Eaton HKD3350W - 350 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Eaton HKD3350W is a 350 A, 600 V, 3-pole bolt-on molded case circuit breaker engineered for dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Built to endure demanding electrical environments, this breaker combines rugged mounting with precise protection to keep critical systems up and running.

• Secure bolt-on mounting: a rigid, vibration-resistant bus connection that maintains stable electrical contact and consistent trip performance, even in equipment with heavy wiring or mechanical vibration.
• Thermal-magnetic trip unit: dual-mode protection that provides reliable thermal overload protection plus instantaneous magnetic trip for rapid response to short circuits, maintaining system safety across temperature changes.
• 3-pole coordination: designed for balanced 3‑phase systems, ensuring simultaneous disconnection on all poles for safe shutdown and fault isolation.
• OEM panel compatibility: engineered to work with matching Eaton OEM loadcenters and panelboards, simplifying replacement, upgrade projects, and panel uniformity.
• High-current capability: 350 A rating suits larger branch circuits in commercial, light industrial, and certain residential applications, reducing the need for multiple smaller breakers.
• 600 V rating: broad voltage compatibility that covers typical commercial and industrial panel configurations, delivering flexibility for multi-use installations.

This breaker is a practical choice for electricians and facility managers who value reliability, straightforward installation, and panel-to-panel consistency. By choosing the HKD3350W, you gain a robust, long-lasting protection device that aligns with Eaton’s engineering standards and OEM panel expectations—now readily available from AmpState, a trusted source for essential electrical components.

Technical specifications

• Manufacturer: Eaton
• Part number: HKD3350W
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 350 A
• Voltage rating: 600 V
• Number of poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Use cases to consider: upgrading a residential or light commercial distribution panel with a single, high-capacity breaker for a major branch circuit, or replacing a worn-out 3-pole unit in an OEM-style loadcenter where panel compatibility and bus integrity are critical. For new installations, pair the HKD3350W with matched Eaton panels to ensure optimal alignment of bus connections and protective coordination, reducing troubleshooting time and maintenance later on.