Authorized nVent Distributor
nVent TB3R103240 - Terminal Box 3-Phase Type 3R, 18.00x10.75x4.50, Gray, Steel

nVent TB3R103240 Terminal Box 3-Phase Type 3R, 18.00x10.75x4.50, Gray, Steel

UPC: 783510170011


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 TB3R103240 is a robust 3-Phase Type 3R Terminal Box engineered for demanding outdoor commercial and industrial applications. This enclosure serves as a critical junction point, facilitating the safe and reliable connection of feeder taps to branch circuits. Constructed from durable 16-gauge galvanized steel and finished with a protective ANSI 61 gray polyester powder paint, the TB3R103240 is built to withstand harsh environmental conditions, ensuring long-term performance and protection for your electrical connections. Designed with user-friendliness and safety in mind, this terminal box features a drip-shield top and seam-free sides, front, and back to prevent water ingress. The removable cover allows for easy access during installation and maintenance, while the included distribution lugs (rated for #14-2/0 wire range) simplify wiring. A convenient hub opening at the top, complete with a cover, provides a secure entry point for conduit. For added security, the enclosure is equipped with provisions for padlocking or sealing, and knockouts on the bottom offer flexible conduit entry options. Grounding provisions are also integrated for enhanced electrical safety. Meeting stringent industry standards including UL 1773, UL 50, 50E, CSA C22.2 No 94, NEMA/EEMAC Type 3R, and IEC 60529 IP32, the nVent TB3R103240 is a trusted solution for critical power distribution. Its 120/240V rating and 100A capacity, combined with a 3-phase, 4-wire configuration, make it suitable for a wide array of applications. Whether used in utility substations, manufacturing facilities, or commercial complexes, this terminal box ensures the integrity and reliability of your electrical infrastructure. Key Features: * **Durable Construction:** 16-gauge galvanized steel with ANSI 61 gray polyester powder paint finish. * **Environmental Protection:** Type 3R / IP32 rating with drip-shield top and seam-free design. * **Easy Access:** Removable cover for simplified installation and maintenance. * **Integrated Components:** Distribution lugs and hub opening included. * **Enhanced Security:** Provisions for padlocking or sealing. * **Flexible Installation:** Knockouts on the bottom for conduit entry. * **Compliance:** UL, CSA, NEMA/EEMAC, and IEC standards compliant. Specifications: * **Manufacturer:** nVent * **SKU:** TB3R103240 * **Dimensions:** 18.00" x 10.75" x 4.50" * **Voltage:** 120/240V * **Phase:** 3Ø * **Amperage:** 100A * **Wire Configuration:** 4-wire (with 4 distribution bars) * **Wire Range:** #14-2/0 AWG * **Material:** Galvanized Steel * **Finish:** ANSI 61 Gray Polyester Powder Paint
  • Grounding provisions
  • Hub opening at top with cover
  • Provisions for padlocking or seal
  • Distribution lugs installed (see table for sizes)
  • Knockouts on bottom of enclosure
  • Removable cover
  • Drip-shield top and seam-free sides, front and back
  • Terminal Boxes are finished with paint over plated surfaces

Specifications

Amps
100 A
Application
Power Distribution
Bar Quantity
4
Color
Gray
Color
Grey
Color Code
ANSI 61
Current
100-100 A
Current Rating
100 A
Depth
4.5 in
Depth
114.3 mm
Depth
13 IN
Depth
114
Finish
Galvanized
Height
44 IN
Height
457
Height
18 IN
IP Rating
IP32
Material
Steel
Material
Mild Steel;Steel
Material
Mild Steel
Modification Services
Yes
NEMA Rating
Type 3R
NEMA Rating
3R Weather-resistant, except dust
NEMA Rating
3r
Number of Phases
3 Ph
Phase
3Ø Ph
Poles
3PH
Protection Rating
NEMA Type 3R
Size
18.00x8.00x4.50 in
Size
18.00x10.75x4.50
Thickness
16 ga
Thickness
1.52 mm
Thickness
51.40mm (2.024")
Type
Utility Cabinets
Type
Utility / Canadian Cabinets and Splitters
Type Number
Type 3R
Voltage AC
120 V
Voltage AC
120/240 V
Voltage Rating
240 V
Weight
15.8 lb
Width
273
Width
10.75 in
Width
23 IN
Wire Range
(6) #14-2/0 kcmil
Wire Size
(6) #14 - 2/0
Package Dimensions (L x W x H)
19 IN x 12.9 IN x 6.9 IN
Package Dimensions (L x W x H)
48.26 cm x 32.766 cm x 17.526 cm
Package Weight (Imperial)
15.800 L
Package Weight (Metric)
7.167 kg
Terminal Box 1-Phase Type 3R, 18.00x8.00x4.50, Gray, Steel

TB3R101

Terminal Box 1-Phase Type 3R, 18.00x8.00x4.50, Gray, Steel
Interchangeable Bolt-on Hub, Fits Conduit Size 2.00, Anodized, Aluminum

TBHUB20

Interchangeable Bolt-on Hub, Fits Conduit Size 2.00, Anodized, Aluminum
Interchangeable Bolt-on Hub, Fits Conduit Size 1.00, Anodized, Aluminum

TBHUB10

Interchangeable Bolt-on Hub, Fits Conduit Size 1.00, Anodized, Aluminum
Interchangeable Bolt-on Hub, Fits Conduit Size 2.50, Anodized, Aluminum

TBHUB25

Interchangeable Bolt-on Hub, Fits Conduit Size 2.50, Anodized, Aluminum
Interchangeable Bolt-on Hub, Fits Conduit Size 1.50, Anodized, Aluminum

TBHUB15

Interchangeable Bolt-on Hub, Fits Conduit Size 1.50, Anodized, Aluminum
Interchangeable Bolt-on Hub, Fits Conduit Size 1.25, Anodized, Aluminum

TBHUB12

Interchangeable Bolt-on Hub, Fits Conduit Size 1.25, Anodized, Aluminum
Terminal Box, SSTB, 400x600x120mm, Brushed, Stainless 304

SSTB406012

Terminal Box, SSTB, 400x600x120mm, Brushed, Stainless 304
Terminal Box, SSTB, 400x800x120mm, Brushed, Stainless 304

SSTB408012

Terminal Box, SSTB, 400x800x120mm, Brushed, Stainless 304

How to Install the TB3R103240 Type 3R Terminal Box

Guide for installing and wiring the TB3R103240 Type 3R Terminal Box for outdoor commercial and industrial applications.

Estimated time: 1h

Tools needed:

Screwdriver, Wire strippers, Wrench, Drill, Measuring tape

Supplies needed:

Mounting hardware, Conduit fittings, Wire connectors, Grounding hardware

  1. Select Mounting Location

    Choose a suitable outdoor location for the terminal box. Ensure the location is accessible for maintenance and protected from extreme environmental conditions not covered by the Type 3R rating. Verify that the mounting surface is sturdy and can support the weight of the enclosure and its contents.

  2. Prepare the Enclosure

    Open the removable cover of the TB3R103240 terminal box. If using an interchangeable bolt-on hub, select the appropriate size for your conduit and install it in the designated hub opening at the top of the enclosure. If knockouts are to be used for conduit entry, carefully remove the appropriate knockouts from the bottom of the enclosure using a drill or knockout punch. Consult the datasheet for specific knockout sizes.

  3. Mount the Terminal Box

    Securely mount the TB3R103240 terminal box to the chosen surface using appropriate mounting hardware. Ensure the enclosure is installed in an upright position to maintain its Type 3R rating. Verify that the mounting is firm and stable.

  4. Install Grounding

    Connect a grounding conductor to the grounding provisions inside and outside the terminal box. Use appropriate grounding hardware and ensure a secure connection to the enclosure and the grounding system. Refer to local electrical codes for specific grounding requirements.

  5. Wire the Terminal Box

    Route feeder and branch circuit wires through the installed conduit fittings or knockouts. Strip wire ends as needed according to the wire range specified for the installed lug assembly (e.g., #14-2/0 for TB100, #6-350 MCM for TB200, #4-600 MCM for TB400). Connect the wires to the distribution lugs, ensuring proper torque and connection for each wire. For specific torque values, consult the lug assembly documentation or the product datasheet. If using multiple lugs, ensure correct phase and neutral connections as per your system requirements.

  6. Finalize Installation

    Close and secure the removable cover of the terminal box. Ensure it is properly sealed to maintain the Type 3R rating. If provisions for padlocking or sealing are available, use them to secure the enclosure. Verify all connections are tight and the installation is complete.

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.