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Old 25th Mar 2021, 5:57 pm   #6
ortek_service
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Join Date: May 2018
Location: Northampton, Northamptonshire, UK.
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Default Re: Weir HSS100/4 PSU blowup

Well this one has similar part number - but 55 & 50A rather than 5A
- Although still quite cheap: https://www.switchelectronics.co.uk/...-channel-to220

If it really is just used as a switch, then it should be too critical on equivalents - just same voltage / current /power ratings and Vgs threshold / ratings.

But switching the negative side seems a bit odd, as rest of the circuitry is then floating at high +V DC (although, if switching that will always be some parts at quite high -ve DC voltage). And I would expect the voltage rating of it may want to be a bit higher than 60V, as could be exposed to much greater ones when it's off, due to leakage currents. So maybe a 600V 5A one, if available, would be more expected.
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