Square D QOB110 - 10 A, 120 V, 1-Pole Bolt-On Circuit Breaker | AmpState

Introducing the Square D QOB110 — a precise, reliable 10A, 120V, 1-pole bolt-on molded case circuit breaker engineered for dependable branch circuit protection inside panelboards and load centers. Built to perform consistently, it safeguards circuits from overcurrent and short-circuit events while keeping your electrical system running smoothly.

• Secure bolt-on mounting delivers a rigid, vibration-resistant bus connection for steady electrical contact in installations where equipment movement or vibration is common.
• Thermal-magnetic trip unit provides stable, repeatable protection—the thermal element handles slow overloads while the magnetic element delivers instantaneous response to high-current faults.
• OEM-compatible design matches with corresponding Square D load centers and panelboards for straightforward upgrades and replacements.
• Versatile application ideal for residential, commercial, and light industrial environments where reliable protection is essential.

In practical terms, the QOB110 helps prevent nuisance trips from everyday loads while quickly interrupting fault conditions to protect wiring, devices, and downstream equipment. Its 1-pole, 10-amp rating is perfect for protecting individual branch circuits within standard 120-volt systems, making it a smart choice for panelboard refreshes, circuit upgrades, or emergency replacements.

Who benefits most

• Electricians performing panel maintenance or upgrades in homes and small offices
• Contractors wiring or re-wiring light commercial spaces
• Facilities managers maintaining reliability in commercial panelboards and load centers

Key specifications at a glance

• Manufacturer: Square D
• Part Number: QOB110
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 10A
• Voltage Rating: 120V
• Number of Poles: 1
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Whether you’re upgrading an existing panelboard, stocking parts for routine maintenance, or outfitting a new installation, the Square D QOB110 delivers dependable protection with a straightforward, compatible installation path. Trust AmpState for authentic Square D components designed to keep electrical systems safe, compliant, and performing at their best.