NEW SQUARE D QOB1201021 CIRCUIT BREAKER QOB1201021

Description:

The Square D QOB1201021 Circuit Breaker is a miniature over‑current protective device used in electrical distribution systems to protect branch circuits from overloads and short circuit faults. Installed in residential, commercial, and light industrial panelboards where dependable circuit protection and quick fault interruption are required. Electricians and maintenance teams use this breaker for replacement, retrofit, and system upgrades to ensure safe and code‑compliant branch circuit protection.

Applications:

The Square D QOB1201021 breaker is used to protect lighting circuits, receptacle feeds, HVAC units, and small equipment loads in homes, offices, retail spaces, and light commercial facilities. Its compact design and standardized panel mount form factor make it suitable for branch circuit protection in distribution boards and load centers where reliable interruption of fault currents is essential.

Technical Specifications:

• Manufacturer: Schneider Electric / Square D
• Model / Part Number: QOB1201021
• Product Type: Miniature Circuit Breaker (MCB)
• Number of Poles: Single‑pole
• Rated Current: 20 A
• Voltage Rating: 120/240 V AC
• Trip Type: Thermal‑magnetic
• Interrupting Capacity: Typical 10 kA @ 120/240 V AC
• Mounting: Panelboard mount
• Standards: UL 489 / CSA Certified
• Application: Branch circuit over‑current protection

Common Replacements:

• Square D QO120EPD 20 A breaker
• Schneider Electric QOB12020
• Eaton BR120 20 A breaker