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Registered Member #72
Joined: Thu Feb 09 2006, 08:29AM
Location: UK St. Albans
Posts: 1659
I can't help you with the switch, but I do have a shed-load of Omron MK3P 3 pole relays ]omron_mk3p.pdf[/file] They are 24VDC coils (56mA, 430ohm), which should not be too bad to create from mains, might even be an advantage to bring out a low voltage control? The carrying rating is only 10A at 250v, electrical life of 100k switching operations at 250V 1750VA inductive load.
Registered Member #3414
Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245
Sounds interesting. It's for a 0.25HP motor, 2.3A continuous.
I think it's four double pole relays, in order to provide sufficient isolation, etc.
Because it's a motor I figure I need higher rated relays than 3A.
I was thinking of incorporating either 12V or 24V transformer for low voltage lighting/submersible coolant pump, so 24V won't be an issue.
The coolant pump will require a rectified supply, and it probably makes sense to smooth it as well. I have a spare 24V battery charger which should be ideal.
EDIT: found these four pole double throw relays from RS. I'd need two, which at that price isn't bad.
Just noticed the four pole ones are only rated for 5A.
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