Avoid throwing vehicle circuit protection system of load harm

The utility model discloses an avoid throwing vehicle circuit protection system of load harm, including the flame -out valve of main power switch, battery, time -delayed separation relay, key switch, engine, the positive pole of battery, main power switch's a normally open contact and a normally open contact of time -delayed separation relay are connected to key switch's B terminal respectively, and another normally open contact of main power switch is connected with on -vehicle time -delayed separation 0's B+ end, and it is continuous with the negative pole of battery that the back is established ties to another normally open contact of time -delayed separation relay and main power switch's coil, behind flame -out valve of engine and the time -delayed separation relay coil parallel connection, one end links to each other with key switch's ON gear, and the other end links to each other with the negative pole of battery, main power switch links to each other with full car load. The utility model discloses can