Siemens | EH3A100 | Circuit Breaker | 3-Pole | 480V

The Siemens EH3A100 circuit breaker is a purpose-built solution for 3-phase electrical systems, designed to protect 480V circuits with reliable performance. This 3-pole device is ideal for maintenance, retrofit, and replacement projects where exact specifications must match existing equipment.

• Poles: 3-Pole
• Voltage rating: 480V
• Part number reference: EH3A100

Why choose the Siemens EH3A100? This OEM component from Siemens is crafted for robust protection of 3-phase feeders in commercial and industrial environments. By aligning with the EH3A100 specification, you ensure seamless compatibility within control panels, distribution boards, and motor-related circuits that operate at 480V.

Ideal use cases

• Maintenance projects where a direct 3-pole, 480V replacement is required
• Retrofit upgrades to restore or expand existing 3-phase protection
• Replacement of worn or obsolete breakers in 480V electrical panels
• New installations that demand a Siemens-certified 3-pole solution for 480V systems

What problems does it solve? By providing a precise 3-pole, 480V protection device, the EH3A100 helps maintain system integrity, reduce downtime from mismatched breakers, and simplify future service by relying on a familiar Siemens part reference.

Compatibility and ordering guidance

Before ordering, confirm fit and ratings against your panel documentation. The EH3A100 part number is the most reliable reference for compatibility, ensuring the breaker matches the current enclosure, mounting footprint, and trip characteristics of your 3-phase 480V system.

Practical tips for buyers

• Cross-check the original breaker’s part number on your panel label or inside the enclosure door to verify exact match.
• Prepare to replace associated accessories or mounting hardware if they are specific to the older unit.
• Store replacement breakers in a clean, dry environment to preserve connector integrity and performance.

For professionals safeguarding 480V three-phase lines, the Siemens EH3A100 3-Pole circuit breaker offers a straightforward, reliable path to maintenance, retrofit, and replacement projects—ensuring continued system protection with a trusted, industry-standard component.