Square D QOB135 - 35 A, 120 V, 1-Pole Bolt-On Circuit Breaker | AmpState

The Square D QOB135 is a 1-pole, 35A, 120V bolt-on molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built for solid, vibration-free performance, its bolt-on mounting creates a rigid connection to the bus, helping to minimize loosening and maintain consistent electrical contact over time.

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection for reliable, long-lasting protection.
• Thermal-magnetic trip unit delivers stable, repeatable protection—fast response to short circuits and sensible protection against sustained overloads.
• 1-pole, 35A at 120V is ideal for single-phase branch circuits requiring robust protection without excessive interruption.
• OEM compatibility designed to work with matching Square D load centers and panelboards, ensuring proper fit and performance.
• Versatile for multiple environments suitable for residential, commercial, and light industrial applications where reliable circuit protection is essential.

What it protects and why it matters: the QOB135 safeguards individual branch circuits from overcurrent and short circuits, helping prevent wiring damage, nuisance trips, and potential electrical fires. The combination of a thermal (overload) and magnetic (short-circuit) mechanism provides a balanced, predictable response that aligns with real-world electrical loads.

Ideal use scenarios

• Residential panels and subpanels requiring dependable single-pole protection for critical lighting or receptacle circuits.
• Commercial installations where compact, bolt-on breakers fit the panel design and load requirements.
• Light industrial setups that demand robust protection for dedicated circuits operating at 120V.
• Upgrading or replacing existing Square D QOB135 units in compatible panelboards to maintain consistent protection performance.

Technical snapshot

• Manufacturer: Square D
• Part number: QOB135
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 35 A
• Voltage rating: 120 V
• Number of poles: 1
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Choose the Square D QOB135 for a proven, reliable solution that aligns with OEM panel designs and delivers predictable protection where it matters most. Add to cart to secure dependable circuit protection for your panelboard or load center.