Explosion Proof Junction Box | Class 1 Div 1 | Class 1 Div 2 | 3/4 NPT

Product Overview

This explosion proof junction box is designed for use in classified hazardous locations where ignitable concentrations of flammable gases, vapors, or combustible dusts may be present. The enclosure is rated for Class I Division 1 and Division 2, Class II Division 1 and Division 2, and Class III environments, covering a wide range of industrial settings with atmospheric hazards.

The junction box features 3/4 NPT knockouts as standard and measures 5.6 x 5.6 x 4.2 inches. Construction carries an IP66 rating, and the enclosure is UL listed for wet locations and marine outside type applications.

Where This Product Fits Best

This junction box is appropriate for facilities operating under Class I Division 1 conditions involving Groups C and D gases, and Class I Division 2 conditions involving Groups A, B, C, and D. It also covers Class II Division 1 environments with Groups E, F, and G dusts, and Class II Division 2 environments with Groups F and G dusts. Class III locations with fibers and flyings are also within scope.

Typical environments include petrochemical plants, grain handling facilities, paint spray booths, fuel dispensing areas, and manufacturing operations where dust or vapor accumulation creates hazardous classifications. The marine outside type rating makes this enclosure suitable for offshore platforms and shipboard installations exposed to saltwater atmospheres.

Performance and Functional Considerations

The IP66 rating means this enclosure is sealed against dust ingress and protected against powerful water jets from any direction. This allows installation in washdown areas, outdoor locations, and environments where high-pressure cleaning is routine.

The 3/4 NPT knockouts accommodate standard conduit connections used in industrial electrical systems. The 5.6 x 5.6 x 4.2 inch dimensions provide working space for wire terminations and splices within the constraints of a compact footprint suitable for junction box applications in hazardous locations.

Installation and Long-Term Use

Installation must follow NEC Article 500 requirements for hazardous location wiring methods. All conduit entries must use listed explosion proof fittings appropriate for the specific classification and group. Proper sealing and bonding practices are critical to maintaining the integrity of the classified installation.

The wet location and marine ratings allow exposure to moisture, humidity, and corrosive coastal atmospheres without compromising the enclosure. Routine inspection and maintenance should follow facility protocols for hazardous location electrical equipment.

How This Fixture Is Commonly Used

This junction box serves as a transition point, splice enclosure, or pull point in conduit runs through hazardous classified areas. Electricians and maintenance personnel use it to make wire connections while maintaining the integrity of the explosion proof wiring system.

In day-to-day operation, the enclosure remains sealed. Access is only required when modifications or repairs to the circuit are necessary. The compact size allows placement in tight locations along conduit runs without requiring excessive wall or mounting surface area.

Safety, Certifications, and Warranty

This junction box is UL 844 listed for hazardous locations. It is also UL 1598 listed for wet locations and UL 1598A listed as marine outside type. ABS certification is included for marine vessel applications.

We provide a 5-year warranty on this junction box.

Frequently Asked Questions

What hazardous location classifications does this junction box cover?
Class I Division 1 Groups C and D, Class I Division 2 Groups A, B, C, and D, Class II Division 1 Groups E, F, and G, Class II Division 2 Groups F and G, and Class III.

What is the conduit entry size?
The junction box has 3/4 NPT knockouts.

Can this be installed outdoors or in wet areas?
Yes. The enclosure is IP66 rated and UL listed for wet locations. It also carries a marine outside type rating.

What are the dimensions?
5.6 x 5.6 x 4.2 inches.

What is the warranty period?
5 years.

Application Questions and Clarification

This product description reflects the provided specifications, ratings, and configuration options. For questions related to site-specific conditions, electrical compatibility, control integration, or application requirements not addressed in the provided data, our team is available to provide clarification.