Siemens | EH3A003 | Circuit Breaker | 3A | 3-Pole | 480V

The Siemens EH3A003 Circuit Breaker is a precision three-pole protection device engineered for 480V three‑phase systems. With a compact 3A rating, it provides targeted overcurrent protection for control circuits, small motors, and other demanding loads in industrial panels, retrofit projects, or maintenance scenarios. Designed to align with Siemens' robust standards, this breaker offers reliable performance in environments where exact part compatibility matters.

• Amperage: 3 A
• Poles: 3-Pole
• Voltage: 480 V
• Part Number: EH3A003

Compatibility and fit are critical for dependable protection. Confirm the breaker’s fit and ratings against your equipment and panel labeling before ordering. The part number EH3A003 serves as the best reference for compatibility and replacement accuracy.

Ideal applications and use cases

• Maintenance and retrofit of industrial control panels that rely on Siemens breakers with a 3A, 3‑pole, 480V specification.
• Replacement in systems where precise three‑phase protection is required for small-motor drives, conveyors, or auxiliary loads in manufacturing environments.
• Spare part for service programs in facilities that standardize on Siemens components to simplify inspection and future replacements.

Why choose the EH3A003 in practice? It’s purpose-built for scenarios where you need exact spec matching to avoid compatibility issues and ensure predictable tripping behavior in a 480V, three‑phase distribution. By sticking with the original part reference, you minimize downtime and simplify ordering, stocking, and cross-reference in your maintenance workflow.

Practical tips for installers: verify panel model and labeling to ensure Siemens EH3A003 is the correct form factor and trip characteristics for your distribution scheme; keep the exact part number accessible in your spare parts inventory; and document replacement dates as part of your preventive maintenance plan.