Siemens | E43A003 | Circuit Breaker | 3-Pole | 480V | Bolt-On

Meet the Siemens E43A003 Circuit Breaker — a rugged, 3-pole protection device designed for 480-volt, three-phase power. With a bolt-on mounting configuration, it offers secure, field-ready installation that stands up to demanding industrial environments where reliable shutdowns and quick maintenance are essential.

This breaker is purpose-built for maintenance, retrofit, and replacement projects. When updating electrical infrastructure or expanding a 3-phase system, the E43A003 provides the robust overcurrent protection you need without the hassle of incompatible components. Its bolt-on design simplifies installation in compatible Siemens panels and enclosures, helping you minimize downtime during upgrades or service calls.

Ideal use cases

• Maintenance swaps in existing Siemens panel arrays where 480V three-phase protection is required
• Retrofits that upgrade older systems to modern, bolt-on 3-pole protection for 480V distribution
• Replacement deployments in industrial environments like manufacturing floors, processing plants, and large commercial facilities

Important compatibility note

Confirm fit and ratings before ordering. The part number E43A003 is the best reference for ensuring you match the exact specifications and mounting arrangement for your panel or enclosure.

Specifications

• Poles: 3-Pole
• Voltage: 480V
• Mounting: Bolt-On
• Part Number: E43A003

Choosing the Siemens E43A003 means opting for a proven, industry-standard solution built to safeguard three-phase circuits at 480V. Its bolt-on form factor supports straightforward installation, reduces service time, and delivers dependable protection when you need to keep critical equipment online and safe. If your system requires a precise Siemens 3-pole, 480V bolt-on breaker, this part provides the exact reference point for compatibility and performance.