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Discarnect Post Mounted Battery Master Switch image #1
Discarnect Post Mounted Battery Master Switch image #2
Discarnect Post Mounted Battery Master Switch image #2
Discarnect Post Mounted Battery Master Switch image #2
Battery Master Switches

Discarnect Post Mounted Battery Master Switch

Part Number: 020.012
£10.63 ex. VAT On order
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Discarnect Master Switch, mounts to battery posts, including flat type. Designed for negative terminal To fit, remove your -ve battery lead and slip the clamp part of the Discarnect onto your battery post. Simply re-connect your negative battery lead to the lug on the Discarnect. You have to stretch it if you wish to fit to the +ve terminal. To immobilise the car unscrew and remove the knob. The by-pass fuse maintains current to all electrical circuits (alarm, stereo etc). As the starter motor draws over 150 amps, any attempt to operate or hot wire the starter motor will cause the fuse to blow, immobilising the car until the knob is screwed back on. Rated for a continuous load of 100 amps on 12 volt systems
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Please call +44 (0) 1885 488 488 between 9 and 5 (UK time) Monday to Friday to speak to one our sales team.

Visit our shop

We also have a shop at Bromyard, so if you live nearby, or are in the area please call.

Holden Vintage & Classic, Linton Trading Estate, Bromyard, Herefordshire, HR7 7QT, United Kingdom

Open 9.00am and 5.00pm Monday to Friday, 9.30am and 12 noon Saturday. We are closed Bank Holidays.


Delivery charges are based on the value and weight of your order and your location. 

Your available delivery options will always be shown to you at the checkout. 

More about our delivery methods can be found here

More information about our delivery methods can be found here


If any of our products develop a fault as a consequence of faulty workmanship or faulty materials within twelve months from the date of purchase, they may be returned to us with the original invoice, and a covering letter explaining the problem. On receipt of the returned goods, we will, at our discretion, replace or repair the item/s and return it/them to you. We do not refund your cost of returning the goods to us. 
NB We do not refund postage costs for items returned for refund unless they are faulty.

Read more about returns here.