Help Request: 3 Pole Normally Closed Contactor Search

[RAWS_Dan]

Hello,

I am in search of a Power control solution. 

Description: 

• 3-Phase
• 208VAC
• 125Amp

I am currently operation a remote system that the Sixnet DIO will hang up if communication is interrupted during operation and requires a hard restart. To save the 4hr Round trip for the hard restart my thoughts are to remote operate the power going into the system. Considering this contactor will be on the entire time I was in search of a normally closed option versus a normally open option drawing power for months on end.

I have considered the solid state relay SSP1A4125BDT but I don't know how it would handle being biased 24/7.

If you have any suggestions or questions I would greatly appreciate the support.

Thank you for your time,

Dan

[Joel_Weder · Accepted solution]

Hi Dan,

My team (Remote Operations) does not work directly with MV systems. However, we offer SCADAPack RTUs, small industrial controllers that can help provide a remote connection (along with a modem or radio) and monitoring/control of remote sites. (see attached datasheet) A SCADAPack could locally control the relays via Modbus or DNP3 communication protocol.

Regarding the solid state relay, to get more useful information you may want to go to se.com and do a Search on the part number. Once you're on the Harmony page you can click on the green Chat icon in the lower-right of the page to find the right team to talk with.

Here's the Harmony solid state relay SSP1A4125BDT page on the Schneider USA page:

https://www.se.com/us/en/product/SSP1A4125BDT/single-phase-relay-harmony-solid-state-relays-125a-pan...