Authorized nVent Distributor
nVent A90XM7818FTC - Heavy-Duty Disconnect White Inside Type 12, 90.12x78.50x18.12, Gray, Steel

nVent A90XM7818FTC Heavy-Duty Disconnect White Inside Type 12, 90.12x78.50x18.12, Gray, Steel

UPC: 783510914509


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 **Type 12 Heavy-Duty Disconnect Enclosure (SKU: A90XM7818FTC)** is a robust, NEMA 12-rated solution designed for industrial environments where protection against dust, dirt, and non-corrosive liquids is critical. Engineered by nVent, a global leader in electrical and thermal management solutions, this enclosure combines durability, versatility, and cost-effectiveness to meet the demands of modern power distribution systems. With a compact footprint of 90.12 x 78.50 x 18.12 inches, it is optimized for space-efficient installations without compromising on functionality or safety. This heavy-duty disconnect enclosure is constructed from high-grade steel, ensuring exceptional strength and resistance to mechanical stress, corrosion, and environmental hazards. The gray powder-coated finish provides an additional layer of protection while maintaining a professional appearance suitable for commercial and industrial settings. Designed for **Type 12** compliance, it meets stringent NEMA standards for indoor use, protecting internal components from airborne contaminants, splashing liquids, and accidental contact. **Key Features and Benefits:** - **Modular Design:** Available with **one to six doors**, this enclosure can be customized to accommodate a wide range of electrical components, from circuit breakers and contactors to relays and motor starters. This flexibility makes it ideal for applications requiring scalable power distribution solutions. - **Heavy-Duty Construction:** Built to withstand harsh operating conditions, the steel enclosure resists impacts, vibrations, and extreme temperatures, ensuring long-term reliability in demanding environments such as manufacturing plants, data centers, and utility facilities. - **Easy Access and Maintenance:** The multiple door configurations allow for convenient access to internal components, simplifying installation, inspection, and maintenance tasks. Hinged doors and optional locking mechanisms enhance security while facilitating quick adjustments or repairs. - **Cost-Effective Solution:** Engineered for efficiency, this disconnect enclosure reduces total cost of ownership by minimizing downtime, extending equipment lifespan, and simplifying compliance with safety regulations. Its durable construction reduces the need for frequent replacements or repairs. - **Versatile Applications:** Suitable for a broad spectrum of industries, including **automotive manufacturing, food and beverage processing, pharmaceuticals, and wastewater treatment**, where reliable power distribution and equipment protection are paramount. It is commonly used to house disconnect switches, motor controllers, and other critical electrical components in control panels. **Industry Applications:** - **Manufacturing Facilities:** Protects motor control centers, variable frequency drives (VFDs), and other sensitive equipment from environmental contaminants. - **Commercial Buildings:** Ideal for HVAC systems, lighting panels, and backup power units where NEMA 12-rated enclosures are required. - **Utilities and Infrastructure:** Safeguards electrical distribution systems in substations, telecom shelters, and renewable energy installations. - **Food Processing Plants:** Meets hygiene and safety standards by preventing dust and moisture ingress in washdown environments. **Installation and Compliance Considerations:** Proper installation is critical to maximizing the performance and longevity of the nVent Type 12 enclosure. Professionals should ensure the enclosure is mounted on a stable, vibration-resistant surface and that all electrical connections comply with **NEC (National Electrical Code)** and local regulations. The NEMA 12 rating confirms its suitability for indoor use in non-hazardous locations, but additional considerations such as ambient temperature, humidity, and exposure to chemicals should be evaluated for optimal performance. nVent’s reputation for innovation and reliability makes the **A90XM7818FTC** a trusted choice among electrical contractors, system integrators, and facility managers. With a focus on **safety, durability, and ease of use**, this disconnect enclosure delivers a dependable solution for power distribution challenges across diverse industries. Whether upgrading existing infrastructure or outfitting a new facility, professionals can rely on nVent’s engineering expertise to provide a product that meets both operational and regulatory requirements.
  • Seams continuously welded and ground smooth
  • Body stiffeners in larger enclosures for extra rigidity
  • Body flange trough excludes liquids and contaminants
  • Heavy-duty lifting eyes anchor into reinforced top
  • Removable centerposts permit easy panel installation
  • Concealed, easy-to-remove hinges
  • Heavy-duty 3-point latching mechanism operated by padlocking handle on all doors
  • Panel supports
  • Data pocket is high-impact thermoplastic
  • Oil-resistant gasket

Specifications

Application
Power Distribution; Arc Flash Safety; Controls and Drives
Application
Arc Flash Safety;Controls and Drives;Power Distribution
Color
Gray
Conductive Panel
A90PM78G
Depth
460 mm
Depth
18.12 in
Depth
460
Exterior Color
Gray
Exterior Color Code
ANSI 61
Finish
Powder Coated
Height
90.12 in
Height
2,289 mm
Height
2,289
Interior Color
White
IP Rating
IP55
Material
Steel
Material
Mild Steel
Modification Services
Yes
NEMA Rating
12
Nema Rating
Type 12
NEMA Rating
12 Indoor, dust-resistant
Painted Panel
A90PM78
Panel Included
Yes
Panel Size
78.00 x 72.00 in
Panel Size
1981 x 1829 mm
Protection Rating
NEMA Type 12
Size
90.12x78.50x18.12
Size
90.12x78.50x18.12 in
Stiffener Locations
610 mm
Stiffener Locations
24 in
Thickness
11 ga
Thickness
3.04 mm
Thickness
51.40mm (2.024")
Type
Mild Steel Freestanding Industrial Disconnect Enclosures
Type Number
Type 12
Weight
1,122 lb
Width
78.5 in
Width
1,994 mm
Width
1,994
With or Without Panel
With
Package Dimensions (L x W x H)
84 IN x 36 IN x 100 IN
Package Dimensions (L x W x H)
213.36 cm x 91.44 cm x 254 cm
Package Weight (Imperial)
1122.000 L
Package Weight (Metric)
508.939 kg
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.
Locking using CASTELL K key operated lock (not supplied) Fuserbloc Sirco

36297702

Locking using CASTELL K key operated lock (not supplied) Fuserbloc Sirco
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 Safely Handle and Install Large Hoffman Enclosures

This guide provides instructions for safely handling and installing large Hoffman enclosures, emphasizing precautions to prevent injury and equipment damage.

Estimated time: 1h

Tools needed:

Forklift, Overhead lifting device (e.g., crane), Slings with load-rated hooks or shackles, ROLL•A•LIFT™ or similar device (for some models)

Supplies needed:

3000 lb.-rated chain or strap (for securing to forklift mast), Rigging equipment (for overhead lifting)

  1. Read Safe Handling Requirements

    Before moving or installing the enclosure, thoroughly read and understand the 'Large Enclosure Safe Handling Requirements' document that accompanied the enclosure. Ensure the route is clear of obstructions and all personnel are at a safe distance.

  2. Prepare for Movement

    Ensure the enclosure is stabilized before removing any strapping. Verify that the lifting equipment (forklift or overhead device) has a sufficient load rating for the enclosure's weight and size. Only trained and authorized personnel should operate the lifting equipment.

  3. Position Forklift Forks

    For forklift handling, spread the forks to the maximum distance or as dictated by the skid width. Enter the skid from the rear (Side A) of the enclosure. Position the enclosure carefully on the forks, keeping the load against the carriage/mast and tilting the load backward towards the mast.

  4. Secure Enclosure to Forklift

    If using a forklift, secure the enclosure to the forklift mast before moving. Insert a 3000 lb.-rated chain or strap through the eye bolts provided on top of the enclosure and fasten it securely to the forklift mast assembly. Ensure sufficient tension to prevent tipping.

  5. Lift and Transport Enclosure

    Lift the enclosure a minimum distance so the skid is just clear of the floor. Start and stop the forklift slowly and gradually, avoiding jerky movements. Drive slowly with the forks carried as low to the ground as possible. Never attempt to move more than one enclosure at a time.

  6. End Loading/Unloading (if applicable)

    For end loading/unloading on trailers, spread forks to match pallet end slot openings and enter from the narrow side (C or D). Secure the enclosure to the forklift mast using chains or straps. Tilt the mast to take weight off the opposite end and slide/push the enclosure as required. Do not use chains or straps to lift the enclosure.

  7. Overhead Lifting (if applicable)

    If using overhead lifting, attach rigging to the eye bolts, ensuring the angle between lifting cables and the vertical does not exceed 45 degrees. Use slings with adequate load-rated hooks or shackles. Ensure the load rating of the lifting device and rigging is sufficient. Do not use ropes or cables through eye bolts.

  8. Final Placement

    Once the enclosure is at its final location, carefully position it. Ensure it is stable and permanently installed according to any specific product instructions not covered in this general handling guide. Refer to the nameplate or datasheet for model-specific details.

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.