong enough to require the electrical power to be shut off and isolated completely. For drag racers it is usually placed at the rear of the vehicle, as shown below.įor W2W cars the switch needs to be within reach of the driver and corner worker, so this presents a few challenges for mounting (see options below). OLD SCHOOL MECHANICAL MASTER KILL SWITCHESĪll Wheel to Wheel road race cars and even most Drag Race cars have to incorporate a battery isolator or "main battery kill" switch somewhere on the vehicle.
Both of these types of systems contain mechanical electrical contacts which, due to the combination of high electrical current and the shocks and vibration of the race car environment, sparking between the contacts occurs which results in contact erosion and eventual unreliability. This forum entry will explain the various forms of battery kill switches used in Motorsports over the past several decades.ĬARTEK Motorsport Electronics GT Kill Switch UnitĮarly types of electrical isolation were by large mechanical master-switches while more modern systems have utilized electro-mechanical solenoids. These can be used in place of clunky old rotary kill switches or even remote solenoid battery disconnects. We immediately ordered inventory of their GT solid-state Kill Switch boxes, shown below. After using some of their battery isolators on builds in our shop, Vorshlag became a dealer for CARTEK Motorsports Electronics in early 2018.
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