Eaton HMDL3700 - 700 A, 600 V, 3-Pole Circuit Breaker | AmpState

The Eaton HMDL3700 is a high-capacity three-pole molded-case circuit breaker engineered to protect large branch circuits with precision in panelboards and loadcenters. With a robust 700 A rating and a 600 V maximum, this breaker is designed to handle demanding commercial and light industrial environments while preserving valuable panel space thanks to its compact molded-case design.

Key features that differentiate the HMDL3700:

• 700 A continuous current rating — trusted capacity to safeguard heavy feeders and large-duty circuits without nuisance trips in everyday operation.
• 600 V maximum voltage rating — suitable for typical commercial and light industrial power distributions.
• 3-pole configuration — ideal for 3-phase systems, providing coordinated protection across all live conductors.
• Thermal-magnetic trip unit — delivers stable, repeatable protection by combining overload (thermal) sensing with fast magnetic trip for short-circuit faults.
• OEM-ready compatibility — designed to drop into matching Eaton OEM loadcenters and panelboards, ensuring proper fit, bus compatibility, and coordinated protection.
• Versatile application range — well-suited for residential, commercial, and light industrial electrical installations where reliable overcurrent and short-circuit protection is essential.

Technical specifications

• Manufacturer: Eaton
• Part number: HMDL3700
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 700 A
• Voltage rating: 600 V
• Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Who benefits most from the Eaton HMDL3700? electrical professionals designing or refurbishing panels for warehouses, retail spaces, multi-tenant commercial buildings, or light industrial equipment enclosures where large feeders require dependable protection. It’s also a practical choice when upgrading existing panelboards that rely on compatible Eaton hardware for seamless integration and coordinated tripping performance.

Practical usage notes:

• Pair with compatible Eaton loadcenters/panelboards to ensure correct bus alignment and protection coordination.
• Ideal as a main or large feeder breaker in systems where three-phase distribution is standard.
• Use in environments where space efficiency within the panel matters, without sacrificing protection capability.

Shop confidently with AmpState, a trusted source for genuine Eaton breakers. The HMDL3700 delivers proven protection, thoughtful design, and a clear path to reliable electrical distribution across demanding commercial and light industrial applications.