Square D FA34070 - 70A, 480VAC, 3-Pole, Circuit Breaker

The Square D FA34070 is a 70A, 480VAC, 3-Pole Circuit Breaker designed to deliver reliable, three-phase overcurrent protection in demanding industrial environments. Built to protect distribution panels and motor control centers, this FA34070 unit combines robust performance with a compact, three-pole design that ensures coordinated shutdown of all phases when protection is required.

Key specifications

• Current rating: 70 A
• Voltage rating: up to 480 VAC
• Poles: 3-Pole
• Breaker type: Circuit Breaker

Why the 3-Pole design matters

Three-pole configurations are essential for true three-phase systems. The FA34070 safeguards all three phases simultaneously, reducing the risk of unbalanced loads and phase-to-ground faults. This makes it an ideal choice for motors, conveyors, pumps, and other equipment that rely on stable three-phase power in industrial facilities.

Ideal use cases

• Panelboards and switchboards in manufacturing lines where three-phase protection is critical
• Motor control centers (MCCs) and drive systems requiring dependable phase isolation during faults
• OEM equipment assemblies that demand a rugged 70 A, 480 VAC protective device
• Commercial facilities with three-phase distribution networks up to 480 VAC

What makes it uniquely valuable

• High-voltage suitability: 480 VAC rating supports common three-phase distribution across medium-to-large facilities
• Dedicated three-pole configuration provides coordinated protection across all phases, improving system resilience
• Square D reliability: a proven solution in distribution panels and motor control centers, designed to withstand industrial duty environments

Installation and practical considerations

• Compatible with standard panelboard and switchboard layouts that accommodate 3-Pole breakers
• Ideal for installations where space and wiring efficiency matter due to three-phase routing
• Use as the primary protection device for feeders feeding motors, contactors, and critical loads in automation lines

For engineers and technicians building or upgrading electrical distribution systems, the Square D FA34070 delivers concrete, actionable protection with a clear focus on three-phase reliability. Its 70 A rating at 480 VAC ensures you’re protected where it matters most—keeping equipment safe, downtime brief, and operations running smoothly in industrial, commercial, and OEM applications.