Device resisting current threat so remarkably (8)

I believe the answer is:

rheostat

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'device' is the definition.
(rheostat is a kind of device)

'threat so remarkably' is the wordplay.
'remarkably' indicates anagramming the letters.
'threat'+'so'='threatso'
'threatso' anagrammed gives 'RHEOSTAT'.

'resisting current' acts as a link.
This may not be right. Some or all of it may belong to another bit of the clue.

Can you help me to learn more?

(Other definitions for rheostat that I've seen before include "The rotas (anag.)" , "showing some resistance" , "Current controller" , "Electrical controller" , "Means of controlling resistance" .)

I've seen this clue in The Telegraph.

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