Load Center, 3 Phase, 3 Spaces, 3 Circuits, 100A Main Lugs, NEMA 3R
Square D

Square D QO403L100RB Load Center, 3 Phase, 3 Spaces, 3 Circuits, 100A Main Lugs, NEMA 3R

  • MPN: QO403L100RB
  • UPC: 785901207740
  • PPN: SCH-QO403L100RB

CAD

$188.92

/ EA

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Available to Ship Same/Next Business Day if In Stock and Ordered before 12:00 PM EST

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Spec sheet

Description

QO Load Centers offer premium features by allowing QO breakers, ground fault interrupters, arc fault interrupters, and surge arresters to be installed inside. QO Load Centers are designed for residential and industrial use to protect electrical systems, equipment, and people. They are available in both traditional and plug on neutral configurations. There is 3 types of mains available. There is main circuit breaker, main lugs, and generator panel. Single and three phase options are available. The bus bars are tin plated copper and are shielded. Indoor and outdoors enclosures are an option. QO Load Centers enable the use of a full complement of accessories. This 3 phase load center has 3 spaces and 3 circuits. This system provides 100A main lugs in a NEMA 3R enclosure. This product is UL and CSA rated.

Features

  • Engineered for a 100 Amp maximum capacity at 120/240 VAC, this main lug load center provides the robust, reliable power distribution required for demanding residential or light commercial applications. It is ideal for powering secondary structures like a detached garage, workshop, or outdoor living space, ensuring stable voltage delivery without overloading your main home panel.
  • Built with a rugged, NEMA Type 3R rainproof enclosure, this load center is specifically designed for outdoor installation, effectively shedding rain, ice, and snow. The durable metallic construction resists corrosion, saving you from premature replacement costs and ensuring long-term safety and code compliance in exposed environments.
  • This panel features a 3-space, 3-circuit configuration, specifically designed to accept standard QO circuit breakers. This compact layout eliminates guesswork during installation, providing the exact amount of space needed for dedicated, high-demand equipment like hot tubs, HVAC units, or EV chargers without paying for unused space.
  • Featuring straightforward top or bottom feed capabilities with a fixed main lug design, this panel streamlines the wiring process to significantly reduce installation time. The spacious gutter room allows for clean wire management and easy manipulation of larger gauge conductors, minimizing the frustration of cramped terminations.

Documentation & Downloads

Specifications

Additional

Amperage
100 A
Number of Phases
3 phases
Tightening Torque
35 lb.in (AWG 14 to AWG 10), 50 lb.in (AWG 3 to AWG 1), 40 lb.in (AWG 8 to AWG 4) aluminum/copper
Number of Circuits
3
Width
173 mm (6.81 in)
Enclosure Type
weatherproof NEMA 3R outdoor enclosure
Material
tin plated copper busbar
Product Type
Loadcenter
Wiring Configuration
3-wire, 4-wire
Mercury Free
Yes
RoHS Compliance
Compliant (EU, China)
Environmental Disclosure
ENVPEP2212001
Country of Origin
Mexico
Voltage Rating208Y/120 V AC, 240/120 V delta AC, 240 V delta AC
Short-Circuit Current Rating65 kA
Number of Spaces3
Height330 mm (12.99 in)
Depth102 mm (4.02 in)
Enclosure Materialwelded galvannealed steel
Surface Finishbaked enamel gray
Loadcenter TypeFixed Mains (lugs)
Device Compositiongrounding bar (ordered separately)
Reach Free Of SVHCYes
Product CertificationscULus
Toxic Heavy Metal FreeYes
Warranty18 months

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