Square D | PLL34120 | Circuit Breaker | 1200A | 3-Pole | 480V

Meet the Square D PLL34120 Circuit Breaker—the rugged, high-capacity protection device designed for demanding 3-phase power systems. With a 1200A rating, 3-pole configuration, and 480V operation, this breaker is built to guard heavy-duty electrical feeds in industrial environments. Specifically suited for maintenance, retrofit, and replacement projects where exact specifications matter, PLL34120 is a genuine Square D component you can trust.

Key specifications at a glance

• Amperage: 1200A
• Poles: 3-Pole
• Voltage: 480V
• Brand and part reference: Square D PLL34120

Why this PLL34120 stands out

In high-demand installations, consistent, coordinated protection across all three phases is essential. The PLL34120 delivers precise trip characteristics for 480V three-phase circuits, helping to minimize downtime and protect valuable equipment. As a genuine Square D part, it carries the brand’s legacy of durable mechanical operation, reliable contact performance, and long-term protection for your distribution panels and MCCs. This isn’t a generic drop-in part—it’s a purpose-built solution designed to align with your existing Square D infrastructure and protection scheme.

Ideal applications and use cases

• Industrial motor feeders and motor control centers operating on 480V three-phase systems
• Replacement or retrofit in panels and distribution boards that require 1200A, 3-pole protection
• Spare-part stock for facilities with PLL-series Square D equipment to ensure quick maintenance cycles

Fitment, compatibility, and practical tips

Notes: Confirm fit and ratings before ordering. The part number PLL34120 is the best reference for compatibility with your panel and 480V, 3-pole configuration.

• Cross-check your panel labeling and service manual to ensure the PLL34120 matches the frame and bus arrangement of your Square D system.
• Plan maintenance with a spare PLL34120 on hand to reduce downtime during scheduled outages.
• Handle with standard electrical safety practices—de-energize the circuit, verify absence of voltage, and use appropriate PPE during installation or replacement.