The Square D main lug load center is an ideal choice for distributing power downstream from main breakers when all the circuit slots in the main breaker load center are full or a remote panel is desired. Designed to work with QO series circuit breakers, these load centers provide reliable protection against overcurrents, making them suitable for residential, commercial, and industrial applications. With 3 phase spaces and a rating of 60A, these durable load centers ensure steady power distribution to your equipment, reducing the risk of disruptions or power failures. Whether you're looking to improve your home's electrical system or upgrade your office space, this Square D main lug load center offers unmatched performance and reliability at an affordable price.
Top product features:
3 phase spaces for distributing power to multiple appliances
Rugged construction for durability and long-lasting use
Compatibility with QO series circuit breakers for reliable protection against overcurrents
Top product applications:
Residential homes requiring extra load center space for multiple appliances
Commercial buildings for distributing power to various devices
Industrial settings for reliable power distribution in large facilities
These Square D main lug load centers distribute power downstream from main breakers and are used when all the circuit slots in the main breaker load center are full or when a remote panel is desired. They're used with QO series circuit breakers to protect circuits from overcurrents. They are used in residential, commercial, and industrial applications.
Technical Specifications
ItemLoad Center
Number of Spaces3
Amps60 A
Voltage208Y/120/240V AC
Circuit Breaker TypeQO
Included Enclosure CoverSurface Cover
Main Circuit Breaker or Main LugMain Lug
Max. No. of Tandem Breakers0
Phase3
SeriesQO
Height13 3/16 in
Width6 15/16 in
Depth4 in
For Use WithSquare D QO Circuit Breakers
Bus MaterialTin Plated Aluminum
Short Circuit Current Rating65kA
Enclosure NEMA Rating3R
Cover Attachment StyleTop Hinge
Cover Closure MethodLatch
Recommended Ground Bar Kit5B718
Recommended Surface CoverIncluded
ColorGray
Enclosure MaterialGalvanized Steel
Enclosure Surface FinishEnamel
Feed LocationTop/Bottom
Max. Operating Temp.104 Degrees F
Min. Operating Temp.23 Degrees F
Special FeaturesMercury Free
LocationOutdoor
StandardsRoHS Compliant, UL Listed
Manufacturer Details
Manufacturer: Square D
Condensed Mfg Number: QO403L60NRB
MPN: QO403L60NRB
Label Details
Hazardous Material: N
Green Material Flag: N
Country of Origin: MX
CA Prop 65 Wht Label: N
Classification Details
Harmonization Code: 8536904000
GDS Category Name: Load Centers and Panelboards
GDS Family Name: Distribution
GDS Segment Name: Electrical
UNSPSC: 39121101
UNSPSC Class ID: 11
UNSPSC Commodity Name: Distribution and control centers and accessories
UNSPSC Commodity ID: 01
UNSPSC Commodity Name: Load centers
UNSPSC Family ID: 12
UNSPSC Family Name: Electrical equipment and components and supplies
UNSPSC Segment ID: 39
UNSPSC Segment Name: Electrical Systems and Lighting and Components and Accessories and Supplies
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