Square D QO1151021 Miniature Circuit Breaker – 15A – 1 Pole – 240V – Plug-In – Thermal Magnetic – QO Series

The Square D QO1151021 is a plug-in miniature circuit breaker designed for residential and light commercial load centers. It provides reliable overload and short-circuit protection using thermal magnetic trip technology. Built for QO load centers and compatible panelboards, it ensures fast response to electrical faults while maintaining compact form and ease of installation.

Electrical Ratings

• Current Rating: 15 A
• Voltage Rating: 240 VAC
• Phase: 1 Phase
• Poles: 1 Pole
• Frequency: 50/60 Hz
• Interrupting Rating: 10 kA @ 240 VAC

Protection and Function

• Trip Technology: Thermal Magnetic
• Trip Functions: Standard Overload and Instantaneous Protection
• Protection Type: Short-Circuit and Overload Protection
• Application: Residential and light commercial branch circuit protection

Configuration and Function

• Series: QO Series (Square D / Schneider Electric)
• Model: QO1151021
• Frame Type: QO Miniature Frame
• Mounting Style: Plug-In
• Terminal Type: Box Lug
• Compatible Systems: QO Load Centers, NQOD Panelboards, OEM Speed-D interiors

Mechanical and Physical Characteristics

• Compact miniature breaker design
• Plug-in installation for fast mounting
• Standard QO VISI-TRIP indication system (typical for QO series)
• Designed for panelboard integration
• Lightweight residential breaker construction

Standards and Certifications

• UL Listed
• CSA Certified
• Schneider Electric / Square D manufactured
• Meets standard North American electrical distribution codes

Features

• Reliable thermal magnetic protection
• Fast plug-in installation in QO load centers
• Compact design for residential panelboards
• High reliability for branch circuit protection
• Compatible with QO series distribution systems
• Designed for safe interruption of overload and fault currents
• Durable construction for long service life
• Industry-standard residential breaker platform

Returns are easy

You may return items within 30 days of delivery for a refund.

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My Circuit Breakers offers one to five day delivery in the United States. The variation depends on the chosen shipping speed and the warehouse location for the product(s).

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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.