Siemens ED43B080 - 80 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Siemens ED43B080 is a rugged 3-pole bolt-on molded case circuit breaker rated at 80A and 480V, engineered to guard branch circuits in panelboards and loadcenters against overcurrent and short-circuit events. Built for dependable performance in busy electrical environments, it integrates smoothly where Siemens OEM panelboards are used.

• Bolt-on mounting for a rigid, vibration-resistant bus connection: The secure bolt-on design stays tight under equipment vibration, helping maintain consistent protection and reducing the risk of loose connections.
• Thermal-magnetic trip unit: Delivers stable, repeatable protection by combining thermal overload detection with magnetic instantaneous trip for short circuits, ensuring fast, predictable responses.
• OEM-compatible compatibility: Designed to pair with matching Siemens panelboards and load centers, providing clean integration without the need for adapters or mismatched components.
• Three-pole, 480V rating: Suitable for three-phase distribution in commercial and light industrial applications, supporting efficient power management in modern facilities.
• 80A protection: Precisely limits current to safeguard branch circuits and connected equipment, helping to minimize downtime and maintenance costs.

Who should consider this breaker? electricians and facilities engineers upgrading or installing Siemens-based panel systems in commercial spaces, light industrial environments, or residential-commercial hybrids where 480V three-phase service is present. It’s particularly well-suited for protecting motor loads, control panels, and distribution circuits that require reliable, consistent response to overcurrent conditions.

• New installations in panelboards designed for Siemens ED-series devices
• Retrofits in existing Siemens environments where compatibility and vibration resistance matter
• Applications demanding robust 480V three-phase protection with a proven, maintenance-friendly design

Specifications at a glance

• Manufacturer: Siemens
• Part Number: ED43B080
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 80A
• Voltage Rating: 480V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

For reliable, OEM-aligned protection in panelboards and loadcenters, the Siemens ED43B080 delivers dependable performance, precise trip behavior, and a installation-ready design that keeps electrical systems running smoothly in demanding environments.