More context would be needed to be certain, but this seems to be a reference to telecommunications equipment, rather than to power tools.
A SIDACtor (correctly spelled like that, with a mix of upper and lower case) is a type of thyristor commonly used in telephones, modems, and other telecommunications devices, to protect them from sudden eletrical spikes on the line, such as might be caused by distant lightning, or transients from heavy industrial equipment in close proximity.

A Metal Oxide Varistor (MOV) does essentially the same thing, but is older technology.

The "Joule" part, of course, is just the unit of energy.

So, at a rough guess, I'd say that this spec refers to the level of internal protection against high-energy electrical transients, that is offered by a telecoms device due to it being fitted EITHER with a MOV OR with a SIDACtor. This spec is telling you how much energy the SIDACtor or MOV can dissipate without burning up itself. In other words, how much of a jolt can the device take without sustaining damaged.

So, I'd say that you actually don't need to translate it at all! Execept for replacing the "or" with "o", everything else stays the same: "Tel Joules MOV o Sidactor".


"Tel" is probably telephone or telephony or telecommunications, or some such.