circuit breakers ! where can i find!

Question

circuit breakers ! where can i find!

under (Mechanical)

(OP)

6 Aug 04 13:09

I have a device which should be protected by circuit breakers (Double pole MCBs) at the input & output. The input current is 12A max at 165V dc, & the output current is 28A max at 132V dc. The surrounding temperature is about
45C. The tripping should be in milliseconds.

where can I find circuit breakers that will do the job!

sordonyx (Electrical) · Answer 1 · 2004-08-06 17:26:19

Try ETA, www.etacbe.com, they do make custom made part if your requirements are not standard.

sreid (Electrical) · Answer 2 · 2004-08-09 12:40:40

Breaking high current/high voltage DC is difficult to do. Also, it sounds as if you are trying to protect some electronic circuit and circuit breakers are not likely to do that (they are primarilly there to stop smoke and fire). From the specs you give the device to be protected sounds like a power supply of some kind and power supplies are usually self protected using internal over current trip circuits.

ScottyUK (Electrical) · Answer 3 · 2004-08-22 18:30:57

ABB have a range of MCB's which have good DC ratings. Size is slightly larger than standard, but not significantly so. I'll try to find p/n's or a catalogue number when I get in to work (at home now).

----------------------------------

If we learn from our mistakes,
I'm getting a great education!

Come Join Us!

Posting Guidelines

circuit breakers ! where can i find!