Explosion Proof Junction Box | 1/2 in or 3/4 in NPT | Wall or Ceiling Mounted | Built-in Photocell | Class 1 Div 2 | Class 2 Div 2 |

Product Overview

This explosion proof junction box includes a built-in photocell that provides on/off switching based on ambient light levels. The unit measures 5.6 x 5.6 x 4.2 inches and ships with a 3/8 inch knockout as standard, with a 1/2 inch knockout available as a special order option.

The junction box is rated for use in classified hazardous locations including Class I Division 2 Groups A, B, C, D, Class II Division 1 Groups E, F, G, Class II Division 2 Groups F, G, and Class III environments. It carries UL 844 listing for hazardous locations and UL 1598 listing as suitable for wet locations.

Additional certifications include UL 1598A Marine Outside Type rating and ABS certification. The unit is ETL listed and carries an IP65 rating.

Where This Product Fits Best

This junction box is designed for installations where automatic dusk-to-dawn switching is needed in hazardous classified areas. The Class I Division 2 rating covers locations where flammable gases or vapors may be present under abnormal conditions, while the Class II ratings address environments with combustible dust.

The wet location rating and marine outside type certification make this suitable for exterior installations exposed to weather, including marine and coastal environments. Typical settings include petrochemical facilities, grain handling operations, paint finishing areas, and industrial sites with classified zones requiring outdoor-rated equipment.

Performance and Functional Considerations

The integrated photocell operates on an on/off basis only. When ambient light drops below the photocell threshold, connected lighting activates. When light levels rise, the circuit opens. This is a simple switching function with no dimming capability.

IP65 protection means the enclosure resists dust ingress and low-pressure water jets from any direction. This level of environmental sealing supports reliable photocell operation in exposed outdoor locations without concern for moisture or particulate intrusion affecting internal components.

Installation and Long-Term Use

The junction box mounts to walls or ceilings. Standard units include a 3/8 inch knockout. If 1/2 inch entry is required for conduit sizing, specify the special order knockout option at time of purchase.

The compact 5.6 x 5.6 x 4.2 inch footprint allows installation in tight spaces typical of hazardous location equipment layouts. Over the service life, the photocell requires no manual intervention for daily on/off cycling. Maintenance access follows standard practices for explosion proof enclosures in classified areas.

How This Fixture Is Commonly Used

Facility operators use this junction box to automate exterior or area lighting in classified zones without installing separate control equipment. The photocell eliminates manual switching for lights that need to operate from dusk to dawn, reducing personnel entry into hazardous areas for routine lighting control.

In practice, this unit serves as the control point between supply wiring and the lighting fixture. Once installed and wired, the photocell handles daily cycling automatically. There are no settings to adjust during normal operation.

Safety, Certifications, and Warranty

This junction box is UL 844 listed for hazardous locations and UL 1598 listed as suitable for wet locations. It holds UL 1598A Marine Outside Type certification and ABS certification. The unit is ETL listed.

Hazardous location classifications covered include Class I Division 2 Groups A, B, C, D, Class II Division 1 Groups E, F, G, Class II Division 2 Groups F, G, and Class III. We provide a 5-year warranty on this product.

Frequently Asked Questions

What knockout sizes are available?
Standard units ship with a 3/8 inch knockout. A 1/2 inch knockout is available as a special order option.

Does the photocell dim or just switch on and off?
The photocell provides on/off switching only. There is no dimming function.

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

Is this rated for outdoor wet locations?
Yes. The unit carries UL 1598 wet location suitability and an IP65 rating.

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.