⚡ Test smarter, not harder — the Li'L Popper that keeps your circuits in check!
The POP3 Lil Popper Fuse Tester by ESP is a 3 Amp, 24V control circuit tester featuring a self-adhesive backing for easy temporary installation. It replaces multiple legacy fuse testers, offering a compact, reliable, and universally compatible solution for professionals needing precise circuit diagnostics.
J**N
Didn't risk it with generic breakers, worked perfectly
Was considering going rogue and buying what looked liked generic breakers with the same ratings, just to save a couple bucks. Glad I didn't as this is rated/tested/sourced specifically for furnace fuses, and also comes with proper jumper wires and hardware to mount. 100% recommend if you have a furnace that blew a fuse and you need to test for shorts without paying $8 a 2 pack at your local hardware store...
A**R
Must have for hvac
Good to have
K**L
Great Tool!
Use it almost everyday
J**T
Great product.
I have been using this 3amp product as well as the 5amp for many years. I will continue to use them until they are unavailable.
R**Y
Works great
Works great as advertised. If it is 3amp hvac fuses you are working on, you will need to change the ends as they are not compatible.
T**L
If the heater stops heating go reset the fuse
They work good. Check the one in your heater for the size fuse and get one.
M**I
Beautiful
I don’t need to blow up 5 fuses anymore very good for troubleshooting for shortage 24v highly recommended.
D**L
Great
Great
Trustpilot
1 week ago
2 months ago