Eaton HMDL3450 - 450 A, 600 V, 3-Pole Circuit Breaker | AmpState

Meet the Eaton HMDL3450 — a 450 A, 600 V, 3-pole molded case circuit breaker designed to shield panelboards and loadcenters from overcurrent and short-circuit events with dependable consistency.

Its compact molded-case design maximizes panel space, helping you fit more protection into tighter electrical enclosures. The thermal-magnetic trip unit delivers stable, repeatable protection performance by combining thermal overload protection with instantaneous magnetic trip response. This means faster fault clearing for damaging faults and reduced nuisance trips during normal operation.

Key advantages

• Three-pole configuration suitable for balanced three-phase systems
• 450 A continuous amperage rating for substantial branch circuits
• 600 V maximum rating for commercial and light industrial equipment
• Space-saving molded-case design to optimize panel density
• Thermal-magnetic trip for reliable overload and short-circuit protection
• OEM-compatible with Eaton’s matching loadcenters and panelboards for straightforward upgrades
• Versatile across residential, commercial, and light industrial applications

Technical specifications at a glance

• Manufacturer: Eaton
• Part number: HMDL3450
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 450 A
• Voltage rating: 600 V
• Number of poles: 3
• Application: Branch circuit protection for overcurrent and short circuits

Ideal use cases

• New installations or upgrades in panelboards and loadcenters requiring robust 3-phase protection
• Retrofits that demand higher current capacity while preserving panel layout
• Commercial and light industrial electrical distribution where dependable fault protection is essential
• Situations needing compact, space-efficient protection without compromising safety or performance

Compatibility and installation: This breaker is designed for use with matching OEM Eaton loadcenters and panelboards to ensure proper fit and coordinated trip performance. For best results, installation should be performed by a qualified electrician in accordance with local electrical codes and manufacturer guidelines.