Siemens HED43B020 20A 3P 480V Circuit Breaker | AmpState

Meet the Siemens HED43B020 20A 3P 480V Circuit Breaker—precision protection for your most demanding electrical distribution setups. This Siemens-manufactured device is designed to safeguard panelboards, load centers, and electrical distribution networks with reliable, three-phase isolation at elevated voltages.

Why this breaker stands out for procurement teams and site engineers: it’s a direct-part-number solution. When inventory accuracy matters, having the exact HED43B020 ensures compatibility with existing panels and reduces the risk of fit or trip-curve mismatches during maintenance or upgrades. AmpState currently stocks this part, making it a dependable option for quick replacements or spare inventories.

• Manufacturer: Siemens
• Part Number: HED43B020
• Product Type: Circuit Breaker
• Amperage: 20 A
• Poles: 3
• Voltage: 480V

Key advantages in real-world use

• Direct part-number fit for Siemens panelboards and load centers, streamlining maintenance and part replacement.
• Precise 20 A protection for three-phase circuits, ideal for distributing balanced loads in industrial applications.
• Suitable for high-voltage distribution environments where 480V three-phase systems are standard.
• Efficient inventory planning with AmpState availability, reducing downtime when a spare is needed.

Ideal use cases

• Maintenance and downtime planning for manufacturing floors relying on three-phase 480V distribution.
• Panel building projects requiring exact Siemens components to ensure seamless compatibility with existing gear.
• Spare inventory for facilities that prioritize quick, confirmed-part replacements to minimize disruption.

Compatibility and support

If you need help confirming fit or verifying a part-number match, our team can assist. Message us to confirm compatibility and ensure this exact Siemens HED43B020 is the right choice for your panel, load center, or distribution layout.

Secure the precise protection your electrical system demands with the Siemens HED43B020 20A 3P 480V Circuit Breaker—available from AmpState for reliable sourcing and accurate part matching.