Significant expertise in interpreting the nema 250. Electrical enclosures we can fabricate enclosures in any size, indoor or outdoor, stainless, aluminum, or powder coated mild steel. This standards publication was developed by the nema enclosure section of the national electrical manufacturers association. This process brings together volunteers andor seeks out the views of persons who have an interest in the. Section 2 enclosure types, features, and applications. Differences in the definitions, tests, and criteria. Can we get away with using a nema 4x enclosure if the likely hood of combustion is minuet, or are nema 7 enclosures demanded. The excerpts are for illustration and educational purposes. Type 1, 3r, 4x stainless steel, 12 doublethrow 200 600 600 250 nonfusible type 1, 3r, 4x stainless steel, 12 interlock receptacle switches 1 2 30 100 600 250 fusible and nonfusible type 1, 3r, 4, 4x stainless steel, 5, 12 hazardous location switches 60 225 600 250 nonfusible type 7 and 9 divisions 1 and 2 of. Class a 1 control series fiberglass enclosures nema type 1, 3, 3r, 4x, and 12 single door with twistlock latches. Type 1 enclosures are constructed for indoor use to provide a degree of protection to personnel against access to hazardous parts and to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign. Nema contactor and starter specifications ac coil data auxiliary contacts nema a600 and p300 bulletin 595, 596 nema size operating volt amperes burden va heat dissipation w coil operating limits 60 hz coils inrush sealed 00 70 8 2. Nema 1 enclosures are used in applications where sealing out dust, oil, and water is not required.
Nema standard 250, types 1, 3, 3r, 4x, temperature range. Each type specifies characteristics of an enclosure, but not, for example, a specific enclosure size. Electrical enclosures all types, nema 1, nema 3r, nema. For explanation of the nema ratings click on this link nema ratings. Degree of protection for electrical equipment purpose. Nema 7, 8, 9 and 10 are the ones to look at for hazardous environments. Comparison chart excellent nema electrical enclosures. Below are some of the types of motors that may be encountered. Nema ul csa rating national electrical underwriters canadian standards manufacturers laboratories, inc. How do the water test parameters compare between nema 250 hose testing and iec.
Enclosures constructed for indoor use to provide a degree of. Nema 2 same as nema 1 including protection against dripping and light splashing of liquids. Section approval of the standard does not necessarily imply that all section members voted. The following charts provide a general comparison of the most common nema rated enclosures, defined by the national electrical manufacturers associationnema, these ratings represent the standard to specify enclosures with the right level of protection from both liquid and solid objects for industrial applications per nema 2502003 standard. In north america, the national electric manufacturers association nema sets motor standards, including what should go on the nameplate nema standard mg 110. Choose to either upload the image file directly, or copy and paste a link url that points directly to the image. Either an iec 529 ip rating or a nema 250 type rating for the pendant. This style of enclosure, while offering a latching door, does not have a gasketed sealing surface. This material is derived from national electrical manufacturers association for electrical equipment, nema 250, enclosures for electrical equipment volts maximum, 1997 by nema the information contained herein is not intended to be complete descriptions. A stand alone paper is available for each afci type. Nema enclosures produces high quality rated standard outdoor electrical enclosures in wallmount, free standing, floor mount, junction box and trough types. Class a 1 control series fiberglass enclosures nema type 1 and 3r single door with twistlock latches part number price enclosure overall size.
Nema enclosure type numbers to iec enclosure classification designations. For example, types 3, 4 and 6 are intended for outdoor. This standard also references requirements for class i. Degree of protection for electrical equipment ip rating vs. Nema vs iec standards course content the motor standards can be grouped into two major categories. Publication 2502003, enclosures for electrical equipment volts maximum. These enclosures provide a degree of protection to personnel against access to hazardous parts and provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects such as falling dirt. Type 1 enclosures constructed for indoor use to provide a degree of protection to. Same as nema 12 but adds protection against oil and coolant splashing and spraying. Nema standards describe each type of enclosure in general and functional.
National electrical manufacturers association 0 north 17th street, suite 1752 rosslyn, va 22209 this is the third edition of this publication. The nema 51520r is a 20 amp, 125volt, tblade female connector. The national electrical manufacturers association nema standards and guideline publications, of which the document herein is one, are developed through a voluntary standards development process. Feb, 2017 weve read that some nema 4x enclosures are usable in class 1 div 2, but nema 7 enclosures are more heavy duty and prevent combustion within the container. Decoding healthcare 3pm podcast 2 band guys beyond polarity button mashers 1 song cast out. Clearly define the industry standards that exist for electrical enclosures. Nema classifications nema 1 enclosures are typically used for protecting controls and terminations from objects and personnel. Type 10 enclosures constructed to meet the requirements of the mine safety and health administration, 30 cfr, part 18.
The type definition varies from manufacturer to manufacturer. Nema type 1 and 3r single door with twistlock latches. Electrical enclosures all types, nema 1, nema 3r, nema 4x, nema 12. Type 9 enclosures constructed for indoor use in hazardous locations classified as class ii, division 1, groups e, f, or g as defined in nfpa 70. Nema and ul 50 enclosure type ratings are accepted all over north america and referenced in the national electric code, nfpa, ul standards, and other product safety standards. Note that higher numbers do not include the lowernumbered tests. Most of the items sold at galco are rated nema 1, 12 or 4x and the european rating of ip00, ip20, ip65 etc. It is the responsibility of the user to verify the enclosure rating necessary for the given application. These enclosures provide a degree of protection to personnel against access to hazardous parts and provide a degree of protection of the equipment inside the enclosure against ingress of. The nema l530p is a 30 amp, 125volt, 3prong locking male plug.
Nema 3 enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment. In addition, they provide protection against falling dirt. The nema types meet or exceed the test requirements for the associated iec classifications. F2 labs can assist you with nema 250 testing and ul 50 testing, and the proper certifications for your products. Nema 1, 2, 3, 3r, 3s, 3x, 3rx, 4, 4x, 5, 6, 6p, 12, 12k and. Type 1 enclosures constructed for indoor use to provide a. Enclosure type ratings as defined by ul 50, 50e and nema 250. Nema 115p twopole, no ground and nema 515p twopole with ground pin plugs are used on commonplace domestic electrical equipment, and nema 515r is the standard 15 a electric receptacle outlet found in the united states, and under relevant national standards, in canada csa c22. Can we get away with using a nema 4x enclosure if the likely hood of combustion is minuet, or. Decoding nema plugs and receptacles nema x5 15p p indicates plug or receptacle p is plug r is receptacle or socket 15 indicates the current rating and standard values are 15 amps 20 amps 30 amps 5 indicates the voltage 2 indicates 115 vac, ungrounded. Electrical enclosures nema 3, nema 4, nema 12, nema.
The comparison of nema and ip enclosure ratings is only approximate. Industrial use dust tight and drip tight indoor type 12 enclosures are intended for use indoors to protect the enclosed equipment against fibers, flying, lint, dust and dirt, and light splashing, seepage, dripping and external condensation of noncorrosive liquids. Understanding motor nameplate information nema vs iec. General purpose type 1 enclosures are intended for use indoors, primarily to prevent accidental contact of personnel with the enclosed equipment, in areas where unusual service conditions do not exist. This standards publication was developed by the nema metal cable tray and nonmetallic cable tray sections. Nema 250 addresses the ingress protection of enclosures for electrical equipment rated at volts or less and intended to be installed and used in specific nonhazardous and hazardous locations. Despite the large number it is a basic level of protection. Featured software all software latest this just in old school emulation msdos games historical software classic pc games software library. Nema enclosure type number iec enclo sure designation 1 ip10. Ul945v nonflame propagating flame spread classification per nfpa no.
Nema 115r to nema 115p power cords electrical power. Provides definitions, minimum requirements and test methods for stabilized constant potential type filtered and unfiltered utility type battery chargers. Nema type 1 indoor nema type 3r outdoor nema type 5, 12 singlephase 240 vac threephase 240 vac 250 vdc standard fuse time delay standard fuse time delay standard fuse fusible 2 pole 3 wire 240v 5060 hz 30 th3221 th3221r th3221j4 1. Nema mg 1 2018 tests and performanceac motors section ii part 12page 1 standards text amended section ii small fractional and medium integral machines part 12. Nema contactor and starter specifications technical data. Weve read that some nema 4x enclosures are usable in class 1 div 2, but nema 7 enclosures are more heavy duty and prevent combustion within the container. Comparison chart nemaco excellent nema electrical enclosures. Nema 1 enclosures are typically used for protecting controls and terminations from. Provides definitions, minimum requirements and test methods for stabilized constant potentialtype filtered and unfiltered utilitytype battery chargers.