Square D QO170 70A 1P Circuit Breaker, QO, Plug-On | AmpState

Meet the Square D QO170 — a 70 A, 1-pole circuit breaker built for dependable protection in panelboards, load centers, and electrical distribution networks. Designed for the QO family and offered by AmpState, this plug-on breaker delivers fast, secure installations and reliable performance where it matters most.

• Single-pole, 70 amp protection— precisely protects one circuit from overloads and short circuits within your distribution system.
• QO Plug-On design— streamlined installation with clean, dependable connections that speed up service and reduce field labor.
• Replacement-ready— ideal for repair projects where maintaining the original part number is important to keep the BOM aligned.
• Stock-ready spare— keep this 1P, 70A breaker on hand to minimize downtime and ensure quick swaps in critical panels.
• Trusted compatibility— engineered to fit panelboards and load centers that accept QO-series breakers, helping you avoid fitment guesswork during upgrades or repairs.
• AmpState availability— readily available through AmpState, with support to confirm fit and compatibility if you’re matching a part number for a retrofit.

Product at a glance

• Part Number: QO170
• Manufacturer: Square D
• Product Type: Circuit Breaker
• Amperage: 70 A
• Poles: 1 Pole
• Style: QO, Plug-On
• Availability: AmpState

Whether you’re stocking spares to ensure BOM integrity or tackling a replacement project that requires precise part matching, the QO170 delivers reliable protection and straightforward installation. If you’re unsure about compatibility, reach out—AmpState is equipped to help you confirm fit and ensure your panelboard or load center keeps running safely and efficiently.