Eaton | HFA31550M | Circuit Breaker | 100A | 3-Pole | 600V | Bolt-On

Meet the Eaton HFA31550M, a purpose-built circuit breaker engineered for demanding electrical systems. This 100 A, 3-pole, 600 V bolt-on model delivers dependable protection and a robust mounting solution for retrofit, maintenance, and replacement projects where exact specifications matter.

Key specifications at a glance

• Amperage: 100 A
• Poles: 3-Pole
• Voltage: 600 V
• Mounting: Bolt-On
• Part number: HFA31550M

Why the bolt-on design matters

The bolt-on format provides a secure, vibration-resistant connection that stays put in challenging environments. It’s particularly well-suited for service panels, industrial control gear, and retrofit projects where a rigid, field-verified fit is essential for long-term reliability.

Ideal use cases

• Maintenance upgrades on existing 3‑pole, 600 V systems that require the same form factor
• Retrofits and replacements in industrial facilities, manufacturing lines, and data centers
• New installations where a proven 3‑pole, 600 V, 100 A bolt-on breaker is required for distribution panels

Fit, compatibility, and what to verify before ordering

To ensure seamless replacement, use the part number HFA31550M as your primary compatibility reference. Confirm fit and ratings before ordering to guarantee the breaker matches your panel hardware and voltage requirements.

Practical considerations and expert tips

• Match the breaker's amperage and pole configuration to your existing panel schedule to avoid nuisance trips or nuisance fit issues.
• Plan for secure torque during installation to maintain reliable electrical contact and withstand vibration in demanding environments.
• Use only with compatible Eaton panel architectures designed for bolt-on protection devices to maximize performance and longevity.
• Document the replacement with the exact part number for future maintenance and audits.

Designed for reliability in real-world applications, the Eaton HFA31550M is a precise match for projects that demand a trusted, OEM-grade breaker with a clear specification match: 100 A, 3-Pole, 600 V, Bolt-On.