Neo-Dyn products are used worldwide in various applications. Some of the products of Neo-Dyn are gauge pressure switches, vacuum gauge pressure switches, differential pressure switches and temperature switches. Switches for general use are categorized by NEMA standards. The standard line of Neo-Dyn is one of the broadest in the industry.
Neo-Dyn Switches
Pressure Switches
General Purpose
100P NEMA 4 & 13
101P NEMA 4 & 13
105P/105PP NEMA 1 & 2
110P NEMA 4 & 13
115P/115PP NEMA 4 & 1312
125P NEMA 4 & 13
130P NEMA 4 & 13
131P NEMA 4X & 13
132P NEMA 4 & 13
142P NEMA 4 & 13
200P NEMA 4 & 13
201P NEMA 4 & 13
225P NEMA 4 & 13
231P NEMA 4X & 13
232P NEMA 4 & 13
Hazardous Area
100P Division 2
100P NEMA 4X, 7, 9 & 13
100P NEMA 4X, 7, 9 & 13
110P Division 2
110P NEMA 4X, 7, 9 & 13
112P NEMA 4X, 7, 9 & 13
115P/115PP NEMA 4X, 7, 9 & 13
122P NEMA 4X, 7, 9 & 13
123P NEMA 4X, 7, 9 & 13
125P NEMA 4X, 7, 9 & 13
130P NEMA 4X, 7, 9 & 13
131PX NEMA 4X, 7, 9 & 13
132P NEMA 4X, 7, 9 & 13
142P NEMA 4X, 7, 9 & 13
225P NEMA 4X, 7, 9 & 13
231P NEMA 4X, 7, 9 & 13
232P NEMA 4X, 7, 9 & 13
What Are NEMA Standards?
The National Electrical Manufacturers Association (NEMA) is an industry association for two types of manufacturers. The types are those who make equipment for the generation, transmission, distribution, control, and end use of electricity, and manufacturers who make medical imaging equipment.
NEMA publishes standards that cover the design, production, and distribution of electrical products such as:
- electrical switches
- electrical enclosures
- electrical insulating materials
- lighting systems
- residential and commercial controls
- medical imaging systems
NEMA standards exist to help provide electrical products that are safe and appropriate for the service and location where they will be used. They help to eliminate misunderstandings between the customer and the manufacturer by providing uniform definitions and design standards. NEMA standards define a product, process, or procedure, addressing areas such as:
- Nomenclature
- Materials and composition
- Equipment performance
- Construction
- Dimensions and tolerances
- Safety
- Operating characteristics
- Testing and ratings
- The location and service
In some cases NEMA adopts standards created by other organizations. For example, NEMA has adopted ANSI Z535 which covers safety signs and labels. It is numbered as NEMA Z535.
To give some examples of the wide range of electrical products NEMA covers, the following are a few of the titles out of hundreds of NEMA standards:
- NEMA ICS 1-2000 (R2005, R2008) – Industrial Control and Systems: General Requirements
- NEMA ICS 18-2001 (R2007) – Motor Control Centers
- NEMA PE 7-1997 (R2003) – Communications-Type Battery Chargers
- NEMA RE 2-1999 – Electrical Insulating Varnish
- NEMA TP 3-2000 – Standard for the Labeling of Distribution Transformer Efficiency
- NEMA VE 2-2006 – Cable Tray Installation Guidelines
- NEMA LSD 65-2012 – NEMA Guide to Emergency Lighting
What Are NEMA Ratings?
Although the NEMA organization oversees a variety of responsibilities in the electrical manufacturing industry, they are most closely associated with the term “NEMA ratings” and the type of enclosure an electrical component is built with.
New NEMA ratings are published every fifth year and are used to protect electrical equipment from damage due to liquids, dust, and/or corrosive chemicals.
It is not mandatory for all electrical components to be designed or built with a NEMA enclosure. Instead, NEMA ratings are merely used as an industry standard and are completely voluntary. At PSI Power & Controls, our electrical equipment is custom-built using NEMA standards
What Do NEMA Ratings Mean?
- NEMA 1 – NEMA 1 enclosures are constructed for indoor use and provide protection against human contact with electrically-charged, live electrical parts. It also protects the equipment from falling debris (dirt).
- NEMA 2 – A NEMA 2 enclosure is, for all intents and purposes, the same as a NEMA 1 enclosure. However, a NEMA 2 rating additional protection than the NEMA 1, including protection from light dripping or splashing of water (drip-proof).
- NEMA 3R, 3RX – NEMA 3R and 3RX enclosures are engineered for indoor or outdoor use and protect against rain, sleet, snow, dirt, and prevents the formation of ice on its enclosure.
- NEMA 3, 3X – NEMA 3 and 3X enclosures are rain-tight, sleet-tight, and dust-tight and are made for both indoor and outdoor us. NEMA 3 and 3X designates added protection against dust beyond a NEMA 3R or 3RX enclosure.
- NEMA 3S, 3SX – NEMA 3S and NEMA 3SX enclosures benefit from the same protection as a NEMA 3, however provides protection when ice forms on the enclosure and will remain operable when covered in ice.
- NEMA 4, 4X – NEMA 4 and NEMA 4X enclosures are intended for indoor or outdoor use and provide the same protections as a NEMA 3 enclosure with additional protection against water ingress and/or hose-directed water. So, if you need to clean off your NEMA 4 enclosure, you don’t have to worry about water damaging your electrical components.
- NEMA 6, 6P – Offering the same protection as a NEMA 4 enclosure, NEMA 6 offers protection from temporary or prolonged (6P NEMA rating) water submersion up to a designated depth.
- NEMA 7 – Also built for hazardous locations, a NEMA 7 enclosure is explosion proof and made for indoor use (built for hazardous locations).
- NEMA 8 – Offering the same protection as a NEMA 7 enclosure, the NEMA 8 can be used both indoor and outdoor (built for hazardous locations).
- NEMA 9 – NEMA 9 enclosures are dust ignition proof and intended for indoor use in hazardous locations.
- NEMA 10 – NEMA 10 enclosures meet MSHA (Mine Safety and Health Administration) standards.
- NEMA 12, 12K – NEMA 12 and NEMA 12K enclosures are intended for general purpose, indoor use. The NEMA 12 and 12K enclosures protect against dripping and splashing water, are rust resistant, and do not include knockouts (partially punched openings that can be removed to accommodate cables, connectors, and/or conduits).
- NEMA 13 – NEMA 13 enclosures are for general purpose, indoor use. They provide the same protection as the NEMA 12 enclosures, but with added protection against dripping and/or sprayed oils and coolants.
*Note – An enclosure designated with an “X” indicates a corrosion-resistant rating.
If you need more information about Neo-Dyn Pressure Switches please contact Zeco Valve via sales@zecovalve.com. Check also our website: https://zecovalve.com
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