Cartek Battery Isolator XR and Electronic Kill Switch


Small, highly reliable electronic alternative to kill switches.

SKU: CK-BR-08-B Category: Tag:


The Cartek Battery Isolator XR is the latest generation of motorsport master-switch  devices from CARTEK. At 30% smaller size and 40% lighter eight than the GT isolators, the XR version offers even more benefits and performance when compared with traditional mechanical master-switches and electro/mechanical safety cut-outs.


  • Fully electronic with no moving parts
  • Compatible with most motorsport ECUs
  • 0.5 second delay between engine kill signal and
    battery disconnection allowing time for ECU
    shutdown procedures
  • Totally sealed against water and dirt
  • Completely resistant to shock and vibration
  • Fully integrated with built in alternator run-down
    circuitry  – No extra components required
  • Driver operation by a single internal ON-OFF
  • External operation by single or multiple switches
  • Buttons / switches connected to Isolator using
    lightweight wiring and IP67 sealed connector
  • Mounts close to battery for reduced cabling
  • Very small and weighs just 70g
  • Designed and manufactured in UK using high quality

When fitted to a race car our Solid State Battery Isolator simultaneously isolates the battery and kills the engine immediately when triggered in  ccordance with FiA safety regulations. Cartek Battery Isolators can be supplied unit only for connection to customers own switches/buttons or as full its with high quality, fully waterproof, internal and external buttons and safety stickers. This  system  has  been  designed  to  simplify  installation  hereby  saving  time  and reducing build costs.

To stop the Engine there are two options of Battery Isolator:

The Cartek Battery Isolator GT disconnects the negative side of the battery from chassis, as described above, andstops the engine by providing a switched 12v power output which can be used as the main power input to the Ignition or ECU. When the Battery Isolator is switched off and the negative side of the battery has been disconnected it will also cut the 12v output powering your Ignition or ECU thereby stopping the engine. The GT Battery Isolator is designed for cars with no ECU or standard OE ECU.

XR BATTERY ISOLATOR (Aftermarket ECU/PDM/StandAlone Units)
The Cartek Battery Isolator XR disconnects the negative side of the battery from chassis, as described above, andstops the engine by outputting an ‘engine stop’ signal which is recognised by most programmable motorsport ECUs and Power Distribution Modules. The ECU or PDM will then shut down when it acknowledges this signal – which then stops the engine.
The latest XR Battery Isolator also features a 0.5 sec time delay between transmitting the engine stop signal and disconnecting the battery allowing ECUs time to perform a shutdown sequence before electrical power is lost.

Technical Information

Part Number:CK-BR-08-B
Size:L = 60mm,  W = 45mm
Weight70 g

Battery negative terminal:M8 stud.
Connector:Binder 09 0415 90 05
Flying Lead:Binder 79 1456 272 05 (2 meter long)
Operational Voltage:7v – 18v
Current consumption:25mA ON, 0.1mA OFF
Battery negative switching current:550-650A Typical, 2000A surge
Engine signal kill current:12v  0.2A  when  ON,  switched  to chassis/earth when OFF
Operating temperature:-10°C  –  +85°C.
Storage temperature:-40°C – +125°C