Square D QOU3100 Miniature Circuit Breaker – 100A – 3-Pole – 120/240V AC – 10kA – Unit Mount – QOU Series

The Square D QOU3100 is a 100A, 3-pole miniature circuit breaker from the QOU Series, designed to provide overcurrent protection in compatible electrical distribution systems. It has a 120/240V AC system voltage rating and a 10kA interrupting rating at 120/240V, 120V, and 240V AC, with a 5kA interrupting rating at 60V DC.

The breaker features thermal-magnetic protection, slotted box-lug connections on both the line and load sides, and accommodates 12–2/0 AWG copper or aluminum conductors. It uses a unit-mount configuration and is suitable for compatible 35 mm DIN rail, flush, or surface mounting applications.

Specifications:

• Brand: Square D
• Manufacturer: Schneider Electric
• Product Type: Miniature Circuit Breaker
• Series: QOU
• Current Rating: 100A
• Number of Poles: 3-Pole
• Phase: 3-Phase
• System Voltage: 120V AC, 120/240V AC, 240V AC, 60V DC
• AC Interrupting Rating: 10kA @ 120/240V AC, 120V AC, and 240V AC
• DC Interrupting Rating: 5kA @ 60V DC
• Circuit Breaker Type: Standard
• Trip Technology: Thermal-Magnetic
• Mounting Mode: Unit Mount
• Mounting Compatibility: 35 mm DIN Rail / Flush / Surface Mount
• Electrical Connection: Slotted Box Lugs, Line Side and Load Side
• Wire Range: 12–2/0 AWG Copper or Aluminum
• Protection: Overcurrent Protection
• Height: 4.45 in
• Width: 2.25 in
• Depth: 2.95 in
• Application: Overcurrent protection for compatible electrical distribution systems

Part Numbers & Identification:

• Manufacturer Part Number (MPN): QOU3100
• Catalog Number: QOU3100
• Alternate Model: Q0U3100
• Product Family: QOU Series Circuit Breakers
• Brand: Square D
• Manufacturer: Schneider Electric
• Product Type: 100A Miniature Circuit Breaker
• upc:785901060338

Compatibility:

Designed for use with compatible Square D QOU Series electrical distribution equipment supporting 3-pole, 100A miniature circuit breakers. The QOU3100 supports 120/240V AC applications and provides overcurrent protection through thermal-magnetic operation. Its unit-mount design supports compatible 35 mm DIN rail, flush, and surface-mount installations.

Always verify the specific equipment model, mounting arrangement, approved breaker type, system voltage, conductor size, and interrupting rating before installation.

Certifications:

• CSA Certified
• IEC Certified
• UL Listed
• Authentic Square D Product

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You may return items within 10 days of delivery for a refund.

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