Eaton 503B027H08 125A 3-Pole 600 V Circuit Breaker

Meet essential 3‑phase protection with the Eaton 503B027H08 125A 3‑Pole 600 V Circuit Breaker. Engineered for reliability in commercial and light industrial settings, this part delivers dependable overcurrent protection for three‑phase circuits, helping safeguard conductors, motors, and control equipment from overloads and faults.

Key specifications

• Part number: 503B027H08
• Current rating: 125 A
• Poles: 3
• Voltage rating: 600 V

Applications and use cases

• Protects three‑phase equipment in commercial electrical panels, motor control centers, and industrial distribution boards
• Ideal for feeders and branch circuits in systems operating up to 600 V
• Suitable for retrofits or new installations where 125 A 3‑pole protection is required

Why this Eaton breaker stands out

Designed to integrate seamlessly with Eaton‑equipped electrical systems, the 503B027H08 delivers clean, reliable interruption when fault conditions occur. Its 3‑pole configuration ensures synchronized protection across all three phases, helping to maintain system stability and reduce the risk of unbalanced loads.

What you gain with this model

• Precise 125 A protection for mid‑sized 3‑phase circuits, reducing equipment wear and downtime
• Broad compatibility with standard 3‑pole, 600 V installations in both retrofit and new builds
• Clear part identification with the exact specification set (503B027H08) for easy ordering and maintenance

Installation and considerations

Use in accordance with your panel design and electrical codes to ensure proper coordination with upstream protection devices. Verify that the surrounding gear and wiring are rated for 125 A and 600 V to maintain optimal protection and performance.