High output current, short circuit protection circuit diagram.

[coolpixs4]

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High output current, short circuit protection circuit diagram.
Thank to this online circuit simulation tool: -https://www.falstad.com/circuit/circuitjs.html, amazing visualize tool.

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(We can remove Q3 and support components for Q3, just keep Q1 &Q2 are enough for circuit operating)
just using 1 LED for indicator: RED or Green
You can customize your circuit for waht you need.

When the short happen, It cuts out the DC-out, to operation again, just press reset button.

$ 1 0.000005 2.1831051418620846 56 5 43
r 16 128 16 176 0 10000
w 16 176 16 224 0
R -144 64 -144 32 0 0 40 12 0 0 0.5
w 128 240 128 320 0
r 128 320 128 368 0 1000
162 128 368 128 448 2 default-led 1 0 0 0.01
g 128 480 128 512 0
w 128 64 464 64 0
w 464 64 464 80 3
r 240 96 240 144 0 1000
w 240 144 240 176 0
w 240 176 256 176 0
w 240 96 240 64 0
w 240 64 128 64 0
r 400 144 352 144 0 1000
w 448 128 448 144 3
w 448 144 400 144 0
w 352 144 352 208 0
w 352 208 400 208 0
r 352 320 352 416 0 10000
w 352 480 128 480 0
r 480 192 528 192 0 10000
w 464 192 480 192 0
w 528 192 576 192 0
w 576 64 672 64 0
s 848 224 848 288 0 1 false
r 192 272 256 272 0 10000
w 16 272 16 224 0
w 256 272 576 272 0
w 432 80 432 16 0
w 432 16 576 16 0
w 576 16 576 64 0
w 16 272 48 272 0
w 96 272 192 272 0
r 768 208 768 320 0 2.3
s -128 64 -80 64 0 0 false
w -128 64 -144 64 0
w -80 64 -64 64 0
w 64 224 16 224 0
w 464 192 448 192 0
w 64 224 80 224 0
w 256 176 272 176 0
w 336 176 400 176 0
w 768 320 768 480 0
s 768 112 768 160 0 1 false
w 768 64 768 112 0
w 768 160 768 208 3
w 352 288 352 208 0
w 128 208 128 176 3
w 576 96 576 64 0
w 576 160 576 192 0
w 640 480 352 480 0
209 -64 208 -64 384 0 0.0000047 12 25
w -64 480 128 480 0
w 16 128 128 128 0
w 848 224 848 64 0
w 848 64 800 64 0
w 848 288 848 480 0
w 848 480 768 480 0
f 80 224 128 224 33 3 1
f 448 128 448 80 33 3 1
f 448 192 400 192 33 3 1
w 576 272 576 224 0
r 672 176 672 240 0 1000
162 672 288 672 368 2 default-led 0 1 0 0.01
w 672 240 672 288 0
w 672 176 672 64 3
w 128 448 128 480 0
w 576 224 576 192 0
x 738 317 803 320 4 24 LOAD
x 863 238 972 241 4 24 Short_SW
x 63 443 225 446 4 24 Short_Indicator
w 0 64 -64 64 0
w 64 64 128 64 3
x 381 94 413 97 4 24 Q1
x 394 241 426 244 4 24 Q2
x 145 232 177 235 4 24 Q3
w -64 208 -64 64 0
w -64 384 -64 480 0
w 0 64 64 64 0
w 352 416 352 480 0
w 272 176 336 176 3
w 128 128 128 176 0
w 48 272 96 272 0
w 128 128 128 64 0
w 576 96 576 160 3
w 672 368 672 480 0
w 672 64 768 64 0
w 768 64 800 64 0
w 640 480 672 480 0
w 672 480 768 480 0
w 352 288 352 320 0
s 432 352 432 416 0 1 true
w 352 320 432 320 0
w 432 320 432 352 0
w 432 416 432 480 0
w 432 480 352 480 0
x 449 380 557 383 4 24 Reset\sSW
o 59 64 0 4099 40 0.0125 0 2 59 3
o 60 64 0 4099 20 0.05 1 2 60 3

 

[FvM]

Does it work in real hardware? Unlikely.

Need to check if safe operating area is kept for different short resistances.

 

[std_match]

It can work if you implement a current limit in Q1 by reducing the gate voltage, and replace Q2 with a bipolar transistor.
Otherwise Q1 is probably outside of the safe operating area for some shorts, as mentioned by FvM.
The relation between Q1 gate voltage and "current limit" is not very exact, so you need to design for 2-3 times the wanted maximum current.