Square D | QO135 | Circuit Breaker | 1-Pole | 240V | Plug-In

Meet Square D QO135, a 1-pole, 240V plug-in circuit breaker built for maintenance, retrofit, and replacement projects where exact compatibility matters. Identified by the part number QO135, this breaker is designed to slot into Square D QO-style panels, delivering reliable interruption of fault currents and consistent circuit protection.

Key specifications

• Pole: 1-Pole
• Voltage: 240V
• Design: Plug-In
• Reference: Part number QO135

Why choose the QO135 for your panel

• Specifically matched for Square D QO-series panels, ensuring a dependable fit and reliable performance with 240V circuits.
• Plug-in installation minimizes downtime—swap in quickly during maintenance or retrofit work without complex rewiring.
• Ideal for replacement scenarios where a precise, documented part reference is needed to maintain panel protection and code compliance.
• Clear compatibility guidance: always verify the fit and ratings before ordering to ensure seamless integration with your existing system.

Use cases and practical scenarios

Perfect for upgrading or restoring protection in residential or light commercial electrical setups that rely on Square D QO panels. Use the QO135 during routine maintenance to replace a failing breaker, during a panel retrofit to align with updated electrical needs, or as a direct, on-site replacement when the original part number is QO135.

Installation and compatibility notes

Before ordering, confirm fit and ratings to guarantee compatibility with your panel. The QO135 part number is your best reference for ensuring the breaker will function correctly within your electrical system.