Siemens | ED43B125L | Circuit Breaker | 125A | 3-Pole | 480V

Reliable protection for industrial power distribution starts with the Siemens ED43B125L circuit breaker. With a 125A rating and a 3-pole design, this device is built to interrupt all three phases safely in 480V systems, making it a solid choice for maintenance, retrofit, or replacement projects where exact specs matter.

Key specifications and design advantages

• 125A current rating protects feeders and connected equipment from overloads and fault currents.
• 3-pole configuration ensures simultaneous interruption across all three phases for balanced shutdown and safer protection.
• 480V maximum operating voltage aligns with common 3-phase industrial distributions, data centers, and manufacturing environments.
• Part ED43B125L serves as the best compatibility reference—use it to verify fit with your panel or switchgear.
• Designed for interchangeability in Siemens-compatible panels, helping minimize downtime during replacement or retrofits.
• Clear identification and rugged construction suited for demanding industrial environments.

Ideal use cases

• Retrofit and upgrade projects in manufacturing facilities where reliable 3-phase protection is essential.
• Replacement in service panels and distribution boards within data centers and large commercial buildings.
• Maintenance scenarios where existing Siemens gear requires a precise ED43B125L match for seamless integration.
• New installations that demand a known Siemens specification for consistent performance and compatibility with existing systems.

Compatibility and ordering tips

Before placing an order, confirm fit and ratings using the exact part number ED43B125L. This is the most reliable reference for compatibility with your panel, switchgear, or enclosure. Relying on the part number helps ensure you receive the correct 3-pole, 480V, 125A solution and reduces the risk of mismatches in critical electrical infrastructure.

For dependable, predictable protection in industrial power distribution, the Siemens ED43B125L circuit breaker delivers consistent performance across maintenance, retrofit, and replacement projects.