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

SKU: MLLG-E-EXPL-JunctionBox Web ID: 1677
Starting at: $219.56

Back in Stock 9/24

This fixture is a strong choice for hazardous locations due to its UL 844 and ABS certifications, supporting use in environments with explosive gases, dusts, or fibers, as well as marine and offshore settings. Its compact 5.6 x 5.6 x 4.2 inch housing and IP66 rating allow reliable installation in tight spaces exposed to dust, water jets, or salt spray. The fixture is well-suited for chemical plants, refineries, grain processing, wastewater treatment, and marine vessels. 

Cory Peterson | VP of Marketing and Sales Operations

Prefer to Order Online? Select Options

20 in stock

    Product total

    Options total

    Sub-Total

    Product Specifications

    CSA Listed - Verified for Electrical Safety and PerformanceClass 1 Division 1 - UL844 Certified for Hazardous LocationsClass 1 Division 2 - UL844 Certified for Explosive Atmospheres5 Year Unlimited Usage Warranty

    UL Specs

    • UL 844 Hazardous Locations
    • Class I, Division 1, Groups C,D
    • 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

    Brand LED Lighting Supply

    Durable Construction

    IP Rating IP66
    Warranty 5 years

    Measurements

    Dimensions (in) 5.6 x 5.6 x 4.2

    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 2.9.20

    Product Overview

    This explosion proof junction box is a surface-mounted enclosure for hazardous location lighting connections. It has a 3/4 NPT connection and a compact 5.6 x 5.6 x 4.2 inch housing.

    The enclosure is rated IP66 and built for wet and marine outside conditions. It supports installations requiring classified-location equipment and protected electrical junction points.

    Core Performance and Output

    This product is an electrical junction box and does not produce light output. Its performance is defined by hazardous-location classifications, wet-location suitability, and IP66 ingress protection.

    The box is rated for Class I, Division 1 Groups C and D, and Class I, Division 2 Groups A, B, C, and D. It is also rated for Class II, Division 1 Groups E, F, and G, Class II, Division 2 Groups F and G, and Class III locations.

    Adjustability and Control Options

    The supplied product data identifies a 3/4 NPT connection and surface-mount installation. No dimming, control, or adjustment features are specified.

    Connection routing and final wiring arrangement must match the classified-location installation requirements.

    Longevity and Reliability

    The IP66 enclosure rating supports use where protection against dust and water ingress is required. The housing is identified as corrosion resistant.

    A 5-year warranty is included. Long-term reliability depends on maintaining properly sealed connections during installation and service.

    Build Quality and Physical Characteristics

    The enclosure measures 5.6 x 5.6 x 4.2 inches. Its compact square form supports surface-mounted junction placement.

    The construction is intended for wet and marine outside conditions. The 3/4 NPT connection size should be verified against the planned conduit and fitting arrangement.

    Where This Product Fits Best

    This junction box fits classified and exposed installations where lighting wiring requires a protected explosion proof enclosure. Its ratings support hazardous, wet, and marine conditions.

    • hazardous location lighting
    • explosion proof lighting
    • chemical processing facility lighting
    • oil and gas facility lighting
    • marine environment lighting
    • refinery lighting

    IP66 protection, corrosion-resistant construction, UL 844 hazardous-location listing, UL 1598 wet-location suitability, UL 1598A Marine Outside Type status, and ABS status define the environmental fit.

    Installation and Long-Term Use

    The box is installed as a surface-mounted enclosure with a 3/4 NPT connection. The mounting surface, conduit routing, fittings, and wiring method must be appropriate for the applicable classified location.

    Maintain enclosure integrity when servicing connections. Damaged seals, loose fittings, or unsealed entries can affect the intended environmental protection.

    How This Fixture Is Commonly Used

    This product is used as a junction point within hazardous location lighting, explosion proof lighting, chemical processing facility lighting, oil and gas facility lighting, marine environment lighting, and refinery lighting installations. It is surface mounted where the connection location can be accessed for installation and maintenance.

    Layout follows the lighting circuit and conduit routing rather than fixture spacing. Junction box placement depends on the connection path, mounting surface, and classified-location requirements.

    Safety, Certifications, and Warranty

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

    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. Class III.

    The enclosure is IP66 rated and carries a 5-year warranty.

    Frequently Asked Questions

    Q: What hazardous location classifications apply to this junction box?

    A: It is rated for 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.

    Q: Is this junction box suitable for wet locations?

    A: Yes. It is UL 1598 Suitable for Wet Locations and IP66 rated.

    Q: Is this junction box suitable for marine environment lighting?

    A: Yes. It is UL 1598A Marine Outside Type, ABS listed, and identified for marine environment lighting.

    Q: What is the connection size?

    A: The junction box has a 3/4 NPT connection.

    Q: What should be considered when planning junction box placement?

    A: Surface-mount location, conduit routing, fitting arrangement, and the applicable classified-location requirements affect placement. The supplied data does not establish a spacing or coverage value.

    Application Questions and Clarification

    Q: Can this box be used for chemical processing facility lighting?

    A: Chemical processing facility lighting is a listed application. Final installation must match the applicable hazardous-location classification.

    Q: Does the enclosure support explosion proof lighting installations?

    A: Explosion proof lighting is a listed application. The box is UL 844 rated for hazardous locations and carries the stated Class I, Class II, and Class III classifications.

    Q: What environmental protection does the enclosure provide?

    A: The enclosure is IP66 rated, UL 1598 Suitable for Wet Locations, and UL 1598A Marine Outside Type.

    Web ID: 1677