Forum Title: Difference in AC and DC disconnects
I just put in my first DC disconnect and for the life of me I can't see what the physical difference is. Besides the fuses is there a difference? Is there such a thing as a non-fused disconnect?Thanks,Byron
Category: General Electrical Discussion Post By: Gregory Green (Hilbert, WI), 03/23/2017
Is this a PV DC disconnect?Some manufacturer's have different arc chutes and most will require the use of multiple poles being used to facilitate the breaking of the DC arc.Square D and Siemens both have wiring diagrams, have not used a Cutler-Hammer Disconnect yet.Yes, you can get them as non-fused.

- Al Baker (Oppelo, AR), 03/25/2017

Yes, it is a 30 amp disconnect for a PV system.

- Shirley D (Unionville, GA), 03/25/2017

You can usually put a big diode across a DC contact to put out the fire.

- Don Trumph (Sun City Center, FL), 03/25/2017

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