Enclosures

HPS products are available in Type 1, 2, 3R, 3RE, 3RX, 4, and 4X enclosures. See detailed description of enclosure types below.

Not all product lines or kVA sizes are compatible with all enclosure types. Please use the E-Quotes Lite product configurator to determine which options are most commonly available.

Comparison of Enclosure Types for Indoor and Outdoor Non-Hazardous Locations

		Indoor						Indoor/Outdoor
CSA C22.2 No 94.2 Enclosure Type		1^a	2^a	5	12	12K	13	3	-	3R^a	-	-	3S	-	4	4X
NEMA 250 Enclosure Type		1^a	2^a	5	12	12K	13	3	3X	3R^a	3RE^f	3RX^a	3S	3SX	4	4X
Equivalent IEC 60529 IP designation		IP20	IP22	IP53	IP54	IP54	IP54	IP55	IP55	IP24	IP24	IP24	IP55	IP55	IP66	IP66
Provides a degree of protection against these environmental conditions	Accidental contact with live parts	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
	Falling dirt	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
	Dripping and light splashing of non-corrosive liquids		X	X	X	X	X	X	X	X	X	X	X	X	X	X
	Circulating dust, lint, fibers and flyings				X	X	X	X	X				X	X	X	X
	Settling^d dust, lint, fibers and flyings^d			X	X	X	X	X	X				X	X	X	X
	Wind-blown dust							X	X				X	X	X	X
	Rain, snow, and external formation of ice or sleet^b							X	X	X	X	X	X	X	X	X
	Horizontal blowing rain, snow or sleet										X
	External formation of ice or sleet^c												X	X
	Hose down and splashing water														X	X
	Corrosion								X			X		X		X
	Oil and coolant seepage				X	X	X
	Oil and coolant seepage, spraying and splashing						X

Notes
a - These enclosures may be ventilated
b - External operating mechanism(s) is not required to operate when the enclosure is ice covered
c - External operating mechanism(s) shall be operable when the enclosure is ice covered
d - These fibers are flyings are non-hazardous and are not considered Class III type ignitable fibers or combustible flyings
e - Since IEC 60529 does not specify degrees of protection for many conditions considered within CSA C22.2 No. 94.5, the IEC classifications cannot be exactly equated to North American Type numbers. the North American Type numbers meet or exceed the test requirements for the associated IP classifications. This table cannot be used to convert from IEC classifications to North American Type designations.

References: CSA C22.2 No. 94.2, CSA C22.1 (CEC), NEMA 250, NEMA document - NEMA Enclosure Types
Disclaimer: This table is for reference purposes only. Please refer to appropriate standard for enclosure selection to meet your application specifications.

Enclosure Types

TYPE 3R

This is a general purpose ventilated enclosure constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against the ingress of solid foreign objects (falling dirt); and to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, snow); and that will be undamaged by the external formation of ice on the enclosure.

TYPE 3RE

This is a general purpose ventilated enclosure constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against the ingress of solid foreign objects (falling dirt and circulating dust); and to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, circulating snow); and that will be undamaged by the external formation of ice on the enclosure.

TYPE 4

This is a general purpose non-ventilated enclosure constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against the ingress of solid foreign objects (falling dirt and circulating dust); and to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, circulating snow); and that will be undamaged by the external formation of ice on the enclosure.

TYPE 4X

This is a general purpose non-ventilated enclosure constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against the ingress of solid foreign objects (windblown dust); and to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, snow, splashing water, and hose directed water); that provides an additional level of protection against corrosion; and that will be undamaged by the external formation of ice on the enclosure. (Note: not submersible). Please see our TENV product options here.

TYPE 12

This is a general purpose non-ventilated enclosure constructed (without knockouts) for indoor use only to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against the ingress of solid foreign objects (falling dirt and circulating dust, lint, fibers, and filings); and to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (dripping and light splashing). (Note: not submersible).