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

The Square D QO1151021 is a QO-series miniature circuit breaker designed for residential and light commercial panelboard applications. It provides dependable overcurrent protection using thermal magnetic trip technology. Designed for plug-in installation in compatible Square D QO load centers, it delivers fast fault interruption and reliable circuit protection for lighting and appliance branch circuits.

Electrical Ratings

• Current Rating: 15 A
• Voltage Rating: 240 VAC
• Phase: 1 Phase
• Poles: 1 Pole
• System Compatibility: 120/240 VAC systems (50/60 Hz)
• Interrupting Rating: Typically 10 kA @ 240 VAC for QO series applications (varies by installation system)

Protection and Function

• Trip Technology: Thermal Magnetic
• Trip Functions: Long-Time and Instantaneous
• Protection Type: Overload and Short-Circuit Protection
• Application: Appliance, lighting, HVAC, and general branch circuit protection

Configuration and Function

• Series: QO Series
• Model: QO1151021
• Frame Type: QO Frame
• Connection Type: Plug-In
• Terminal Configuration: Pressure plate terminals
• Mounting Style: Plug-in (QO load center compatible)
• Sub-category: Miniature branch circuit breaker (1-pole)

Mechanical and Physical Characteristics

• Compact molded case construction
• Plug-in mounting for QO panelboards
• Thermal magnetic trip mechanism
• Designed for quick installation and replacement
• Built-in Visi-Trip indicator (on many QO variants)
• High durability for repeated switching cycles

Standards and Certifications

• UL Listed
• CSA Certified
• Manufactured by Schneider Electric / Square D
• RoHS / REACH compliant (series dependent)
• UNSPSC: 39121603

Features

• Reliable thermal magnetic protection
• Fast fault clearing for improved electrical safety
• Compact plug-in design for QO load centers
• Suitable for residential and light commercial use
• Durable molded case housing
• Wide compatibility within QO panelboard systems
• Long service life and stable performance in branch circuits

Returns are easy

You may return items within 30 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.