Providing relief for your cabinets with vortex-tube-based coolers has advantages to combat today's heat-producing electronics and harsh conditions. Many - but not all - cabinet cooler systems are UL listed to maintain the existing NEMA integrity of your current enclosure.
If the coolers are not UL listed, there
are no guarantees that your electronics will be protected from the surrounding
NEMA 12 coolers are intended for indoor
use primarily to provide a degree of protection against dust, falling dirt and
dripping non-corrosive liquids. NEMA 4 coolers are intended for indoor or
outdoor use primarily to protect against windblown dust and rain, splashing
water and hose directed water. NEMA 4X enclosures offer the same protections as
NEMA 4 with an added protection against corrosion by using corrosion-resistant
stainless steel materials.
Maintaining these NEMA ratings
requires little more than installation through the cabinet's existing knockout
or cutting a hole if no knockout is available. CE approval, for users or OEM
manufacturers with users overseas, can also be found on vortex tube coolers.
The Importance of UL Listing
April 1, 2012