Siemens HED43B050 50A 3P 480V Circuit Breaker, Bolt-On | AmpState

The Siemens HED43B050 50A 3P 480V Bolt-On Circuit Breaker is a purpose-built solution for reliable electrical distribution. Designed for panelboards, load centers, and other distribution environments, this unit provides sturdy, three-phase protection with precise alignment to the original BOM. When you need an exact part replacement or a spare that keeps your project trackable to the Siemens part number, this breaker from AmpState delivers.

Why this bolt-on breaker stands out

• Bolt-On reliability: A solid, secure mount that resists looseness in dynamic electrical environments, helping maintain consistent protection over time.
• Three-pole design: Suitable for three-phase distribution, ensuring balanced protection across all conductors in your system.
• 50 A protection: Appropriately sized for mid-range feeders, motors, and auxiliary circuits common in commercial and light industrial settings.
• 480V capability: Built for higher voltage distribution applications, aligning with many industrial and facility electrical layouts.
• Exact BOM compatibility: Part number HED43B050 keeps your maintenance records and spare stock aligned with the original Siemens specification, reducing guesswork during replacements.
• AmpState availability: Ready to ship with knowledgeable support to confirm fit and compatibility, helping you avoid downtime.

Ideal uses and practical scenarios

• Replacements in panelboards and load centers where the original Siemens part is specified, ensuring consistent trip characteristics and electrical behavior.
• Spare inventory for facilities with three-phase distribution who must maintain exact part-number traceability on BOMs.
• Upgrades or refresh projects in manufacturing floors, data centers, or commercial buildings that rely on dependable three-phase protection at 480V.
• Maintenance routines where downtime minimization is critical and part compatibility needs to be verified quickly with a trusted supplier.

Specifications at a glance

• Manufacturer: Siemens
• Part Number: HED43B050
• Product Type: Circuit Breaker
• Amperage: 50 A
• Poles: 3
• Voltage: 480V
• Mounting: Bolt-On
• Availability: AmpState

If you’re aligning a BOM, performing a replacement, or stocking a spare for future service, the Siemens HED43B050 offers the exact match you need with practical, real-world advantages. Have a question about fit or compatibility? AmpState is ready to help confirm that this bolt-on circuit breaker is the right choice for your panel and project needs.