rly210 timer for softstart

[traw]

Someone had given me one of these - wish to use to as softstart.
http://www.hobbytron.com/NTE/relay/pdf/RLY210.pdf

Looks like delayed turn on in series with load using terminals 1 and 3, thus need resistor like 50 ohm in parallel with 1-3 to leak some juice through for cap charging prior to delayed turn on. However, bothered with the 1A load mentioned which would shoot this down. or am i completely misunderstading this datasheet and device? perhaps alternate way to apply

Have alternate softstart built, but since had this one on hand and could be very tidy curious if useable. Modules a little pricey and cheaper to build softstart with simple relay.

[AndrewT]

Hi,
you read the 1Aac limit correctly.
For a medium to large toroid or large EI transformer soft start circuit you will need a lot more than this.

Note also, it is a solid state relay.
I don't think SS is suitable for supplying any decent transformer.
It may be OK with a PCB mounted transformer upto 36VA, but I would not trust it any higher.

[frank1]

Originally posted by AndrewT
Hi,
you read the 1Aac limit correctly.
For a medium to large toroid or large EI transformer soft start circuit you will need a lot more than this.

Note also, it is a solid state relay.
I don't think SS is suitable for supplying any decent transformer.
It may be OK with a PCB mounted transformer upto 36VA, but I would not trust it any higher.

But it would be ideal when used to energise a large power relay (with AC coil) as a slave.

FDJ