Short Circuit protection Using Relay

[rmrps]

Hi i am get the following short circuit protection circuit from the website it is working fine .The problem is when the 12v supply is on it is started from NC operation after pressing the push button only the output will come and if it is short circuit at the output the relay get turn off and it is change to NC.I want to modified this circuit as first it work with NO and if it is short circuit it is work to NC that is i want to avoid pressing push button at the start up and automatically it has to work to NO at first and if it is short circuit at the output it has to work with NC.i am unable to find the way to implement this logic.Please guide me to achieve this solution

 

[HarryA]

I would think that when you push the button nothing will happen as the NO (normally open) contacts block the flow of current through the coil of the relay.

Are you looking for a 12 volt circuit breaker?  Like https://www.ebay.com/itm/12V-24V-DC-HOME-SOLAR-SYSTEM-WATERPROOF-CIRCUIT-BREAKER-RESET-FUSE-INVERTER-USA/153563481272?_trkparms=ispr%3D1&hash=item23c118c4b8:m:mmcjUEQXbNT08tOydOyNxXQ&enc=AQAEAAACUBPxNw%2BVj6nta7CKEs3N0qXpeqhE5Yqs%2B5LvC9kXWBRLunj104AP1sk21at2FZKc2iKh6XL47x1FcO%2BWWY7Rimprmp3h7zN%2FF8RD1a7w7vzGGJeb9L2sR7f6jp3cjblM8ffcC%2FyCeSoSY8lAMKJbUhQ6S8M8LOVbw3gcZrpihnlCk8ERij6l3ii4IEdrt7BTr1HND0HLVDYB85tX0TxWMy4Wq6kO2e4c9S4%2BWinS6pDUakuP3j%2BpaX9BttfII9rjI7xjJnj%2B%2F3fVaA4a9eY03U4A24FUFMwuTrhjRN0WLjdVHVfES9TarXp1Nqr9%2FRtAXJuBcYPC%2FTW7Q4jbkyOcegtOw9dtKtyl9KgHUA6lvz%2FPAcb9QjLahlUE%2BG31z1JrEmfsOmbfmjGGNP0pKGeb9kleHNWuDkMjTGwqsKXQn6yLqiiUhVjtnJ1xTFJKYKD703LIVwIEkfYMIk%2FtNglIpTR%2BzjMcKI6QxGd%2FKD%2FTqOj0lLtOorDfKFUcIeO1%2F0j8LHZO3Yua4YlExNsiHhanZag6MIt5MVTb%2FU4hbfIhgqewz8q06ycP32xVpMz6d4tWdBQN4EKPtPGmU0PnWtCTGZ7aDEuFoPYYG%2FIr5jDaWLGQj30RndKgD7T3H%2FtNskrUCcD7Ypi7UdAOQiNOQ6wvFjlCWz%2BU1X1a4r%2F6ECOOJznNxsK9%2BdtjhS9mbWZcgR7UpoDXiS%2FkqcY1kL9ZVfYgpSoe4z5egyor4y3LYbs1taDt%2B5g84KV8oMwjE6SA60lmeO%2BzHpPjDMrm4SYeGZhi1c0%3D&checksum=15356348127258f693ad8dc343969d0a485f272220a5&enc=AQAEAAACUBPxNw%2BVj6nta7CKEs3N0qXpeqhE5Yqs%2B5LvC9kXWBRLunj104AP1sk21at2FZKc2iKh6XL47x1FcO%2BWWY7Rimprmp3h7zN%2FF8RD1a7w7vzGGJeb9L2sR7f6jp3cjblM8ffcC%2FyCeSoSY8lAMKJbUhQ6S8M8LOVbw3gcZrpihnlCk8ERij6l3ii4IEdrt7BTr1HND0HLVDYB85tX0TxWMy4Wq6kO2e4c9S4%2BWinS6pDUakuP3j%2BpaX9BttfII9rjI7xjJnj%2B%2F3fVaA4a9eY03U4A24FUFMwuTrhjRN0WLjdVHVfES9TarXp1Nqr9%2FRtAXJuBcYPC%2FTW7Q4jbkyOcegtOw9dtKtyl9KgHUA6lvz%2FPAcb9QjLahlUE%2BG31z1JrEmfsOmbfmjGGNP0pKGeb9kleHNWuDkMjTGwqsKXQn6yLqiiUhVjtnJ1xTFJKYKD703LIVwIEkfYMIk%2FtNglIpTR%2BzjMcKI6QxGd%2FKD%2FTqOj0lLtOorDfKFUcIeO1%2F0j8LHZO3Yua4YlExNsiHhanZag6MIt5MVTb%2FU4hbfIhgqewz8q06ycP32xVpMz6d4tWdBQN4EKPtPGmU0PnWtCTGZ7aDEuFoPYYG%2FIr5jDaWLGQj30RndKgD7T3H%2FtNskrUCcD7Ypi7UdAOQiNOQ6wvFjlCWz%2BU1X1a4r%2F6ECOOJznNxsK9%2BdtjhS9mbWZcgR7UpoDXiS%2FkqcY1kL9ZVfYgpSoe4z5egyor4y3LYbs1taDt%2B5g84KV8oMwjE6SA60lmeO%2BzHpPjDMrm4SYeGZhi1c0%3D&checksum=15356348127258f693ad8dc343969d0a485f272220a5   You don't see a URL like that everyday!

You could put a relay across  it with a single pole double throw contacts  so that when there is not short you light a green led else a red one.

How to build a circuit breaker is shown here that could be modified for 12 volt operation if that is your goal.

https://www.brighthubengineering.com/diy-electronics-devices/74420-make-an-ac-mains-electronic-circuit-breaker/

Else define what your goal is better.  Good luck.