Square D QO270 - 70 A, 240 V, 2-Pole Plug-In Circuit Breaker | AmpState

Introducing the Square D QO270 from AmpState — a 70A, 240V, 2-pole plug-in molded-case circuit breaker engineered to safeguard panelboards and load centers from overloads and short circuits. Designed for quick installation and dependable protection, it’s a practical upgrade for residential, commercial, and light industrial electrical systems.

• Fast plug-in connection for quick installation or replacement, minimizing downtime during service calls or panel upgrades.
• Thermal-magnetic trip unit delivers stable, repeatable protection: thermal for gradual overload and magnetic for instantaneous response to short circuits.
• 70A, 240V, 2-pole design provides coordinated protection for two opposite-phase conductors in a single slot, ideal for multi-wire branch circuits.
• Compatibility with matching OEM load centers and panelboards to ensure proper fitment and labeling in your electrical panel.
• Versatile applications suitable for residential panels, light commercial equipment, and small industrial installations.

Why this matters: a plug-in breaker that matches your Square D OEM panel reduces retrofit time, avoids compatibility issues, and maintains proper trip characteristics and coordination with other protective devices. The QO270 is designed to fit standard QO-series slots, ensuring reliable engagement and secure electrical contact.

Practical use cases

• Replacing a failed 2-pole breaker in a Square D QO panel or compatible loadcenter without disturbing the entire bus assembly.
• Adding branch circuit protection for a 240V circuit in a home workshop or small office electrical room.
• Upgrading an aging panel to maintain code-compliant protection for critical circuits like HVAC equipment or water heating systems.

Technical specs at a glance

• Manufacturer: Square D
• Part number: QO270
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 70A
• Voltage rating: 240V
• Poles: 2
• Mounting style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Installation and safety tips: Always power down the panel before work, verify the enclosure is rated for QO breakers, and follow local electrical codes. Ensure bus stabs are clean and free of corrosion for reliable tripping characteristics and long-term performance.

Choosing AmpState means reliability and practical support for your electrical protection needs. The Square D QO270 delivers precise, dependable 2-pole 240V protection with fast installation, compatible with your existing load centers and panelboards and ready to handle the demands of residential, commercial, and light industrial applications.