Eaton HJD3100 - 100 A, 600 V, 3-Pole Circuit Breaker | AmpState

Engineered for dependable branch-circuit protection, the Eaton HJD3100 is a 3-pole molded-case circuit breaker rated 100 A at up to 600 V. Designed to integrate with Eaton-compatible panelboards and load centers, this unit marries a compact footprint with robust protection for demanding electrical environments.

Key specifications

• Amperage rating: 100 A
• Voltage rating: 600 V
• Number of poles: 3
• Type: Thermal-magnetic molded case circuit breaker
• Trip mechanism: Thermal-magnetic trip unit for stable, repeatable protection
• Applications: Branch circuit overcurrent and short-circuit protection
• Compatibility: Matches OEM load centers and panelboards

Why this breaker stands out

• Space-efficient molded-case design: Maximizes panel real estate, helping you fit multiple protection devices in compact subsystems and crowded panels without compromising safety.
• Reliable protection with a thermal-magnetic trip unit: Delivers stable performance across temperature variations, delivering prompt short-circuit clearing while minimizing nuisance trips on mild overloads.
• True 3-phase protection: 3-pole configuration supports three-phase systems, essential for commercial and light-industrial panels, while still suitable for versatile residential applications where three conductors are present.
• OEM-panel compatibility: Engineered to pair seamlessly with matching Eaton OEM loadcenters and panelboards, simplifying replacement, retrofits, and maintenance.
• Durable, dependable protection you can trust: Designed for ongoing reliability in daily duty, guarding wiring, devices, and downstream circuits from overcurrent and short circuits.

Ideal use cases and scenarios

• Upgrading or replacing protection in Eaton-compatible panelboards in residential, commercial, or light-industrial environments.
• Installing three-phase branch-circuit protection where compact sizing and precise tripping behavior are critical.
• Retrofits in existing panels that require a matching OEM breaker profile to maintain listing and warranty coverage.
• New construction projects where space constraints demand a compact molded-case solution without sacrificing protection quality.

Practical tips for use and installation

• Verify panel compatibility by confirming the HJD3100 part number aligns with your Eaton loadcenter or panelboard model.
• Use in circuits where a 3-pole, 100 A breaker is appropriate for protecting three-phase or multi-wire distribution paths up to 600 V.
• Plan for proper enclosure labeling and clear identification of protected circuits to streamline maintenance and future work.
• Keep a spare compatible unit on hand for quick replacement, reducing downtime during service calls or upgrades.

Efficient by design, the Eaton HJD3100 — 100 A, 600 V, 3-pole molded-case circuit breaker — delivers dependable branch-circuit and short-circuit protection with a compact footprint, tailored for modern panelboards and loadcenters across residential, commercial, and light-industrial settings. When dependable protection and panel-space efficiency matter, this breaker is a precise fit for your Eaton-based electrical system.