Authorized nVent Distributor
nVent MB100704PSK - MultiBox Opaque Screw Cover with Knockouts Type 4X, 10.00x7.09x4.37, Lt Gray, Polystyrene, PSK

nVent MB100704PSK MultiBox Opaque Screw Cover with Knockouts Type 4X, 10.00x7.09x4.37, Lt Gray…

UPC: 635394600811

Documents & Media
Installation Instructions

Contact for Pricing

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The nVent MultiBox Opaque Screw Cover with Knockouts (SKU: MB100704PSK) is a high-performance electrical enclosure designed for demanding industrial environments where corrosion resistance and durability are critical. Part of the trusted MultiBox series by nVent, a global leader in electrical and thermal management solutions, this enclosure combines robust construction with versatile functionality to protect sensitive electrical components in harsh conditions. Engineered from lightweight yet durable polystyrene, the MB100704PSK delivers exceptional resistance to moisture, chemicals, and UV exposure, making it ideal for outdoor installations and corrosive industrial settings such as chemical plants, water treatment facilities, and marine applications. Key features of the MultiBox Opaque Screw Cover include its Type 4X NEMA rating, which ensures protection against ingress of windblown dust, rain, splashing water, and hose-directed water. The enclosure’s 10.00 x 7.09 x 4.37-inch dimensions provide ample internal space for housing junction boxes, control panels, or instrumentation while maintaining a compact footprint for efficient installation. The opaque light gray finish not only enhances visibility in low-light conditions but also resists fading and discoloration over time, ensuring long-term performance and aesthetic consistency. The integrated knockouts offer flexible cable entry options, allowing for easy integration with existing wiring systems without compromising the enclosure’s protective integrity. This feature is particularly valuable in retrofit projects or applications requiring frequent modifications, as it reduces installation time and labor costs. The screw cover design ensures a secure, tamper-resistant seal, preventing unauthorized access while maintaining compliance with safety standards. Industries that benefit from the nVent MultiBox Opaque Screw Cover include oil and gas, manufacturing, utilities, and telecommunications, where reliable protection of electrical components is non-negotiable. The MultiBox series is trusted by engineers and contractors for its consistency, compliance with industry standards, and compatibility with a wide range of nVent accessories. Whether deployed in coastal environments, chemical processing plants, or wastewater treatment facilities, this enclosure delivers uncompromising performance where other materials might fail. nVent’s reputation for innovation and quality is underscored by its rigorous testing protocols and adherence to international standards, including UL, CSA, and IEC certifications. The MB100704PSK is manufactured in Canada, reflecting nVent’s commitment to high manufacturing standards and supply chain reliability. For professionals seeking a durable, corrosion-resistant enclosure that balances functionality with ease of installation, the nVent MultiBox Opaque Screw Cover with Knockouts is a proven solution that meets the demands of modern industrial applications.
  • Type 4X NEMA rating for superior protection against dust, water, and corrosion
  • Durable polystyrene construction with light gray opaque finish
  • 10.00 x 7.09 x 4.37-inch dimensions for versatile component housing
  • Integrated knockouts for flexible cable entry and installation
  • Screw cover design ensures secure, tamper-resistant sealing
  • Continuous gaskets made of polyurethane foam guarantee optimal integrity
  • All enclosures can be easily modified to customer specifications

Specifications

Application
Corrosive Environments; Controls and Drives
Color
Light Gray
Finish
Smooth Matte
Material
Polystyrene
Type
Fiberglass and Thermoplastic Wall Mounted Industrial Enclosures
Panel 6.9 x 4.9 - Fits Encl. 8 x 6 - Alum

14A0705

Panel 6.9 x 4.9 - Fits Encl. 8 x 6 - Alum
Sealable and transparent protective covers BX4 and non-removable BX4-CA to protect the devices against accidental contact.

BX4

Sealable and transparent protective covers BX4 and non-removable BX4-CA to protect the devices against accidental contact.
Cord Grip with NPT Threads, Locknut Included, NPT Thread Size 3/8 Inch, Cable Range 0.181 Inch/4.6mm to 0.312 Inch/7.9mm, Hole Clearance 0.670 Inch/17.0mm, Thread Length 0.53 Inch/13.5mm, IP68 Rating, Nylon, Black

LH38

Cord Grip with NPT Threads, Locknut Included, NPT Thread Size 3/8 Inch, Cable Range 0.181 Inch/4.6mm to 0.312 Inch/7.9mm, Hole Clearance 0.670 Inch/17.0mm, Thread Length 0.53 Inch/13.5mm, IP68 Rating, Nylon, Black
EP-RJG-M20-BL-A

1SNG618003R0000

EP-RJG-M20-BL-A
1/2 Inch, Straight, One-Piece Liquidtight Non-Metallic Fitting, CSA, UL E32447, Temperatures up to 60 Degrees C, PVC, Grey

LN43DA

1/2 Inch, Straight, One-Piece Liquidtight Non-Metallic Fitting, CSA, UL E32447, Temperatures up to 60 Degrees C, PVC, Grey
1/2 Inch, 90 Degree, Two-Piece Liquidtight Non-Metallic Fitting, UL E32447, Temperatures up to 107 Degrees C, Nitril Rubber O-Ring, PVC, Grey

LT20D-NEW

1/2 Inch, 90 Degree, Two-Piece Liquidtight Non-Metallic Fitting, UL E32447, Temperatures up to 107 Degrees C, Nitril Rubber O-Ring, PVC, Grey
External operation handle 0-1 type S01 Red Nema 4,4x

140E2911

External operation handle 0-1 type S01 Red Nema 4,4x
Locking using CASTELL K key operated lock (not supplied) Fuserbloc Sirco

36297702

Locking using CASTELL K key operated lock (not supplied) Fuserbloc Sirco
12,80" x 12,80" filter fan - 115Vac - 285.3 cfm - RAL 7035 - Type 12

FF20A115UE1

12,80" x 12,80" filter fan - 115Vac - 285.3 cfm - RAL 7035 - Type 12
5,90" x 5,90" filter fan - 24Vdc - 20.6 cfm - RAL 9005 - Type 3R - IP55

FF12D24NN53

5,90" x 5,90" filter fan - 24Vdc - 20.6 cfm - RAL 9005 - Type 3R - IP55

How to Install the MB100704PSK Multibox Enclosure

Guide for installing and preparing the MB100704PSK Multibox series enclosure for use as an electrical junction or instrumentation enclosure.

Estimated time: 30m

Tools needed:

Screwdriver, Drill (if mounting holes are needed), Wire strippers, Pliers

Supplies needed:

Mounting hardware (screws, anchors), Grommets or conduit fittings (if using knockouts), Wire connectors

  1. Select Mounting Location

    Choose a suitable location for the MB100704PSK enclosure. Consider environmental factors and accessibility. Refer to the datasheet for specific temperature and environmental ratings applicable to your model.

  2. Prepare Enclosure (if necessary)

    If using a model with knockouts (PCK, PSK, PCCTK, PSCTK), select the appropriate knockout locations for cable entry. Remove the knockouts using appropriate tools. Install grommets or conduit fittings as needed. For models without knockouts, plan your cable entry points.

  3. Mount the Enclosure

    Securely mount the MB100704PSK enclosure to the desired surface using appropriate mounting hardware. Ensure the enclosure is level and firmly attached. For specific mounting instructions or back plate compatibility, refer to the product's datasheet.

  4. Install Internal Components (if applicable)

    If you are installing internal components such as back plates (e.g., MBBP series), do so now according to their specific instructions. Ensure any internal components are compatible with the enclosure size and type.

  5. Route Wiring

    Carefully route all necessary wiring into the enclosure through the prepared openings or knockouts. Use appropriate cable glands or fittings to maintain the enclosure's integrity.

  6. Connect Wiring

    Make all necessary electrical connections inside the enclosure using appropriate wire connectors. Ensure all connections are secure and comply with relevant electrical codes. Refer to any specific wiring diagrams or datasheets for your application.

  7. Close and Secure the Enclosure

    Ensure all internal wiring is properly managed and does not interfere with the gasket. Close the cover of the MB100704PSK enclosure and securely fasten the corner screws. Verify that the gasket provides a continuous seal.

Frequently Asked Questions about nVent

What industries and applications are nVent products used for?

nVent products are engineered for critical infrastructure and industrial applications across multiple demanding sectors. Key markets include Construction, Data Centers, Defense, Healthcare, Mining, Oil & Gas Refineries, Power Plants, Rail/Transit, Renewable Energy, Security, Ship Building, Steel Mills, Telecom, and Utilities. Their solutions are designed to withstand extreme environmental conditions, with temperature ranges from -55°C to 105°C and specialized features like UV resistance, oil resistance, and flame resistance.

What environmental ratings do nVent products have?

nVent enclosures feature comprehensive environmental ratings, including UL 508A, CSA, and NEMA Type 1, 2, 3, 4, 4X, 12, and 13 certifications. They are rated IEC 60529 IP66, providing robust protection against dust, water, and corrosion in both indoor and outdoor environments. These products operate effectively in temperatures ranging from -40°F to 266°F, with enhanced UV inhibitors for outdoor weathering and oil-resistant gaskets for superior sealing.

What accessories are available for nVent products?

nVent offers a comprehensive range of accessories across multiple product lines, including EMC accessories like bonding cable clamps and strain reliefs, inline accessories such as lock inserts and mounting brackets, CONCEPT accessories including panel conversion kits and rack-mount angles, and seismic accessories for specialized mounting requirements. Key accessory categories include grounding kits, DIN rail mounting solutions, panel supports, handles, and various mounting hardware compatible with different enclosure types.

What certifications and standards do nVent products comply with?

nVent products meet critical international certifications including UL (United States), CSA (Canada), CE (European Community), and EAC (Russia). Our products are designed to comply with rigorous industrial standards such as NEMA enclosure ratings, IEC 60529 IP ratings, and international safety standards across multiple industrial markets including oil & gas, power, manufacturing, and infrastructure.

What is nVent's warranty policy?

nVent offers a standard 18-month warranty from invoicing date for most automation products, covering defects in workmanship and materials. The warranty requires proper transportation, handling, storage, and installation within specified environmental conditions. Warranty coverage includes repair or replacement at nVent's discretion, with certain conditions such as authorized service repairs and operation within designed capacity limits.

What technical support does nVent offer?

nVent offers comprehensive technical support through multiple global contact centers across North America, South America, Europe, Middle East, India, and Asia. Customers can reach technical experts by phone at regional numbers, with the North American headquarters in Minneapolis, MN providing primary support at +1.763.421.2240. Additionally, nVent provides online support resources through their website, including CAD drawing downloads and an 'Ask The Expert' feature to assist with product technical inquiries.