Square D FH16070 A - 70 A, 277 V, 1-Pole Plug-In Circuit Breaker | AmpState

The Square D FH16070A 70A, 277V, 1-Pole Plug-In Circuit Breaker is a rugged, go-to solution for dependable branch circuit protection in panelboards and loadcenters. Designed for quick installs and seamless replacements, this molded-case breaker keeps electrical systems safe while minimizing downtime on service calls and upgrades.

Why this 1-Pole Plug-In Breaker stands out

• Fast plug-in connection: the plug-in mounting style simplifies installation and streamlined maintenance, enabling rapid swaps during upgrades or fault repair.
• Thermal-magnetic trip unit: delivers stable, repeatable protection by responding to both overload current and rapid current surges, reducing nuisance trips and protecting sensitive circuits.
• 277V rating: ideal for commercial lighting, office spaces, and other low-to-medium voltage applications where single-pole protection is required.
• Factory compatibility: engineered to pair with matching OEM loadcenters and panelboards, ensuring reliable fit and coordinated protection across your distribution system.
• Rugged molded-case construction: built to endure everyday electrical environments in residential, commercial, and light industrial settings.

Ideal use cases

Whether you’re upgrading a residential panel to add a single-pole protection for a new circuit, stocking a maintenance closet for quick replacements, or outfitting a small commercial panel for lighting or receptacle circuits, the FH16070A delivers dependable performance. Its 70A rating gives you robust protection for higher-demand loads while maintaining precise control over overcurrent conditions.

Technical specifications at a glance

• Manufacturer: Square D
• Part number: FH16070A
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 70A
• Voltage rating: 277V
• Number of poles: 1
• Mounting style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Practical installation tips

Before installation, confirm the panelboard or loadcenter listing includes FH16070A as a compatible option. Follow the manufacturer’s torque specifications for secure terminations, and ensure the surrounding panel labeling reflects the new protection. For best results, pair this plug-in breaker with the matching OEM equipment to maintain coordinated protection and service life.