Siemens ED43B050 50A 3P 480V Circuit Breaker, Bolt-On | AmpState

The Siemens ED43B050 is a purpose-built bolt-on circuit breaker designed to deliver reliable overcurrent protection in 480V three‑phase distribution. With a 50 A rating and three poles, this unit is a precise fit for panelboards, load centers, and other electrical distribution configurations where space and performance matter.

Key specifications at a glance

• Manufacturer: Siemens
• Part number: ED43B050
• Amperage: 50 A
• Poles: 3
• Voltage: 480V
• Mounting type: Bolt-On

Why this specific breaker matters

The ED43B050 is chosen for installations that require exact original equipment compatibility and dependable protection for critical circuits. Its bolt-on design simplifies replacement in existing panelboards and distribution centers, reducing downtime when you’re aligning with the original BOM and part numbers. Ideal for stocking spares on larger installations, it helps maintain consistency across maintenance and upgrades.

Who benefits most

• Facility engineers replacing failed breakers in 480V, 3‑phase systems
• Electrical contractors conducting panelboard upgrades or refurbishments
• OEMs integrating Siemens protection into 3P 480V electrical distributions
• Maintenance teams keeping BOMs aligned to the exact original part number (ED43B050)

Use cases and practical applications

Deploy the Siemens ED43B050 to safeguard feeders and critical circuits in manufacturing lines, data centers, and commercial electrical rooms where precise 50 A, 3‑pole protection at 480V is required. It’s well-suited for projects that demand exact part-number compatibility to preserve warranty coverage and spare-part alignment. When downtime is costly, rely on a known-good Siemens component that matches your original configuration.

Installation and compatibility tips

Ensure your panelboard or load center accepts bolt-on 3P breakers in the ED43 family and that the 480V distribution matches your system requirements. If you’re unsure about fit or compatibility with existing BOMs, AmpState can assist in confirming match to the ED43B050 part number and the intended installation. This proactive step helps you avoid misfits and streamlines procurement.

Why buy from AmpState

AmpState offers the Siemens ED43B050 as a ready-to-ship solution for replacement and spare stocking. With a focus on exact part-number compatibility and practical support, AmpState helps you verify fit and get your project back on track quickly.

Secure the Siemens ED43B050 50A 3P 480V Bolt-On Circuit Breaker today and maintain consistent, reliable protection across your electrical distribution network.