Square D MH44WP Steel Enclosure Box NEMA 3R/5/12, 20 Inch W x 44 Inch H x 6.5 Inch D

MPN: MH44WP
UPC: 785901798088
PPN: SCH-MH44WP

$3177.43

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Description

NQ and NF Panelboards applications include commercial buildings, industrial buildings, data centers, stadiums, and offices. NQ and NF Panelboards are versatile panelboards that feature a wide selection of circuit breakers, accessories, and ready to install kits. These panelboards have many different options for your enclosure box and its accessories. This enclosure box is rated as a Type 3R/5/12 with removable blank end walls. The enclosure dimensions are 20 inch width x 44 inch height x 6.5 inch depth. NQ and NF enclosures are UL listed for use in the USA and Canada. The end walls of NF and NQ enclosures are removable to simplify field modification to support the widest range of electrical conduit connections. NC trim fronts for interiors rated up to 250A may be screwed directly to the deadfront of the NF or NQ panelboard. NC trim fronts for interiors rated 400A or greater are vented and designed to be screwed directly to the Type 1, 2 enclosure of the NF or NQ panelboard. MHxxWP enclosures provide Type 3R/5/12 protection to NF and NQ Panelboards, and are supplied with removable blank end walls. MHxxBE and MHxxD9 Type 1 enclosures are supplied with removable blank end walls at both ends. MHxx enclosures have one blank end wall and one end wall with knockouts for common conduit sizes.

Features

Engineered with a versatile NEMA 3R, 5, and 12 multi-rating, this heavy-duty steel enclosure provides robust protection against falling rain, sleet, external ice formation, settling dust, and splashing water. This certified ingress resistance allows industrial contractors and commercial electricians to safely install sensitive power distribution systems in harsh manufacturing plants, loading docks, and exterior structural layouts.
Designed as a unified platform, the MH44WP fits both Square DTM NQ (120/240V AC) and NF (480Y/277V AC) series panelboard interiors. This physical standardization simplifies complex project staging and inventory management, ensuring a perfect mechanical alignment with standard 30- to 42-circuit, 100A-250A interior structures without requiring custom drilling or field modifications.
Featuring optimized external dimensions of 20 inches wide, 44 inches high, and 6.5 inches deep, this enclosure maximizes internal volume while maintaining a highly compact wall footprint. The 6.5-inch depth provides the necessary wire-bending space required by the National Electrical Code (NEC ) for thick copper or aluminum line conductors, speeding up primary lug terminations in cramped utility closets.
Carrying a comprehensive cULus certification, this enclosure meets all rigorous North American safety and structural standards for lighting and appliance panelboard installations. This factory-verified code compliance streamlines building inspections and provides facility managers with total peace of mind regarding operational fire safety and structural liability.

Documentation & Downloads

Specifications

Key Specifications

Country of Origin	Mexico

Depth	6.5 in

Important Information Attributes

Persona Type Ids	EU, EUA, LC, OM, SC
Carbon Footprint Of The Distribution Phase [A4]	9.8067844386, 10 kg CO2 eq.
Carbon Footprint Of The Installation Phase [A5]	0.4358661946, 0.4 kg CO2 eq.
Carbon Footprint Of The Use Phase [B2 B3 B4 B6]	kg CO2 eq., 0
Local Publishable Date	2026-03-26
Stocking Flag	N
Weee Scope	In
Scope Perimeter	At least in Europe
Reach Full Compliance Status	Free of Substances of Very High Concern above the threshold
Reach Compliance Directive	Free of Substances of Very High Concern above the threshold
Rohs Eur Status	Compliant
Rohs Eur Full Compliance Status	Compliant
China Rohs Label	1
Without Single Use Plastic	No
Tier Id	1
Function Option Id	STANDARD
Market Segmentation Id	COMMERCIAL
Product Kit Identifier	N
Energy Efficiency Optimized	False
Product Or Component Type	enclosure
Software Version	v6.2.5-6
Tightening Torque	3 N.m
Weee Label	The product must be disposed on European Union markets following specific waste collection and never end up in rubbish bins.
Database Version	2024-01
Pcr Version	PEP-PCR-ed4-2021 09 06
Type Of Verification For The Pep	Independent internal review
Functional-unit Description	Protect people from direct contact with live active parts and ensure the grouping of control, command and protection devices in a single enclosure or cabinet having the following dimensions H x L x D or an assembly of X enclosures or cabinets having the following dimensions H x L x D, with rated current In, while protecting them against mechanical impacts (IK) and the penetration of solid objects and liquids (IP), according to the appropriate use scenario, and for the reference service life of the product of 20 years.
Functional-unit Unit	unit
Energy Model - Manufacturing [A1-a3]	Electricity Mix; Low voltage; 2020; Mexico, MX
Energy Model - Use [B6]	Electricity origin
Recyclability Potential In %	97
Width Nominal	20 in
[Ue] Rated Operational Voltage	600 V AC48 V DC
Package Weight(Lbs)	34.927 kg
Warranty (In Months)	18

Persona Type Names	End User, Consumer, Contractor, Original Equipment Manufacturer, Electrician
Carbon Footprint Of The End-of-life Phase [C1 To C4]	78 kg CO2 eq., 78.2386787268
Carbon Footprint Of The Manufacturing Phase [A1 To A3]	228 kg CO2 eq., 228.171895064
Local Data Status	Publishable
Return Indicator	Y
Stock Policy	2
Weee Product Category	5
Eoli Availability Display	No need of specific recycling operations
Reach Full Compliance Status Id	NOT_CONTAINING_SVHC
Rohs Eur In Scope	Yes
Rohs Eur Conformity Date	2532
China Rohs In Scope	No
With Recycled Cardboard	No
Product Contributes To Saved And Avoided Emissions	No
Tier	1
Function Option	Standard
Market Segmentation	Commercial
Enclosure Material	steel
Product Availability	Stock - Normally stocked in distribution facility
Returnability	Yes
Sustainable Packaging	No
Total Lifecycle Carbon Footprint	317 kg CO2 eq.
Pep Code	ENVPEP2510012EN
Pep Verification Date	2025-11-01
Psr Version	PSR-0005-ed3.1-EN-2023 12 08
Data Source	extrapolated product
Functional-unit Quantity	1
Reference Lifetime In Y	20
Energy Model - Installation [A5]	No energy used
Energy Model - End Of Life [C1-c4]	Global, European and French datasets are used.
Height Nominal	44 in
Certificate Agency	cULus
Nbr. Of Units In Pkg.	1
Take-back	No
Customs Code	7326908688

Environment Attributes Main

China Rohs Regulation	Product out of China RoHS scope , Pro-active China RoHS declaration (out of China RoHS legal scope)
Reach Free Shvc	Yes
Toxic Heavy Metal Free	Yes
Carbon Footprint	316.653224424
Eu Rohs Directive	Compliant
Packaging Made With Recycled Cardboard	No
Reach Free Of Svhc	Yes
Pep Code	ENVPEP2510012EN
Pcr Version	PEP-PCR-ed4-2021 09 06
Type Of Verification For The Pep	Independent internal review

Take Back	No
Recycled Metal Content At Cr Level	0 %
Mercury Free	Yes
Environmental Disclosure	ENVPEP2510012EN
Nema Degree Of Protection	NEMA 3R/12
Packaging Without Single Use Plastic	No
Reach Regulation	Free of Substances of Very High Concern above the threshold
Pep Verification Date	2025-11-01
Psr Version	PSR-0005-ed3.1-EN-2023 12 08