This is uninspiring. It's a circuit breaker that looks and feels just like the real thing, but has no fault detecting ability at all. Why would somebody even make something like this?
These fake breakers weigh 53g (2oz) per module. Typical UK breakers weigh 100g (4oz) per module. But weight is not a guarantee of functionality.
It's made worse by the fact that there is no standard test to see if a circuit breaker is tripping at its rated current. There are specialist testers that use a low voltage transformer to test breakers, but they usually have to be removed from equipment for the test. A type C 32A breaker would also need to be tested at a minimum of 160A.
The comment about industries who might appreciate un-trippable circuit breakers breaks down as follows:-
Welders - particularly mobile welders often have an issue where the high inrush current to their equipment causes tripping of power circuits. Modern inverter welders usually contain an inrush limiting circuit to try and minimise this while also providing protection to the rectifier and capacitors.
General contractors / General builders. Some of the worst wiring I've ever seen has been done by "all-trade professionals".
Millwrights - The biggest electrical carnage I was sent to fix was caused by factory maintenance operatives who had progressively replaced all the fuses in line with a machine with wire links. The final straw was when they pushed a star-delta contactor in - bridging all three phases, and took out power for the whole factory, while explosively vaporizing many of the cables in the machine's control panel in the process. I wish there had been a camera to catch the incident happening, and then my expression when I arrived and opened up the control panel to find the charred remnants of the wiring and copper plated interior.
Unscrupulous landlords. They're a thing in the UK. Usually cramming as many tenants as possible into squalid little rooms with butchered wiring and no fire escapes. Slightly less of an issue now than it used to be.
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