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nVent MB252503PSK - MultiBox Opaque Screw Cover with Knockouts Type 4X, 2.55x2.55x3.18, Lt Gray, Polystyrene, PSK

nVent MB252503PSK MultiBox Opaque Screw Cover with Knockouts Type 4X, 2.55x2.55x3.18, Lt Gray…

UPC: 635394601207

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 Enclosure (SKU: MB252503PSK) is engineered for demanding industrial applications where robust protection and reliable performance are paramount. Designed as an electrical junction box or instrumentation enclosure, this unit excels in highly corrosive environments, safeguarding sensitive components from harsh elements. Constructed from durable light gray polystyrene, its opaque design offers essential UV resistance and prevents light ingress, crucial for certain electronic components. The Type 4X rating signifies superior protection against water and dust ingress, making it an ideal choice for outdoor installations or areas subject to frequent washdowns. This enclosure features a convenient screw cover mechanism for secure closure and easy access during maintenance or installation. Pre-punched knockouts are strategically placed to facilitate straightforward wiring and cable entry, streamlining the setup process for electricians and technicians. The compact dimensions of 2.55 x 2.55 x 3.18 inches make it suitable for applications where space is limited, yet substantial protection is still required. The inherent chemical resistance of polystyrene ensures longevity and integrity even when exposed to aggressive substances commonly found in chemical processing, wastewater treatment, and manufacturing facilities. Professionals trust nVent for their commitment to quality and innovation in enclosure solutions. The MultiBox series embodies this dedication, providing a cost-effective yet highly reliable option for protecting electrical and electronic equipment. Its versatility extends to various industries, including: * **Chemical Processing:** Protecting sensors, control units, and junction points from corrosive fumes and liquids. * **Water and Wastewater Treatment:** Ensuring the integrity of control systems and instrumentation in wet and chemically treated environments. * **Food and Beverage:** Offering a hygienic and easily cleanable solution for electrical connections. * **Manufacturing:** Safeguarding control panels and wiring in production line environments. * **Telecommunications:** Protecting outdoor equipment from environmental factors. Installation is simplified thanks to the thoughtful design, including the pre-configured knockouts. The robust construction ensures that internal components remain protected from impacts, moisture, and environmental contaminants. When selecting an enclosure for critical electrical and instrumentation applications, particularly in challenging industrial settings, the nVent MultiBox Opaque Screw Cover Enclosure offers a dependable and efficient solution, backed by the reputation of a leading manufacturer in the enclosure market. Its Type 4X rating, durable polystyrene material, and user-friendly design make it a standout choice for ensuring the longevity and operational integrity of your valuable equipment.
  • Durable light gray polystyrene construction for corrosion resistance.
  • Type 4X rating provides superior protection against water and dust ingress.
  • Opaque design offers UV resistance and light protection for sensitive components.
  • Convenient screw cover for secure closure and easy access.
  • Pre-punched knockouts for simplified wiring and cable entry.
  • Continuous gaskets made of polyurethane foam guarantee optimal integrity
  • All enclosures can be easily modified to customer specifications

Specifications

Application
Controls and Drives; Corrosive Environments
Color
Light Gray
Color
Lt Gray
Finish
Smooth Matte
Material
Polystyrene
Nema Rating
Type 4X
Series
MultiBox
Size
2.55x2.55x3.18
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
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 MB252503PSK Multibox Enclosure

Installation guide for mounting and wiring the MB252503PSK Multibox series enclosure.

Estimated time: 30m

Tools needed:

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

Supplies needed:

Mounting screws, Wire connectors, Gasket (if not pre-installed), Cable glands (if needed)

  1. Select Mounting Location

    Choose a suitable location for the MB252503PSK enclosure. Ensure the environment is appropriate for the enclosure's NEMA/IP rating and temperature range. Refer to the datasheet for specific environmental considerations.

  2. Prepare the Enclosure

    If using an enclosure with knockouts (e.g., PCK, PSK, PCCTK, PSCTK series), select the appropriate knockout locations for cable entry. Remove knockouts using pliers or a suitable tool. If no knockouts are present, plan for drilling mounting holes. For enclosures without knockouts, drill mounting holes as needed, ensuring they do not compromise the enclosure's integrity or gasket seal.

  3. Mount the Enclosure

    Securely mount the MB252503PSK enclosure to the desired surface using appropriate mounting screws. Ensure the enclosure is level and firmly attached. If using a back plate, mount it first according to its specific instructions.

  4. Install Cable Glands (if applicable)

    If using cable glands, install them into the prepared knockout holes or drilled openings. Ensure a tight seal to maintain the enclosure's environmental rating.

  5. Route Wiring

    Feed the necessary electrical wires through the installed cable glands or openings into the enclosure. Ensure proper strain relief is applied to the cables.

  6. Make Electrical Connections

    Connect the internal wiring according to your system's requirements. Use appropriate wire connectors and ensure all connections are secure and insulated. Refer to any internal diagrams or external datasheets for specific wiring configurations.

  7. Close and Secure the Enclosure

    Carefully close the enclosure cover, ensuring the gasket is properly seated to maintain a watertight and dust-tight seal. Secure the cover using the provided non-metallic corner screws. Tighten screws evenly.

  8. Final Inspection

    Visually inspect the installed enclosure to ensure all seals are intact and all connections are secure. Verify that the enclosure is properly mounted and all openings are sealed.

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.