nVent A12-2424E1HPL4 - APO Flat Opaque Screw Cover with Extension Type 4X, 23.74x23.74x9.29, Lt Gray, Fiberglass, E1HPL
nVent

A12-2424E1HPL4

UPC: 635394001670


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Installation InstructionsSpecification Sheet

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Overview

The nVent APO2424A12E1HPL4 Flat Opaque Screw Cover with Extension is a high-performance, fiberglass-reinforced polyester (FRP) enclosure accessory designed to protect and extend the functionality of electrical junction boxes, terminal wiring systems, and control enclosures in the most demanding industrial environments. Engineered by nVent, a global leader in thermal management and electrical protection solutions, this Type 4X rated cover delivers unmatched durability, corrosion resistance, and long-term reliability—ideal for facilities where exposure to moisture, chemicals, dust, and extreme temperatures is a constant challenge. Built from fiberglass material and finished in a light gray color for high visibility and UV resistance, the APO2424A12E1HPL4 is specifically designed to mate seamlessly with nVent’s APO enclosures, forming a secure, insulated housing that safeguards sensitive electrical components. Its flat opaque design ensures minimal visual intrusion while maintaining robust protection against environmental ingress. The extension feature provides additional depth, allowing for better cable management, improved air circulation, and easier access during installation or maintenance. This enclosure cover is rated for E1HPL environments, indicating compliance with stringent electrical safety and performance standards for hazardous locations where explosive atmospheres may be present. It is ideal for use in: - Chemical processing plants - Oil and gas facilities - Wastewater treatment plants - Food and beverage production areas - Marine and offshore installations - Pharmaceutical manufacturing - Mining operations Professionals in these industries rely on nVent’s APO series for its proven track record of performance in corrosive and high-impact settings. The fiberglass construction resists rust, oxidation, and chemical attack, ensuring the enclosure remains structurally sound and electrically safe over time. Installation is straightforward using standard hardware, and the cover can be easily removed for inspection or reconfiguration without compromising the integrity of the enclosure. Choosing the right enclosure accessory is critical to system safety and longevity. The nVent APO2424A12E1HPL4 is engineered to meet or exceed NEMA Type 4X and IP66/67 standards, providing protection against water jets, hose-downs, and prolonged exposure to corrosive substances. Its lightweight yet rugged design reduces installation time and labor costs, while the durable finish ensures long-term aesthetic and functional performance. Backed by nVent’s global engineering expertise and commitment to innovation, the APO2424A12E1HPL4 represents a smart investment for facilities that demand reliability, safety, and compliance in harsh operating conditions. Whether upgrading existing systems or designing new infrastructure, this screw cover extension delivers the performance and peace of mind required in today’s industrial landscape.
  • Available sized from 7x6 (178x152mm) to 24x24 (610x610mm)
  • Enclosures are maintenance free and corrosion resistant
  • Bases and covers are made from hot compression molded halogen free, self extinguishing fiberglass reinforced polyester (FRP) that can withstand continuous temperatures up to 158°F (70°C) and momentary exposure to 302°F (150°C)
  • All enclosures can be easily modified to customer specifications
  • Gaskets are made from continuously poured polyurethane foam
  • Brass M4 threaded inserts are factory installed for mounting plate attachment
  • 4 to 6 bosses suitable for M6 threaded inserts are molded into the base (dependant on enclosure size).
  • Maintain UL / CSA Type 4x with up to 5 extension collars
  • Extensions allow deeper enclosure depths

Specifications

Application
Corrosive Environments; Controls and Drives
Color
Light Gray
Color Code
RAL 7035
Depth
236 mm
Depth
9.29 in
Finish
Smooth Matte
Height
603 mm
Height
23.74 in
Material
Fiberglass
Product Family
APO
Protection Rating
NEMA Type 3
Type
Fiberglass and Thermoplastic Wall Mounted Industrial Enclosures
Weight
21.5 lb
Width
23.74 in
Width
603 mm
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.
Escutcheon black type B for Sircover 125-630A

44095015

Escutcheon black type B for Sircover 125-630A
External operation handle 0-1 type S01 Red Nema 4,4x

140E2911

External operation handle 0-1 type S01 Red Nema 4,4x
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
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
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
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
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

How to Install the A12-2424E1HPL4 Enclosure

This guide provides step-by-step instructions for installing the A12-2424E1HPL4 enclosure, ensuring proper mounting, wiring, and initial setup.

Estimated time: 45m

Tools needed:

Screwdriver, Wire strippers, Multimeter

Supplies needed:

Mounting screws, Wire connectors

  1. Mount the enclosure

    Secure the A12-2424E1HPL4 enclosure to a suitable surface using the provided mounting screws. Ensure it is level and firmly attached.

  2. Connect the wiring

    Strip the ends of the wires and connect them to the appropriate terminals inside the enclosure. Use wire connectors to secure the connections.

  3. Verify electrical connections

    Use a multimeter to check the continuity of the connections. Ensure there are no shorts and that all connections are secure before powering on the system.

  4. Seal the enclosure

    Close the enclosure cover and ensure it is properly sealed to maintain the enclosure's IP67 rating. Check that all latches are engaged.

  5. Power on the system

    Turn on the power supply to the enclosure and monitor for any irregularities. Ensure that all systems are functioning as expected.

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.