600 VDC switches [RE-wrenches]

[Chris Worcester]

Hi Wrenches,

I have a GE safety switch (model GEDTH2261RDC) rated at 600V DC 30A fused
disconnect to share info on. I was concerned as to it's application as one
pole, out of 3, is jumped to another at the factory, and the 3rd pole is not
jumped. I found 12 Amp 600V DC rated class R fuses that fit. According to
the internal schematic this is a 2 pole, line to load disconnect. Because of
the difference in the way the poles are wired we had a lengthy debate as to
how to use this device at the 600 V rating. I called GE and got through to
an engineer that informed me, after much questioning, that this is a single
circuit disconnect for DC applications, in other words; the positive is
landed on the jumped pole, for a double contact break, and the negative of
the same circuit is landed on the single pole. In this way the single
circuit is opened without a DC arc. I hope this helps.

Chris Worcester
www.solarwindworks.com
chris at solarwindworks.com
Toll Free: 877-682-4503 Fax: 530-582-4603
"Proven energy solutions"

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