Low operating temperature safety switch 1

[thinker]

Could anybody advise the manufacturer of enclosed safety or disconnect switch (pad-lockable, 30A, 3 phase, 480V) capable of operating at ambient temp. of -40 deg.Celcius? This is INDOOR application for climatic test chamber.

 

[VEBill]

You capitalized 'INDOOR'.

Can't you find a suitable switch designed and qualified for OUTSIDE application? -40 is a not-uncommon winter temperature in many places. I think all you need is an OUTDOOR switch with all the other parameters.

Excuse me if I'm reading too much into your capitalization of the word INDOOR.

 

[thinker]

Yes, I could use outdoor switch. I just wanted to say that I might not need all degrees of protection associated with outdoor design. The problem is that so far we found switches for -30 deg.C only and not for -40.

 

[VEBill]

Try some Canadian suppliers... ;-)

 

[jraef]

Bussman makes one rated for -40.

http://www.bussmann.com/library/docs/Disconnect/ULCSAnfds.pdf

Allen Bradley 1494V series is rated to -35

Eng-Tips: Help for your job, not for your homework Read faq731-376

 

[thinker]

Jraef,
Thank you very much for excellent tip. This is exactly what we need!