Authorized nVent Distributor
nVent ASB404R - Splitter Box Type 1 4-wire 400 amps, 22.00x22.00x6.00, Gray, Steel

nVent ASB404R Splitter Box Type 1 4-wire 400 amps, 22.00x22.00x6.00, Gray, Steel

UPC: 783510138745


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 ASB404R is a Type 1 splitter box designed for reliable indoor power distribution. This 4-wire enclosure handles 400 amps with main lugs rated for 4-600 MCM copper or aluminum conductors, and branch lugs rated for 285 amps, also supporting 4-600 MCM conductors. The unit measures 22.00 x 22.00 x 6.00 inches (559 x 559 x 152 mm). Constructed from 16-gauge steel, it features an ANSI 61 gray polyester powder paint finish for corrosion resistance and protection against solid foreign objects (Type 1, IP30). The ASB404R includes hinged covers, mounting holes in the back, and a single-point ground lug. Multiple combination knockouts are provided on all four sides for flexible wiring access. This splitter box is suitable for applications requiring efficient power segmentation in industrial and commercial settings. Optional accessories include splitter box block assemblies and ground splitter bars.
  • Various numbers and sizes of combination knockouts are provided on all four sides: see Knockout Size and Spacing Table
  • Hinged covers
  • Mounting holes in back
  • Includes single point ground lug
  • Ground Splitter (ground bar) accessory available
  • 16 or 14 gauge steel
  • Type 1 (IP30) rated enclosure
  • Hinged covers and mounting holes in back
  • Includes single-point ground lug
  • Multiple combination knockouts on all four sides

Specifications

Application
Power Distribution
Branch Lug Amps CU
285 A
Branch Lug Quantity
2
Branch Lug Wire Size
4 AWG - 600 MCM
Color
Gray
Color Code
ANSI 61
Connection Type
Terminal blocks (copper or aluminum conductors 4-600 MCM)
Connection Type
Terminal blocks
Current Rating
400 A
Depth
6 in
Depth
13 IN
Depth, Maximum
6
Depth, Minimum
6
Finish
Powder Coated
Height
22 in
Height
44 IN
IP Rating
IP30
Main Lug Amps CU
400 A
Main Lug Quantity
2
Main Lug Wire Size
4-600MCM kcmil
Material
Steel
Material
Mild Steel;Steel
Modification Services
Yes
NEMA Rating
Type 1
NEMA Rating
1
Number Of Wires
4
Poles
4-wire
Protection Rating
NEMA Type 1
Series
ASB
Size
22.00x22.00x6.00 in
Size
22.00x22.00x6.00
Size
22.00x22.00x6.00 inches
Size
22.00 x 22.00 x 6.00 inches (559 x 559 x 152 mm)
Thickness
14 ga
Thickness
51.40mm (2.024")
Type
Utility / Canadian Cabinets and Splitters
Type
Utility Cabinets
Type Number
Type 1
Weight
39.6 lb
Width
559 mm
Width
559
Width
22 IN
Wire Quantity
4
Package Dimensions (L x W x H)
24.75 IN x 24.25 IN x 7 IN
Package Dimensions (L x W x H)
62.865 cm x 61.595 cm x 17.78 cm
Package Weight (Imperial)
39.600 L
Package Weight (Metric)
17.963 kg
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How to Install the ASB404R Splitter Box

This guide provides step-by-step instructions for installing and configuring the ASB404R Splitter Box for safe and efficient operation.

Estimated time: 45m

Tools needed:

Screwdriver, Wire strippers, Multimeter

Supplies needed:

Mounting screws, Terminal connectors

  1. Mount the splitter box

    Secure the ASB404R Splitter Box to the designated mounting surface using the provided mounting screws. Ensure it is level and firmly attached.

  2. Connect the main wire feed

    Feed the main wire through the appropriate knockout on the left, right, top, or bottom of the splitter box. Use terminal blocks as configured by Hoffman, ensuring they are properly oriented and secured.

  3. Verify electrical clearances

    Before energizing any circuits, check all internal and external electrical and mechanical clearances to ensure that all assembled equipment functions safely and properly.

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.