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

SKU: MLLG-E-PC-C1D2-JB Web ID: 2063
Starting at: $519.90
Built to Order 6 Weeks
This junction box is a practical choice for hazardous-location lighting where controlled on/off operation is needed through its built-in photocell. Its UL 844 classifications cover specified Class I, II, and III areas, while UL 1598 wet-location suitability, UL 1598A marine outside type listing, ABS approval, and IP65 rating support use in wet and marine environments. Surface wall or ceiling mounting and NPT connection suit industrial and marine lighting installations.

Dwayne Kula | President, CTO and Founder

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Product Specifications

ETL Listed - Certified for Product Safety Compliance to North American StandardsClass 1 Division 2 - UL844 Certified for Explosive Atmospheres5 Year Unlimited Usage Warranty

UL Specs

  • UL 844 Hazardous Locations
  • 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
  • UL 1598 Suitable for Wet Locations
  • UL 1598A Marine Outside Type
  • ABS

Key Features

BrandLED Lighting Supply

Durable Construction

IP RatingIP65
CertificationsETL
Warranty5 years

Measurements

Dimensions (in)5.6 x 5.6 x 4.2

Features/Accessories

  • Photocell

Product Lighting Layout Estimator

Use this estimator to calculate approximate fixture count, spacing, and average foot-candles for a simple rectangular space using the selected LED fixture. Enter your room dimensions, mounting height, target foot-candles, light loss factor, and room/layout condition to generate a preliminary lighting layout. When IES photometry is available, workplane height and room reflectance controls are shown.

Project Inputs

Loading fixture information...

Estimated Results

Fixtures --
Layout --
Estimated Avg FC --
Approx. Spacing --
Fixture Offset --
Calculation Method: --
Top-Down Fixture Layout Fixture positions and estimated floor light levels
Lower estimated FC Near target Higher estimated FC

Estimated average foot-candles are preliminary and should be verified with a lighting plan for project-critical applications.

Room / Layout Condition: This field is used only when usable IES photometry is not available. In fallback mode, it acts as a simplified room utilization factor for reflectance, fixture distribution, racking, obstructions, and how much fixture light reaches the work area. Open / light-colored spaces use 0.90, typical warehouses or shops use 0.75, racked or obstructed spaces use 0.60, and dark or complex spaces use 0.45. When IES photometry is active, this field is hidden and the estimator uses the selected workplane height, LLF, and simplified reflectance adjustment instead.

Photometry / Simulation Note: When usable IES photometry is available for the selected fixture, this estimator uses the fixture’s IES candela data, selected workplane height, light loss factor, and simplified reflectance adjustment to estimate fixture count, average foot-candles, and visual light distribution. The reflectance adjustment is a conservative approximation and is not a full zonal-cavity, radiosity, or professional photometric room calculation. When IES photometry is not available, the estimator uses a simulated beam model based on lumens, mounting height, room/layout condition, light loss factor, and beam angle.

Preliminary Estimate Only: This estimator is intended for simple square or rectangular spaces and should be used as a planning aid, not a final photometric lighting plan. Actual light levels may vary based on fixture optics, selected IES file, mounting conditions, workplane height, ceiling height, surface reflectance, obstructions, controls, voltage, installation conditions, and site-specific requirements. Project-critical applications should be verified with a formal lighting plan.

Need Verified Light Levels?

This estimate is a starting point. Warehouses, industrial facilities, hazardous locations, sports areas, schools, healthcare spaces, public areas, and code-sensitive projects may require a reviewed lighting layout before purchase or installation.

Estimator Version 2.9.21

Product Overview

This Class I, Division 2 explosion proof junction box provides an NPT connection point for hazardous location lighting installations. It can be wall or ceiling mounted and includes a built-in photocell for on/off operation.

Adjustability and Control Options

The integrated photocell provides automatic on/off control only. It is suited to installations requiring lighting to switch based on ambient light conditions.

Build Quality and Physical Characteristics

The junction box measures 5.6 x 5.6 x 4.2 inches and has an IP65 rating. A 3/8 inch knockout is standard; a 1/2 inch knockout is available by special order.

Where This Product Fits Best

This junction box is designed for hazardous classified locations covered by its listed Class and Division ratings, including lighting installations where photocell-controlled operation is needed.

  • hazardous location lighting
  • explosion proof lighting
  • paint booth lighting
  • chemical processing facility lighting
  • oil and gas facility lighting
  • refinery lighting
  • marine environment lighting
  • offshore rig lighting

Safety, Certifications, and Warranty

The junction box is UL 844 listed for hazardous locations: 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. It is UL 1598 suitable for wet locations, UL 1598A Marine Outside Type, ETL certified, and ABS rated. Warranty coverage is 5 years.

Frequently Asked Questions

Q: Does this explosion proof junction box include a photocell?

A: Yes. This explosion proof junction box includes a built-in photocell with on/off operation only.

Q: What knockout size is supplied with this junction box?

A: This explosion proof junction box has a standard 3/8 inch knockout. A 1/2 inch knockout is available by special order.

Web ID: 2063