- Customized NEMA Enclosure Solution
- شهادة IP65/IP66
- Stainless Steel, Carbon Steel, Galvanised Steel Material
Custom NEMA 3 Enclosure Manufacturer in China
KDM NEMA 3 enclosure is weather-resistant at the same time equipped to protect against leaking pipes, which makes it suitable for both indoor and outdoor usage. It provides additional protection to users against access to hazardous parts and even to the equipment inside the enclosure towards ingress of solid foreign objects such as falling dirt and windblown dust.
KDM NEMA 3 Enclosure Series
Send your Inquiry on KDM NEMA 3 Enclosure
KDM manufacture NEMA 3 enclosures that are compatible with both indoor and outdoor applications and hold the least demanding rating for outdoor use. We produce top-quality metal enclosures in a variety of types and materials, all at competitive prices; quick delivery is our specialty. Get an instant quote for your next NEMA enclosure order.
- القدرة التصنيعية
- دليل الشراء
آلة قطع بالليزر عالية الأداء بقوة 4000 واط، بدقة +/- 0.05 مم. بدون نتوءات أو خدوش.
معدات لحام مرنة متعددة الوظائف، عالية الدقة، لا تشوه.
دقة الانحناء +/- 0.5 مم، سطح أملس بدون علامات الانحناء.
أكثر من 10 عمال ذوي خبرة في اللحام، والمظهر العام مثالي.
آلات الرغوة عالية السرعة والدقة، حشوة سريعة ومؤهلة
فريق التجميع الخبير، جودة التجميع المتسقة لكل علبة KDM
KDM NEMA 3 Enclosure
KDM NEMA 3 enclosure, if used in outdoor, provide more protection to harmful effects on the equipment due to the ingress of water in the forms of rain, sleet, snow, etc. NEMA 3 enclosure from KDM will also remain undamaged from the formation of ice in the enclosure.
For indoor applications such as industrial structures or labs the metal structure, KDM NEMA 3 enclosure is generally stored in a dry environment but would be equipped to protect against dripping pipes.
Our NEMA 3 enclosures are fabricated to house electrical controls, generator skids, or rotating equipment and protect these electrical components aboard ship docks, on constructions sites, inside tunnels or in subway systems.
While KDM NEMA 3 enclosure may not be suitable for extreme weather conditions, these enclosures can function as outdoor electrical junction boxes to protect wiring and cables. Also, it’s important that engineers should consider the exact location and material of their enclosure.
حاوية NEMA 3
With KDM NEMA 3 enclosure, you can find durable, cost-effective and UV-resistant enclosures. These qualities make them a much safer choice for outdoor environments in both commercial and industrial applications.
With a variety of styles and sizes available, it’s easy to find the NEMA 3 enclosure solution at KDM. For even more options, you can choose from our wide range of products. If you want to custom NEMA 3 enclosure for your own industry, our professional team of engineers and technicians will help you in custom your design which is based on your detailed application. In addition to this, we can handle your urgent orders in short lead time.
KDM with more than 10 years of NEMA 3 enclosure manufacturing experience, we are fabricating both standard and custom NEMA 3 enclosures for our client’s. All of our enclosures, meet the requirements of our customers. At every stage in the manufacturing process, we always collaborate with them. Also, we had passed the IP65/IP66 certification. KDM, with the very LOW MOQ, you can order NEMA 3 enclosure for as low as 1 pc.
At KDM, we manufacture high-quality electrical boxes that meet the NEMA standards. We assure quality, competitive price and a range of NEMA 3 enclosures that are right for your enclosure needs.
With the KDM NEMA 3 enclosure offer, we are sure you can choose the right NEMA 3 electrical enclosure for your unique applications. Send us your inquiry and let us solve your NEMA 3 enclosure problems.
The Ultimate FAQ Guide to NEMA 3 Enclosures
- What does NEMA Type 3 mean?
- How is NEMA 3 different from NEMA 3R, 3S, 3X, etc?
- Are NEMA 3 enclosures used outdoors?
- Do NEMA 3 enclosures protect from explosions and arc flash?
- Do NEMA 3 enclosures protect from corrosion?
- What are common applications for NEMA 3 enclosures?
- How are NEMA 3 enclosures tested?
- How can I be sure of the quality of NEMA 3 enclosures?
- What is NEMA 3 in IP standards?
- How else are NEMA ratings represented?
- What are common designs for NEMA 3 enclosures?
- ما هي الميزات الإضافية التي يتم تضمينها عادةً؟
- هل تؤثر الفتحات والفتحات والتجهيزات وما إلى ذلك على تصنيف العلبة؟
- How do NEMA 3 enclosures maintain thermal environment?
- What materials are used for NEMA 3 enclosures?
- What paints and coatings can be used for NEMA 3 enclosures?
- What are some ways to put symbols on a NEMA Type 3 enclosure?
- ما هي الأشياء الأخرى التي يجب أن أكون على علم بها عند طلب حاوية؟
What does NEMA Type 3 mean?
NEMA stands for رابطة مصنعي الأجهزة الكهربائية الوطنية.
It is an electrical industry trade association that does not certify products, but rather develops standards, and government guidelines.
NEMA 3 complies with certain specifications.
NEMA 3 can be broken down into 3 variations, or levels of protection.
All of these also carry a corrosion-protection option, making Type 3 have altogether 6 subtypes.
Overall, Type 3 provides protection of personnel against accidental contact with live electrical parts.
It is also meant for use both indoors and outdoors, as it is fairly rain-proof, as well as dust-proof.
Also, the enclosure protects inside equipment from snow and sleet, and guarantees that everything will work even if the enclosure is covered with ice.
How is NEMA 3 different from NEMA 3R, 3S, 3X, etc?
NEMA 3R is the same as NEMA 3, except it does not offer as much protection against windblown dust, so it is better for cold inside applications like freezer rooms.
This is because 3R usually lack a few gaskets that other NEMA 3 enclosures have.
NEMA 3S is the same as NEMA 3, but also ensures that any external mechanism is still operable when laden with ice.
NEMA 3X includes added protection against corrosion.
There could also be enclosures with subtype ratings NEMA 3RX and NEMA 3SX.
Subtypes of NEMA 3
Are NEMA 3 enclosures used outdoors?
Yes, NEMA 3 enclosures do protect against water ingress and dust ingress, as well as snow and sleet.
Thus, it is perfectly suitable for outdoor applications.
Do NEMA 3 enclosures protect from explosions and arc flash?
No, NEMA 3 enclosures are not strong enough to withstand an external explosion or contain an internal one.
If you need that kind of protection, you should consider NEMA types 7-10, which are made specifically for hazardous locations.
NEMA enclosures do not protect against قوس كهربائي incidents, so it is the responsibility of personnel to be prepared for them.
Do NEMA 3 enclosures protect from corrosion?
Per se, NEMA Type 3 enclosures do not protect against corrosion well.
However, you can increase the enclosure’s resistance to corrosion with the material you choose to use.
As such, galvanized steel and stainless steel 316 are the best options.
Also, paint coatings can help deter corrosion.
Especially, enamel paint is great for corrosion resistance.
Also, you can order NEMA 3X enclosures, which include protection against corrosion.
What are common applications for NEMA 3 enclosures?
NEMA 3 enclosures are great for indoor and outdoor commercial uses.
These may be junction boxes, utility boxes, outdoor meter cabinets, transformers, generator skids, frequency converters, power conditioners, and rotating equipment.
Typical NEMA 3 box
Because of this type’s resistance to water and ice, such enclosures are great for commercial freezer rooms, ship docks, subway systems, outdoor construction sites, and anywhere else where it gets cold.
If you need an enclosure for a cold indoor location, you can use NEMA 3R.
For more information, check out our الأسئلة الشائعة حول حاوية NEMA!
How are NEMA 3 enclosures tested?
NEMA enclosures are not tested by NEMA, but by third-party laboratories.
ملصقات NEMA can be used to self-declare enclosure ratings.
NEMA 250 outlines all the extensive tests that enclosures undergo to achieve a NEMA label.
For NEMA 3, one of the tests is the rod entry test, which involves inserting a rod of different diameters into openings and vents of the enclosure in an attempt to reach live parts of the circuit.
NEMA 3 enclosures also undergo a rain test for 1 hour.
Rain test chamber
The test is considered passed if there is no significant water accumulation inside the enclosure.
NEMA 3 enclosures are further tested with an external icing test, outdoor dust test, and outdoor corrosion test.
يتضمن اختبار الجليد الخارجي رش العلبة بالماء ثم تبريد الغرفة حتى يتكون 20 مم من الجليد فوق العلبة.
Outdoor icing test
يجب أن يكون الغلاف سليمًا وقابلًا للتشغيل في نهاية الاختبار.
Outdoor dust test involves blasting the enclosure with general-purpose dry cement dust at a rate of 5 pounds (2.3 kg) per minute.
The inside of the enclosure is then inspected for white cement residue
Outdoor corrosion test is included for NEMA Types 3X, 3RX, and 3SX.
It involves making a 5% saline solution (using sodium chloride) and spraying it continuously for 600 hours (25 days).
How can I be sure of the quality of NEMA 3 enclosures?
في KDM، لدينا شهادة ISO9001 التي يمكنك النظر من خلالها.
بالإضافة إلى ذلك، يمكنك إجراء اختبارات مستقلة من قبل طرف ثالث للمرفقات إذا كنت تريد تأكيد الجودة وتقييم المطابقة.
What is NEMA 3 in IP standards?
Although it is difficult to translate one set of standards into another, NEMA Type 3 is roughly comparable to IP54 and IP64.
Both provide good protection against dust and water.
NEMA و IP
How else are NEMA ratings represented?
NEMA 250 standards are also represented as UL 50E and CSA C22.2 No. 94.2.
This is because different certifying agencies use different standards – UL or CSA – so NEMA guidelines can be understood in terms of either one.
CSA is used in Canada, while UL is mostly used in the US.
CSA and UL
What are common designs for NEMA 3 enclosures?
Some common designs for NEMA 3 enclosures include free-standing, floor-mounted, wall-mounted, and pole-mounted.
قائم بذاته, مثبت على الأرض, and walk-in enclosures are used for bigger equipment.
يمكن أن يكون لها باب واحد أو أبواب متعددة، اعتمادًا على متطلباتك.
Such enclosures can also have pedestals, casters, leveling feet, and lifting eyes to help install and move it around.
حاوية قائمة بذاتها
مثبت على الحائط و مثبت على عمود NEMA 3 enclosures are typically small and house fuses and switches.
إنها أقل قدرة على الحركة، ولكنها تشغل مساحة أقل أيضًا.
يتم تثبيتها باستخدام أقواس خاصة يمكن أن تكون خارجية فقط أو تحتوي على عناصر داخلية أيضًا.
حاوية مثبتة على الحائط
Overall, higher NEMA ratings benefit from U-shaped designs since those require less seam welding, which works well with ice and corrosion protection.
حاوية على شكل حرف U (الجزء العلوي)
Of course, we also offer مرفقات مخصصة.
ما هي الميزات الإضافية التي يتم تضمينها عادةً؟
يمكنك طلب فتحات التهوية، والنوافذ، والأبواب المفصلية، والأقفال، وأنظمة إدارة الكابلات، وغير ذلك الكثير.
فتحات التهويةبالإضافة إلى المراوح الإشعاعية، توفر مسارًا للحرارة للهروب من خلاله، مما يؤدي إلى تبريد المكونات الكهربائية للغلاف.
توفر فتحات التهوية تدفقًا أكثر سلبية للهواء، بينما تعمل المراوح على تحريك الهواء بشكل نشط وتستخدم لتبريد المعدات التي تسخن بسرعة.
وهذا يطيل عمرهم ويقلل من احتمالية حدوث أعطال.
إذا كنت تريد تضمين فتحة تصريف، فيجب أن يكون هناك أيضًا قابس قابل للإزالة.
Radiating fan in an enclosure
كما أنها تعمل على تثبيت ضغط الهواء داخل العلبة، مما يمنع التكثيف الذي قد يؤدي إلى إتلاف المكونات الكهربائية للعلبة.
Plus, vents and fans can be further upgraded to air conditioners and heat exchangers.
نوافذ مساعدة الموظفين على فحص المكونات الكهربائية بطريقة سريعة وغير جراحية.
And if something goes wrong, a window helps to see what is happening right away.
Plus, infra-red windows help protect workers from قوس كهربائي accidents by letting them see heat buildup.
Enclosure with a window and a lock
أبواب مفصلية التحكم في كيفية ومدى فتح الباب أو غطاء العلبة.
This also includes a variety of handles that you can request as well.
You can choose between continuous, offset, and other types of hinges.
أقفال, latches, and clamps add a layer of security to your NEMA 3 enclosure, making sure no one tampers with it or accidentally accesses its electrical components.
قد تتضمن أنظمة إدارة الكابلات خطافات ورفوفًا وميزات تنظيمية أخرى.
We also offer secondary features like casters, lifting eyes, file pockets, drip caps, switches, lights, and anything else you request.
جيب الملف
Casters help move the enclosure around; lifting eyes are for heavy enclosures that need to be lifted to be carried around; file pockets store operating manuals; drip caps protect the enclosure from splashing water; solar shields protect against UV rays; switches and lights help operate the equipment inside the enclosure.
هل تؤثر الفتحات والفتحات والتجهيزات وما إلى ذلك على تصنيف العلبة؟
Individual fittings, vents, knockouts, etc – ideally – should have a better NEMA rating than the enclosure.
But generally this is not possible, so these features should have the same rating as the overall structure.
How do NEMA 3 enclosures maintain thermal environment?
بشكل عام، يمكن أن تحتوي الحاويات على مكيفات هواء، ومبردات، ومبادلات حرارية، وشرائط سخان للتحكم في درجة الحرارة داخل الحاوية.
This is done to prevent overheating, but also freezing of equipment.
If cold environments are your concern, then heat exchangers and heater strips may be of interest to you.
المبادلات الحرارية هي أنظمة حلقة مغلقة وسهلة الصيانة.
They push hot air in colder compartments, which results in an equalized temperature and pressure.
المبادل الحراري
تستخدم شرائط التسخين الكهرباء لتسخين الهواء داخل العلبة لحماية محتوياتها من درجات الحرارة المنخفضة والتكثيف والتآكل اللاحق في الداخل.
شريط السخان
There can also be fan filters and small positive temperature coefficient heaters.
يتراوح أداء سخانات العلبة من 50 إلى 1200 واط، اعتمادًا على حجم العلبة الخاصة بك.
What materials are used for NEMA 3 enclosures?
The materials used for NEMA 3 enclosures aren’t different from materials used for other types of enclosures.
يمكن أن تكون مصنوعة من الفولاذ الكربوني, فولاذ مجلفن، و الفولاذ المقاوم للصدأ - عادة من الدرجات 304، 316، أو 316L.
عادةً ما يكون الفولاذ الكربوني أكثر باهتة من الفولاذ المقاوم للصدأ.
كما أنها مغناطيسية وأكثر قابلية للطرق حيث أنها تحتوي فقط على الحديد والكربون.
This steel is also prone to corrosion, so it is not recommended for NEMA types that are designed for the outdoors.
يتم إنشاء الفولاذ المقاوم للصدأ عن طريق إضافة الكروم والنيكل والموليبدينوم إلى سبيكة الحديد والكربون.
الفولاذ المقاوم للصدأ مقابل الفولاذ المجلفن
تختلف درجات الفولاذ 304 و 316 في محتوى جميع المواد المضافة.
For NEMA Type 3 enclosures, stainless steel grade 304 is most recommended.
الفولاذ المجلفن مطلي بطبقة واقية من الزنك تمنع التآكل.
يعتبر هذا النوع من الفولاذ أكثر تكلفة وأثقل وزنًا من الفولاذ المقاوم للصدأ.
Another type of steel that can be used is cold-rolled steel, which is thinner and more dense than normal steel – and thus, it is stronger.
عند استخدام الفولاذ، يجب على الشركة المصنعة أن تأخذ في الاعتبار مقياسًا معينًا أو سمكًا للصفائح المعدنية ضروريًا للامتثال لمعايير NEMA.
NEMA 3 enclosures use 12-14 gauge steel, which is about 1.9-2.6 mm.
الألياف الزجاجية إنه قوي جدًا، ويمكنه تبديد الحرارة، وعزل الكهرباء، مما يقلل من تأثير التداخل وإمكانية حدوث صدمة كهربائية.
يتم تصنيعها من ألياف زجاجية توضع في البلاستيك.
Fiberglass enclosure
يمكن أيضًا تصنيع العبوات من سبائك الألومنيوم.
إنها ليست بالضرورة أفضل من سبائك الفولاذ، ولكن يمكن أن تكون كذلك اعتمادًا على ما تسعى إليه وما هي احتياجاتك.
تمامًا مثل درجات الفولاذ، يمكن أن تكون سبائك الألومنيوم إما من السلسلة 5052 أو 6061.
الألومنيوم مقابل الفولاذ المقاوم للصدأ
Both are lightweight, but 5052 is more weldable, whereas 6061 has a higher resistance to corrosion. Also, 6061 is more expensive.
يحتوي الألومنيوم على طبقة من الأكسيد في الأعلى مما يمنع التآكل.
This material is especially good for enclosures exposed to solvents, petrochemicals, some acids, most sulfates and nitrates.
But NEMA 3 enclosures are not made for these environments, so aluminum is not common for them.
Also, our windows are made from polycarbonate and ABS.
يعتبر البولي كربونات أكثر مقاومة للتآكل، في حين أن مادة ABS أرخص.
إذا كنت ترغب في معرفة المزيد، أرسل استفسارك الآن للتشاور!
What paints and coatings can be used for NEMA 3 enclosures?
إن علبنا محمية بشكل جيد، ولكن الطلاء المناسب يمكن أن يضيف الحماية لها أيضًا.
يمكنك اختيار طبقات الطلاء المينا أو المسحوق بأي لون.
طلاء المينا يتميز بلمسة نهائية لامعة ومقاوم لظروف الطقس المختلفة.
تُستخدم عادةً دهانات المينا المحددة مثل مينا الإيبوكسي ومينا البولي يوريثين للأسوار الصناعية لأنها مقاومة للتآكل.
مسحوق الطلاء is deposited with the electrostatic force, and is quicker and easier than enamel.
كما أنه أكثر مرونة في المظهر، مما يتيح لك خيار التشطيبات اللامعة وغير اللامعة.
تشطيبات طلاء المسحوق
We also offer anodizing and alodining coatings.
الأكسدة يستخدم الطلاء الأنودات لأكسدة المعدن، عادةً الألومنيوم، لزيادة سمكه من أجل مقاومة أفضل للتآكل.
Steel is not typically anodized because it can actually speed up the corrosion of the metal.
طلاء الألودين، المعروف أيضًا باسم طلاء تحويل الكروماتيتم استخدامه لتحضير الفولاذ والألمنيوم للطلاء، وكذلك لمنع التآكل.
طلاء الألودين
This is a cheaper process than anodizing, and can be recognized by its characteristic greenish-yellow hue, unless it is painted over.
There can also be anti-graffiti and anti-poster coatings to protect your enclosure from vandalism.
NEMA 3 enclosures most often use powder coating.
يمكننا توفير أي طلاء بأي لون وتشطيب، لذلك اتصل بنا اليوم!
What are some ways to put symbols on a NEMA Type 3 enclosure?
Our customizing services include engraving and silk-screening.
Silk Screening is the easiest and most affordable method of customization.
Any flat side of the enclosure can be silk-screened with labels, warnings, serial number, your company name and logo.
However, silk-screening on metal like stainless steel or aluminum can be worn off or scratched off, but a clear powder coat helps to prevent that.
طباعة الحرير
Engraving the enclosure is another method of customizing your enclosures.
يعد هذا الخيار أكثر تكلفة ويستغرق وقتًا أطول، ولكنه أيضًا أكثر استمرارية من الطباعة الحريرية.
A little bit of metal is removed from the surface of the enclosure in the design of the logo or symbol.
عادة، تتم إزالة حوالي 0.005 بوصة أو 0.010 بوصة من المعدن من السطح.
بمجرد إزالة المعدن، يتم ملؤه بطلاء إيبوكسي بأي لون يتناسب مع متطلباتك.
نقش
بالإضافة إلى الرموز، ينبغي أن تكون هناك علامات أخرى.
إذا كان من الضروري تثبيت المعدات في اتجاه معين، فيجب وضع علامة على العلبة.
Also, areas where live parts will be also has to have a mark.
يجب أيضًا نقش أو طباعة أي علامات تحذيرية أو خطرة على العلبة أيضًا.
ما هي الأشياء الأخرى التي يجب أن أكون على علم بها عند طلب حاوية؟
هناك بعض الأخطاء الشائعة التي يرتكبها الناس.
وتشمل هذه الأخطاء اختيار نوع NEMA الخاطئ، أو المادة الخاطئة، أو الحجم الخاطئ، أو التصميم الخاطئ، وتجاهل الميزات.
NEMA types have certain environments they are suited for.
NEMA 3 is built for non-hazardous, indoor and outdoor locations with normal air pressure, rain or dripping water, some dust, snow, sleet, and ice.
NEMA 3 usually uses stainless steel 304 or galvanized steel to increase resistance to corrosion.
يعتمد حجم وتصميم العلبة على المعدات الكهربائية المحددة التي تخطط لوضعها هناك.
However, NEMA 3 enclosures are usually medium-sized or big.
أما بالنسبة للتصميم والميزات، فهي خاصة بكل حالة على حدة، لذا استشر الشركة المصنعة الخاصة بك للحصول على النصيحة.
Recent NEMA 3 Enclosure Order
FAQ Guide
What is NEMA 3 Enclosure?
A NEMA 3 enclosure is designed for outdoor use only.
It protects from water ingress such as snow, sleet, and rain.
NEMA 3 enclosure also protects from windblown dust and ice formation.
What is the Purpose of NEMA 3 Enclosure?
NEMA 3 enclosure is manufactured to house rotating equipment, generator skids, and electrical controls.
It protects the equipment in the subway system, inside tunnels, or on construction sites.
What Are the Accessories To Add On NEMA 3 Enclosure?
Most NEMA 3 enclosures can be fully customized by your manufacturer.
It maintains the functionality and your protection requirements by adding the following accessories:
1. Temperature and Air Control
- منظمات الحرارة
- Vents and air filters
- Sun shields
- Axial fans
- Enclosure breathers
- Air conditioner
- Insulation
- سخانات
2. Lighting and Interior
- Power supply
- Slide-out drawers
- Enclosure lights
- Shelves
- Light switches
- EIA racks
- Viewing windows
3. Mounting and Exterior
- U-bolts
- Sub-panels/backplates
- Lifting eyes
- Vibration control
- Caster and wheels
What Are the Finish Options for NEMA 3 Enclosure?
NEMA 3 Aluminum Enclosures
NEMA 3 aluminum enclosure has a unique combination of lightweight, strength, and corrosive resistance.
They are suitable for industries like oil & gas, solar, traffic, and telecommunication application.
NEMA 3 Carbon Steel Enclosure
The fabrication of the NEMA 3 carbon steel enclosure is categorized by three typical configurations.
It is galvanized, cold-rolled, and hot-rolled.
Most of the NEMA 3 carbon steel enclosure is not corrosion resistant.
NEMA 3 Stainless Steel Enclosure
This enclosure offers a high level of corrosion protection.
It also provides exceptional strength, outstanding heat/fire resistance, consistent long-term value, and durability.
What is the Difference Between NEMA 3 Enclosure and NEMA 3R Enclosure?
NEMA 3 enclosure has the same protection as NEMA 3R.
However, NEMA 3R subtracts the windblown dust protection.
The NEMA 3R has the same protection as NEMA 3 regarding the formation of ice, snow, sleet, and rain.
This enclosure is often used for protected structure enclosure.
What is the Advantage of NEMA 3 Enclosure?
A NEMA 3 enclosure offers protection from solid outdoor grade.
It comes in numerous feature sets and styles.
Below are the primary advantages of NEMA 3 enclosure:
- Protection against dirt particles and airborne dust
- Protection against dripping and splashing water
- Protection against precipitation, including snow, rain, and sleet
- Protection against contact from personnel
What is the Disadvantage of NEMA 3 Enclosure?
NEMA 3 enclosure does not protect against:
- Explosions
- Prolonged or temporary submersion
- Hose-directed water jets
- Impact