Eaton | HLDB3350C | Circuit Breaker | 350A | 3-Pole

The Eaton HLDB3350C circuit breaker is engineered to deliver reliable overload and short-circuit protection for demanding 3-phase power systems. With a robust 350A rating and three poles, this unit is purpose-built for maintenance, retrofit, and replacement projects where exact Eaton specifications are non-negotiable.

Key specifications

• Amperage: 350A
• Poles: 3-Pole
• Part number: HLDB3350C
• Compatibility note: Confirm fit and ratings before ordering. The part number HLDB3350C is the best reference for compatibility.

Why choose the HLDB3350C

Designed as a genuine Eaton replacement, the HLDB3350C mirrors Eaton’s established protection characteristics for three-phase systems. The 350A rating provides decisive main-feed protection for high-load equipment, ensuring that large motors, feeders, and other heavy circuits stay safeguarded. The 3-pole design delivers balanced protection across all phases, helping prevent phase imbalances that can stress downstream components and shorten equipment life.

Ideal use cases

• Maintenance and service continuity for existing Eaton panels and switchgear
• Retrofit projects where exact specifications are required to restore protective sizing
• Replacement in industrial 3-phase distribution setups that demand reliable, long-term protection

How to verify compatibility

Always reference the HLDB3350C part number when cross-checking against panel catalogs or labeling. Compare form factor, trip characteristics, and amp rating to ensure a precise match. If you’re upgrading or replacing, consult your panel’s documentation or a qualified electrician to confirm fitment.

Installation and safety tips

Power down the system fully before replacement. Use appropriate lockout/tagout procedures and personal protective equipment. Follow local electrical codes and manufacturer guidelines to ensure a safe, compliant installation. If you’re not a licensed electrician, arrange professional installation to maximize safety and performance.

With the Eaton HLDB3350C, you’re selecting a trusted, high-capacity circuit breaker designed to support demanding 3-phase applications. Its precise amperage, three-pole architecture, and clear compatibility reference make it an economical, reliable choice for maintaining and upgrading industrial electrical infrastructure.