nVent MAS0303021R5 - Single Door encl. Mild Steel, MAS with Plate, 300x300x210mm, Light Gray
nVent

MAS0303021R5

UPC: 783510487416


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Installation InstructionsVideo Clip

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Overview

The nVent MAS0303021R5 mild steel single door wall-mount enclosure (SKU: MAS0303021R5) provides robust protection for electrical and electronic components in industrial environments. This 300x300x210mm enclosure features a 1.4mm thick mild steel body and 1.2mm door, meeting IP66 and IK10 ratings for dust and water ingress resistance. The RAL 7035 light gray powder-coated finish ensures corrosion resistance and a professional appearance. Designed for versatility, the MAS0303021R5 includes a pre-marked mounting plate with 10mm vertical increments for precise equipment positioning. Top and bottom cable fixing holes simplify installation and maintenance, while the rear-located gland plate opening streamlines cable management. The enclosure features concealed removable hinges with captive pins, allowing left or right-hand door opening. A plastic double-bit 3mm key is included for secure access. Ideal for manufacturing, automation, telecommunications, and renewable energy applications, this enclosure ensures components remain protected in harsh conditions. For outdoor use, pairing with a rain hood (ARF) and 100% polyester paint coating is recommended to maximize corrosion resistance. The MAS series is part of nVent’s trusted wall-mount enclosure range, delivering reliable performance in demanding settings.
  • Body: Folded and seam welded. Four 8.5 mm diameter holes for wall fixing, pressed out in 20.4 mm diameter × 2 mm depressions, to allow air circulation around the rear part of the enclosure.
  • Gland Plate Opening: Situated at the far rear of the enclosure, to make cabling onto the mounting plate easier.
  • Protection: Complies with IP 66, TYPE 4, 12, IK 10. For outdoor installation, the use of a rain Hood, ARF, and 100% polyester paint coating plus corrosion protection primer is recommended. Resistance to corrosion must be taken into consideration for outdo
  • Mounting plate: The mounting plate is marked vertically at 10 mm intervals, for easy horizontal positioning of equipment. On the top and bottom there are holes to facilitate cable fixing. Fixed onto M8 press welded studs to the rear of the enclosure. All
  • Material: Body: 1.2 mm mild steel for enclosures with a depth of 155 mm / 1.4 mm for enclosures with a depth of 210 or 260 mm / 1.5 mm for enclosures with a depth of 300 or 400 mm, or if a height or width is 1000 mm or greater. Gland plate: 1.4 mm mild st
  • Lock: nVent HOFFMAN customized double-bit 3 mm lock, with 90° movement and anti-vibration mechanism. Two locks for 600 mm high to 800 mm high enclosures. Espagnolette three point locking for 1000 mm high enclosures and above. Other inserts are available a
  • Finish: RAL 7035 structured powder coating.
  • Door: Surface mounted with 130° opening. Concealed removable hinges with captive pin. Hinges can be mounted to allow left or right hand opening. Inner M6 welded studs to mount door profiles MMDP, see delivery. Sealing is ensured by an injected one piece p
  • Delivery: Enclosure with door and mounting plate (not included for item numbers ending with PER5). For height 600 mm and above, two MMDP door mounting profiles. Gland plate(s) with gasket(s), plastic double-bit 3 mm key, and mounting accessories. Metallic
  • Mounting plate: All sides, from 800 mm and above, are strengthened by folded edges

Specifications

Application
Controls and Drives;Factory Automation and Process Control
Application
Factory Automation and Process Control; Controls and Drives
Body Thickness
1.5 mm
Body Thickness
16 ga
Cable Entry
No
Color
Gray
Color
Grey
Color
Light Gray
Color Code
RAL 7035
Construction
Body: 18 gauge Door: 18 gauge
Cubic Capacity
1 in3
Cubic Capacity
16387.1 mm3
Depth
8.27 in
Depth
210 mm
Door Thickness
14 ga
Door Thickness
1.5 mm
Door Thickness
16 ga
Finish
Powder Coated
Gland Plate Opening Depth
3.78 in
Gland Plate Opening Width
8.27 in
Gland Plate Opening Width
12.2 in
Gland Plate Type
1
Height
300 mm
Height
11.81 in
Insulation
No
Latch Quantity
1
Material
Mild Steel
Material Quality
Mild Steel
Max Mounting Depth
7.56 in
Max Mounting Depth
11.1 in
Mounting
Wall Mounted
Mounting Plate Included
Yes
NEMA Rating
NEMA Type 4 NEMA Type 12 NEMA Type 13
NEMA Rating
12;4
Number of Gland Plate Openings
1
Number Of Outlet
1
Panel Size
10.63 x 9.84 in
Panel Size
72.00 x 72.00 in
Protection Rating
NEMA Type 4
Size
11.81 x 11.81 x 8.27 inch
Style
With Mounting Plate
Type
Mild Steel Wall Mounted Industrial Enclosures
Weight
13.82 lb
Weight
32 lbs./100ft
Width
300 mm
Width
11.81 in
With or Without Panel
With
Package Dimensions (L x W x H)
12.19 IN x 12.19 IN x 8.89 IN
Package Dimensions (L x W x H)
30.9626 cm x 30.9626 cm x 22.5806 cm
Package Weight (Imperial)
13.820 L
Package Weight (Metric)
6.269 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.
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 MAS0303021R5 Controller

This guide provides step-by-step instructions for the installation and initial setup of the MAS0303021R5 Controller, ensuring proper wiring and configuration.

Estimated time: 45m

Tools needed:

Screwdriver, Wire strippers, Multimeter

Supplies needed:

Mounting screws, Terminal connectors

  1. Prepare the mounting surface

    Ensure the mounting surface is non-combustible. If necessary, install a floor plate of at least 1.43 mm galvanized or 1.6 mm uncoated steel, extending at least 150 mm beyond the equipment on all sides.

  2. Mount the controller

    Secure the MAS0303021R5 Controller to the DIN rail using the integrated clips. Ensure the controller is level and firmly attached.

  3. Connect the wiring

    Use terminal connectors to connect the power supply and input/output wires to the controller. Ensure all connections are tight and secure to prevent electrical faults.

  4. Verify electrical connections

    Use a multimeter to check the voltage at the power terminals. Confirm that the voltage matches the specifications outlined in the controller's manual.

  5. Configure the controller settings

    Access the controller's configuration interface and input the necessary parameters for your application. Refer to the user manual for specific configuration steps.

  6. Calibrate the controller

    Follow the calibration procedure as described in the user manual to ensure accurate performance. This may involve adjusting settings based on the connected sensors or devices.

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.