NEMA What?

With the Summer heat beating down most of the nation this week and the calls for Cabinet Cooler Systems are like the temperatures, through the roof, I thought it would be good to discuss the different NEMA types.  EXAIR offers our Cabinet Cooler Systems in three different NEMA types, 12, 4, and 4X.  Below is a description of what each is suitable for.

NEMA Type 12

NEMA Type 12 enclosures are general purpose use enclosures.  These are designed for indoor use and are designed to provide protection against dust, falling dirt, and dripping non corrosive liquids.  This is generally what the enclosures on most metal-cutting machines are rated.  These enclosures are only available for non-hazardous areas.  An enclosure with a NEMA Type 12 may or may not have a gasket seal on the door and on all electrical knockouts.  The EXAIR NEMA Type 12 Cabinet Cooler Systems for these units are available in cooling capacities from 550 – 5600 BTU/hr. along with continuous operation or thermostat control, non-hazardous purge, high temperature operation, and with the EXAIR Electronic Temperature Control.

NEMA Type 4

NEMA Type 4 enclosures are designed to be watertight / weatherproof.  These enclosures are not corrosion resistant but they are able to protect the inside of the enclosure from  a minimum of 65 GPM from a 1″ nozzle delivered from a distance of 10′ for 5 minutes.  These are found in wash down areas where Stainless Steel is not needed along with outside where corrosion is not a concern.  These units can be used on a NEMA Type 12 enclosure for added protection against oil or dirt in the air.  The EXAIR NEMA Type 4 Cabinet Cooler Systems are available in cooling capacities from 550 – 5600 BTU/hr. along with continuous operation or thermostat control, non-hazardous purge, high temperature operation, and with the EXAIR Electronic Temperature Control.

NEMA Type 4X

NEMA Type 4X enclosures are designed with the same specifications as a NEMA Type 4 enclosure with the addition of corrosion resistance.   This means the enclosure must be sealed against wash down and be resistant to corrosion.  The corrosion can come from a chemical or environmental conditions such as a food process wash down or outdoors near the ocean such as on an oil rig or ship dock.  The EXAIR NEMA Type 4X Cabinet Cooler Systems are available in cooling capacities from 550 – 5600 BTU/hr. along with continuous operation or thermostat control, non-hazardous purge, high temperature operation, and 316 stainless steel.

If you have a questions about which EXAIR Cabinet Cooler System is the best fit for your enclosure or you need help sizing the system, feel free to give us a call.  You can also find our Cabinet Cooler Sizing Guide here on the website.

Brian Farno
Application Engineer
BrianFarno@EXAIR.com
@EXAIR_BF