Authorized nVent Distributor
nVent MB042502PS - MultiBox Opaque Screw Cover Type 4X, 3.70x2.55x2.25, Lt Gray, Polystyrene, PS

nVent MB042502PS MultiBox Opaque Screw Cover Type 4X, 3.70x2.55x2.25, Lt Gray, Polystyrene, PS

UPC: 635394579544

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 Type 4X Enclosure (SKU: MB042502PS) is a high-performance electrical junction box designed for extreme environmental durability and reliable performance in corrosive and hazardous applications. Manufactured by nVent, a global leader in electrical and thermal management solutions, this enclosure combines robust construction with versatile functionality to protect critical electrical components in the most demanding industrial settings. Engineered for Type 4X environments, the MultiBox enclosure from nVent is ideal for applications requiring protection against corrosion, water ingress, and dust contamination. Its opaque polystyrene (PS) construction delivers exceptional resistance to a wide range of chemicals, acids, and alkalis, making it a trusted choice for chemical processing plants, wastewater treatment facilities, offshore oil and gas platforms, and food and beverage production environments. The light gray finish not only enhances visibility in low-light conditions but also provides UV resistance, ensuring long-term performance in outdoor installations. This enclosure features a secure screw cover design, ensuring a tight seal that prevents moisture and particulate ingress while allowing easy access for maintenance and inspection. The compact dimensions of 3.70 x 2.55 x 2.25 inches provide ample internal space for housing terminal blocks, relays, sensors, or other small electrical components, while its space-efficient design optimizes panel layout and reduces installation footprint. The Type 4X rating confirms compliance with stringent NEMA and IP standards, guaranteeing reliable operation in washdown environments, high-humidity areas, and locations exposed to corrosive atmospheres. Professionals across industries such as manufacturing, utilities, telecommunications, and transportation rely on nVent MultiBox enclosures for their proven durability and ease of installation. The enclosures are designed for quick mounting using standard hardware, compatible with both surface and DIN rail installations, and can be integrated into existing systems with minimal downtime. nVent’s commitment to quality is underscored by rigorous testing and adherence to international standards, ensuring that each MultiBox enclosure delivers consistent performance in mission-critical applications. Whether you are protecting control circuits in a corrosive chemical plant, safeguarding instrumentation in a marine environment, or securing electrical connections in a food processing facility, the nVent MultiBox Opaque Screw Cover Type 4X Enclosure provides the reliability and protection your operations demand. Trusted by engineers and facility managers worldwide, nVent’s reputation for innovation and durability makes this enclosure a preferred choice for professionals who prioritize long-term performance and safety in harsh conditions.
  • Type 4X rated for protection against corrosion, water, and dust ingress
  • Opaque polystyrene construction resists chemicals, acids, and alkalis
  • Compact 3.70 x 2.55 x 2.25 inch design for space-efficient installations
  • Light gray UV-resistant finish for outdoor and low-light visibility
  • Secure screw cover ensures easy access while maintaining environmental protection
  • All enclosures can be easily modified to customer specifications

Specifications

Application
Corrosive Environments; Controls and Drives
Color
Light Gray
Color Code
RAL 7035
Depth
2.25 in
Finish
Smooth Matte
Height
3.7 in
Material
Polystyrene
Product Family
MultiBox
Protection Rating
NEMA Type 4X
Style
Polystyrene opaque cover enclosures with four non-metallic corner screws
Type
Fiberglass and Thermoplastic Wall Mounted Industrial Enclosures
Weight
0.16 lb
Width
2.55 IN
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
Eclipse Inner Panel - Fits Encl. 30 x 30 - Steel/Wht

EP3030

Eclipse Inner Panel - Fits Encl. 30 x 30 - Steel/Wht
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
External operation handle 0-1 type S3 Black IP65

14333111

External operation handle 0-1 type S3 Black IP65
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 MB042502PS Multibox Enclosure

Guide for installing and preparing the MB042502PS 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 MB042502PS 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 MB042502PS 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 MB042502PS 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.