Square D | PLL34100U44A | Circuit Breaker | 1000A | 3-Pole | 480V

Meet the Square D PLL34100U44A circuit breaker—a robust, industrial-grade protection device designed for demanding 480V three-phase systems. With a 1000A rating and a 3-pole configuration, this unit is purpose-built for maintenance, retrofit, and replacement projects where exact specifications matter and reliability is non‑negotiable.

Key specifications

• Amperage: 1000A
• Poles: 3-Pole
• Voltage: 480V
• Part reference: PLL34100U44A

Compatibility reminder: Confirm fit and ratings before ordering. The part number PLL34100U44A is the best reference for compatibility with your panel or switchgear.

Why this Square D breaker stands out

• Genuine Square D component ensures seamless integration with compatible Square D panels and gear, reducing misfit risk and installation headaches.
• High-current reliability built for industrial environments where heavy loads and motor starting are common.
• Retrofit-ready designed to replace existing 3-pole, 480V protections without major panel modifications.
• Clear, traceable reference using the PLL34100U44A part number streamlines ordering and future maintenance.

Practical use cases and benefits

• Ideal for 480V, three-phase distribution in manufacturing floors, large HVAC installations, and heavy machinery circuits.
• Supports dependable disconnection and overcurrent protection for critical feeders, helping minimize downtime during maintenance windows.
• Suitable for retrofit projects where existing equipment requires exact-spec replacements to preserve panel ratings and fault protection sequences.
• A single, precise replacement part reduces inventory complexity and accelerates repairs compared with generic equivalents.

Installation and care tips

• Verify panel compatibility by cross-referencing the PLL34100U44A part number with your current equipment before installation.
• Ensure conductors and bus stabs match the breaker’s mounting style and rating for a secure, compliant fit.
• Follow the panel manufacturer’s guidelines for torque and mounting procedures to maintain proper electrical contact and protection performance.

When you need dependable 1000A protection for 480V three-phase systems, the Square D PLL34100U44A circuit breaker delivers precise compatibility, durable construction, and straightforward retrofit capability. Use the part number as your primary reference to confirm fit, and choose this unit for a reliable, long-term solution in industrial power distribution.