Square D QO345 Circuit Breaker – 45A – 3-Pole – 120/240V – 10kA – Plug-In – QO Series Square D QO345 Circuit Breaker

The Square D QO345 is a 45A, 3-pole plug-in circuit breaker designed for compatible Square D electrical distribution equipment. It is rated for 120/240V systems and provides a 10,000A interrupting rating for reliable circuit protection.

The breaker is part of the Square D QO Series and is designed for use with compatible QO load centers, CSEDs, and NQOD panelboards. Its compact plug-in configuration provides convenient installation in compatible equipment.

Specifications

• Brand: Square D
• Manufacturer: Schneider Electric
• Product Type: Circuit Breaker
• Series: QO
• Catalog No.: QO345
• Current Rating: 45A
• Number of Poles: 3-Pole
• Phase: 3-Phase
• Voltage Rating: 120/240V
• Interrupting Rating: 10,000A
• Mounting Type: Plug-In
• Connection Type: Plug-In
• Dimensions (H × W × L): 3 × 1.50 × 3 in
• Application: Circuit Protection
• Authenticity: Authentic Square D Product

Part Numbers & Identification

• Manufacturer Part Number (MPN): QO345
• Catalog Number: QO345
• Alternate Model: Q0345
• Product Family: QO Series
• Brand: Square D
• Manufacturer: Schneider Electric
• Product Type: 45A Circuit Breaker
• Model: QO345
• upc:785901012481

Compatibility

Designed for use with compatible Square D QO load centers, CSEDs, and NQOD panelboards that accept QO Series plug-in circuit breakers. The QO345 is suitable for compatible 45A, 3-pole, 120/240V, 3-phase applications.

Always verify the exact load center or panelboard model, system voltage, interrupting requirements, mounting configuration, and approved breaker combinations before installation.

Certifications

• CSA Approved
• UL Listed
• Authentic Square D Product

Returns are easy

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

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My Circuit Breakers provides a comprehensive 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer). Extended warranties are available upon request.