nVent A51-1912DTH - APO with Transparent Inspection Window Type 4X, 19.20x11.89x6.93, Lt Gray, Fiberglass, DTH
nVent

A51-1912DTH

UPC: 635394003162


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Installation Instructions

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Overview

The **nVent APO1912A51** fiberglass enclosure with a transparent inspection window is a high-performance, Type 4X-rated solution engineered for demanding industrial environments where corrosion resistance, durability, and visibility are critical. Manufactured by nVent, a global leader in electrical and thermal management solutions, this enclosure combines robust fiberglass construction with a clear polycarbonate window to provide unmatched protection for electrical components, instrumentation, and control systems in highly corrosive settings. Designed to meet the rigorous demands of industries such as chemical processing, oil and gas, water treatment, and manufacturing, the APO1912A51 ensures long-term reliability and operational safety. This enclosure is ideal for applications requiring **insulated electrical junction boxes, terminal wiring housings, instrument enclosures, and control panels** where exposure to moisture, chemicals, and harsh weather conditions is a constant challenge. The **transparent inspection window** allows for quick visual verification of internal components without compromising the enclosure’s protective integrity, reducing downtime during inspections and maintenance. The **light gray finish** and fiberglass material provide excellent resistance to UV degradation, salt spray, and a wide range of corrosive substances, making it a preferred choice for outdoor and indoor installations in coastal, industrial, or chemical-rich environments. Key features of the nVent APO1912A51 include: - **Type 4X Rating**: Provides protection against windblown dust, rain, splashing water, and hose-directed water, ensuring compliance with NEMA and IP standards for harsh environments. - **Fiberglass Construction**: Offers superior corrosion resistance, high dielectric strength, and dimensional stability, outperforming traditional metal enclosures in chemically aggressive settings. - **Transparent Inspection Window**: Facilitates easy monitoring of internal components, wiring, and connections without opening the enclosure, enhancing safety and efficiency. - **Compact Footprint**: Measuring 19.20 x 11.89 x 6.93 inches, this enclosure is space-efficient while providing ample room for wiring, terminals, and instrumentation. - **Durable Light Gray Finish**: Resists fading, chalking, and corrosion, ensuring long-term aesthetic and functional performance. Professionals in industries such as **chemical processing, petrochemical, pulp and paper, food and beverage, and wastewater treatment** rely on nVent’s APO series enclosures for their ability to withstand extreme conditions while maintaining operational integrity. The **fiberglass material** is inherently non-conductive, reducing the risk of electrical faults and enhancing safety in high-voltage applications. Additionally, the enclosure’s design allows for easy mounting and integration with existing systems, making it a versatile choice for both new installations and retrofits. nVent’s reputation for innovation and quality is underscored by their commitment to engineering solutions that meet the evolving needs of industrial environments. The **APO1912A51** is a testament to this dedication, offering a reliable, low-maintenance solution for protecting critical electrical and control systems. Whether used in **explosive atmospheres, corrosive chemical plants, or outdoor installations**, this enclosure delivers unparalleled performance and peace of mind. Trusted by engineers and facility managers worldwide, nVent’s fiberglass enclosures are a cornerstone of modern industrial infrastructure, ensuring safety, efficiency, and longevity in even the most challenging conditions.
  • 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
  • 7 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

Specifications

Application
Controls and Drives; Corrosive Environments
Color
Light Gray
Color
Lt Gray
Color Code
RAL 7035
Depth
176 mm
Depth
6.93 in
Finish
Smooth Matte
Height
19.2 in
Height
488 mm
Material
Fiberglass
Nema Rating
Type 4X
Product Family
APO
Protection Rating
NEMA Type 3
Series
APO
Size
19.20x11.89x6.93
Type
Fiberglass and Thermoplastic Wall Mounted Industrial Enclosures
Weight
7.5 lb
Width
302 mm
Width
11.89 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
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
Escutcheon black type B for Sircover 125-630A

44095015

Escutcheon black type B for Sircover 125-630A
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 APO Series Enclosure

This guide provides step-by-step instructions for installing the APO Series enclosure, ensuring proper mounting and wiring for optimal performance.

Estimated time: 45m

Tools needed:

Screwdriver, Wire strippers, Multimeter

Supplies needed:

Mounting screws, Terminal connectors

  1. Mount the enclosure

    Secure the enclosure to the desired 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 terminal connectors inside the enclosure. Use a multimeter to verify proper connections.

  3. Seal the enclosure

    Ensure that the enclosure cover is properly sealed to maintain its IP67 rating. Check that all gaskets are in place and secure.

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.