Eaton HFD3100S 100A 3-Pole 600 V Circuit Breaker

The Eaton HFD3100S is a robust 100A circuit breaker engineered for reliable three‑phase protection in commercial and light industrial electrical systems. With a three‑pole design and a 600 V rating, this breaker is purpose-built to safely interrupt fault currents across all phases, helping safeguard motors, drives, and other high‑demand equipment.

Key specifications

• Current rating: 100 A
• Poles: 3 (three‑pole design for three‑phase systems)
• Voltage rating: 600 V
• Part number: HFD3100S

Why this matters

In three‑phase installations, coordinated protection across all conductors is essential. The HFD3100S provides clean, reliable tripping behavior to minimize downtime and protect valuable equipment from overloads and short circuits. Its Eaton lineage offers consistency in performance and support within Eaton‑compatible panels and protection schemes.

Ideal use scenarios

• Three‑phase distribution panels in office campuses, manufacturing floors, and data centers
• Motor control centers and drive systems where balanced phase protection is critical
• Upgrading or replacing aging protection devices in existing Eaton installations

Practical tips

For optimal performance, ensure the circuit breaker is appropriate for the voltage class and that the panel bus and mounting hardware match the Eaton HFD3100S specifications. When sizing for a project, consider not only the continuous load but also potential startup surges from motors or drives, and plan for a margin above the nominal 100 A rating to accommodate temporary overloads. Always follow local electrical codes and consult a qualified electrician for installation and commissioning.