Electrical Junction Box Explosion Proof

[Zita Lifland]

TheHan Ex NEC 500 Class 1, Div 2 product series is an extension of the Han Ex product line. This series meets all the electrical requirements for implementing of high-quality connectivity solutions in hazardous locations in the Americas.

Explosion proof connectors are designed to be used in intrinsically safe circuits of categories "ia", "ib," and "ic" of explosion protection method "Ex .." The series can be used in Zones 0, 1, and 2 for gas and Zones 20, 21, and 22 for dust. The "Ex i" protection method guarantees intrinsically safe electrical circuitry that is limited for maximum voltage, current, capacity, and inductance. Explosion proof connectors are ideal for a wide range of applications where the substance being processed or transported is potentially explosive or combustible.

NEC 500 is the regulatory standard for electrical connectivity in hazardous/explosive locations in the Americas that compiles to requirements according to the EN 60079 standard. Similarly, the ATEX Directive complies to the EN 60079 standard for the European market and the IECEx standard complies to the EN 60079 standard internationally.

This hazardous connection interface is designed to meet the requirements for ignition protection under a Class 1 Div 2 environment according to the American standard NEC 500 (National Electrical Code). This standard describes different areas of possible explosive atmospheres and complies to the EN 60079 standard for explosive location applications. The picture to the left shows an environment where different classes and divisions may reside. According to NEC 500 for Class 1 Div 2, the presence of flammable gas, vapor or dust, classifies a location as a Class 1 environment. Furthermore, Class 1 is subdivided into three divisions depending on the probability of flammable substance in the respective location sufficient enough to ignite with a spark. Division 2, in normal operation, is defined as an area with low probability of containing dangerous concentration of flammable substances and also contains the substance in a closed system.

An explosion proof junction box is a junction box that is UL approved for explosion or hazardous locations. It allows you to mount and connect your explosion proof fixture to the ceiling. In the case of our product, it is both C1D1 andC1D2 rated.

If you are installing any explosion proof rated fixtures in an area, then you will need explosion proof electrical junction boxes and conduit. It is not enough to use just explosion proof rated fixtures and standard conduit and junction boxes. If this is an existing installation, you usually can reuse the junction box and conduit already in place.

In order to protect signal and power distribution networks from harsh environmental conditions and explosion hazards, various types of flameproof terminal boxes and junction boxes are available.

Suitable ingress protection and ambient temperature ranges as well as rugged enclosure materials such as copper-free aluminum and stainless steel ensure long-term durability and safe operation.

The F* TB series terminal and junction boxes are based on Ex d or Ex d and Ex tD certified enclosures, and manufactured from marine-grade aluminum with increased corrosion resistance.

Pepperl+Fuchs is a leading developer and manufacturer of electronic sensors and components for the global automation market. Continuous innovation, enduring quality, and steady growth have been the foundation of our success for more than 70 years. Pepperl+Fuchs employs 6,300 people worldwide and has manufacturing facilities in Germany, USA, Singapore, Hungary, Indonesia and Vietnam, most of them ISO 9001 certified. Pepperl+Fuchs does not sell personal data.

SUREALL SR series explosion proof reduction bushing is conduit connector, reducer, enlarger in hazardous classified area to connect one threaded end of conduit to another rigid conduit, one threaded hub of explosion proof lighting, explosion proof enclosure, explosion proof panel and explosion proof fittings to another conduit, one threaded hub of explosion proof enclosure to another metal explosion proof cable gland or fittings, whereas, the thread of ends are different, like NPT3/4" to NPT 1/2".

SUREALL SU series explosion proof conduit union is the same function of explosion proof SA series explosion proof conduit adapter, but it is specially designed with a detachable assembly part for undocking the connected explosion proof lighting and explosion proof enclosure from the conduit with no need to disassembly the heavy shape device to save the labor, this conduit union also can be used as explosion proof 3 piece coupling.

Myers hub is explosion proof conduit hub to worked as conduit connector to end up the conduit. SUREALL explosion proof conduit hub SH series can be installed at the threaded hubs of cable entry of the wall of explosion proof enclosure to bring cable into the terminal blocks and electrical device, it is widely used for class 1 div 1 explosion proof enclosure for oil and gas industry.

No, liquid tight conduit is not explosion proof, but if you install SUREALL SL series explosion proof liquid-tight connector on both ends of liquid tight conduit, then the liquid tight conduit can be used as class 1 div 2 hazardous location, zone 1 explosive atmosphere.

Explosion proof connector, also called explosion proof fittings, explosion proof electrical fittings, flame proof fittings, flameproof electrical fittings, hazardous location fittings, explosion proof electrical connectors, explosion proof cable connectors, hazardous area plugs, 1 2 explosion proof union, explosion proof reducing bushing, 1 to 3 4 reducing bushing, 3 4 to 1 2 reducer bushing, 1 2 to 3 4 enlarger, 3 4 emt pull elbow, explosion proof 3 piece coupling.

Explosion proof connector are cylinder shape union widely used to connect conduit to explosion proof enclosure, conduit, conduit fittings, junction box or device enclosure in rigid conduit system in hazardous location. Through flame proof metal body isolating the explosion ignition inside the body or increased safety body containing electrical spark, explosion proof connector permit enclosures removal without conduit disassembly, change the conduit direction in tighter space and allow for expansion or contraction of conduit size to facilitate modification. Material ranges from carbon steel, nickel plated brass to stainless steel.

Explosion proof connector can be used in many working places, now we are listing the main usage fields from four aspects, function, hazard class division, usage by application and alternative for brand-new models.

Explosion proof connector can be installed to change the thread type and size on the housing of explosion proof light and explosion enclosure, change the conduit direction for rigid conduit system, fix the rigid conduit and liquid-tight conduit tightly to explosion proof enclosure in explosive atmosphere.

Depends on the application field, explosion proof connector can be used in where explosion proof lighting and explosion proof enclosure installed, such as liquefied nature gas plant, liquefied petroleum gas plant, and chemical plant anywhere there is combustible gas, vapor, mist and dust.

For Clarification Purposes, Nema Enclosures Manufacturing does NOT provide Nema 7 or Explosion Proof Enclosure. In an environment where hazardous gases or dusts are always present a Class 1, Division 1 rated is required in North America and EX d for the rest of the world. Unfortunately this is not something we manufacture. Explosion proof enclosures are typically made from cast aluminum and then machined to meet the requirements of containing a potential explosion.

NEMA Type 4 Enclosures are intended for indoor or outdoor use primarily to provide a degree of protection against windblown dust and rain, splashing water, hose directed water, and damage from external ice formation.

NEMA Type 4X Enclosures are intended for indoor or outdoor use primarily to provide a degree of protection against corrosion, windblown dust and rain, splashing water, hose directed water; and damage from external ice formation.

The National Electrical Code (NEC) defines hazardous locations as areas where fire or explosion conditions may exist due to the presence of flammable gases or vapors, flammable liquids, combustible dusts, or easily ignitable fibers or flyings in sufficient quantities or concentrations to present a potential explosion hazard.

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