Eaton HFDE310021 Circuit Breaker, 100A, 3-Pole, 240V

Meet the Eaton HFDE310021 Circuit Breaker — a rugged, industrial-grade protective device designed for demanding electrical environments.

Key specifications

• Amperage: 100 A
• Poles: 3-pole (three-phase protection)
• Voltage: 240 V AC
• Manufacturer/Part: Eaton HFDE310021

Where it shines

This 3-pole breaker is built for industrial electrical service, maintenance, and replacement projects where reliable, multi-phase protection is essential. It’s a dependable choice for panel boards, distribution boards, and motor control centers that rely on stable, coordinated trip protection across all three phases.

Why a 3-pole design matters

In three-phase systems, a 3-pole breaker safeguards every phase simultaneously, promoting balanced protection for motors, pumps, fans, and other heavy equipment. This reduces the risk of phase-to-phase faults triggering unexpected downtime and helps keep critical processes online.

Compatibility and verification

To ensure a perfect fit, confirm the exact part number HFDE310021 matches your equipment and complies with your system’s voltage and trip requirements. Need help matching a part number or confirming compatibility? Message us and we'll help.

Practical installation and use cases

• Ideal for upgrading aging panels or replacing a failed protective device in 3-phase industrial circuits.
• Suitable for feeders feeding motors, conveyors, and large equipment where balanced phase protection is critical.
• Works as part of a preventive maintenance program to minimize unexpected outages and extend equipment life.

What to expect in practice

With the HFDE310021, engineers gain a straightforward, reliable way to safeguard three-phase electrical infrastructure at 240 V. Its 100 A rating aligns with moderate to heavy load requirements while preserving system safety and uptime. By matching the part number to your application, you ensure proper fit, correct trip characteristics, and seamless integration into your existing breaker family.