Siemens E43-B080 Circuit Breaker, 80A, 3-Pole, 480V

Siemens E43-B080 Circuit Breaker delivers dependable protection for three-phase, 480V industrial power systems. This 80 A, 3-pole unit is purpose-built for industrial electrical service, maintenance, and replacement projects. As part of the Case Breaker E4 series, it provides a reliable, drop-in solution for compatible panels—just verify fit with the exact part number: E43-B080.

Why choose the E43-B080 for your panel

• Three-pole design delivers balanced protection for three-phase distribution, safeguarding motors, feeders, and MCC inputs.
• 80 A rating targets medium-to-high load circuits common in industrial settings.
• 480V operation supports typical industrial equipment such as motors, pumps, conveyors, and control feeders.
• Case Breaker E4 series compatibility aligns with existing E4 panels and accessories for straightforward substitution.
• Part-number-driven fit precise compatibility is confirmed by using the exact model: E43-B080.

Ideal use cases

• Replacement in established E4-series control panels and distribution panels.
• Upgrades or servicing of industrial electrical gear in manufacturing lines, HVAC systems, and packaging machinery.
• Motor control center feeders and three-phase power feeds that require reliable overcurrent protection.

Compatibility and practical installation tips

• Always verify compatibility by part number: E43-B080 should match your panel model and application requirements.
• Confirm three-phase 480V service and the 3-pole configuration before installation.
• Ensure the breaker is used within the Case Breaker E4 series ecosystem and paired with appropriate bus connections and enclosure specs.
• Follow electrical codes and manufacturer guidelines, and engage a licensed electrician to perform installation or replacement tasks.

Designed for professionals who manage industrial power systems, the Siemens E43-B080 offers precise, reliable protection where it matters most. If you’re maintaining or upgrading an E4-series installation, this 80 A, 3-pole, 480V circuit breaker is built to integrate smoothly, provide robust fault protection, and keep your equipment running with minimal downtime.