Siemens HED43B080L - 80 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Siemens HED43B080L is a rugged 3-pole bolt-on molded case circuit breaker designed for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. With an 80-ampere rating and a 480-volt capacity, this breaker is built to handle demanding three-phase systems common in commercial and light industrial environments, while still being suitable for select residential applications that require robust protection.

• Secure bolt-on mounting delivers a rigid, vibration-resistant bus connection that helps maintain consistent electrical continuity in panels subjected to equipment movement or vibration.
• Thermal-magnetic trip unit provides stable, repeatable protection by addressing both overload currents and sudden short-circuit events, reducing nuisance trips and improving system reliability.
• 3-pole design enables coordinated protection for three-phase distributions, simplifying installation in 480V panelboards and load centers.
• 480V rated for industrial and commercial power distribution, making it a suitable choice for higher-voltage applications where reliable protection is essential.
• OEM-compatible designed to work with matching Siemens panelboards and load centers, ensuring seamless integration and consistent protection across your distribution system.

Ideal applications and use cases

Use the HED43B080L in three-phase 480V panelboards and load centers where durable, code-compliant protection is required. It’s a practical choice for:

• New installations in commercial spaces such as office buildings, data centers, and retail locations that rely on stable 480V distribution
• Load-center retrofits or upgrades in light industrial settings where vibration or equipment start-stop cycles demand a secure mechanical connection
• Replacement of older or worn-out breakers in Siemens-compatible panelboards to restore reliable overcurrent protection
• Systems that favor a bolt-on mounting approach for easier serviceability and robust bus connections

Technical specifications at a glance

• Manufacturer: Siemens
• Part number: HED43B080L
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 80 A
• Voltage rating: 480 V
• Number of poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Installation and maintenance tips

To maximize performance and longevity, pair the HED43B080L with compatible Siemens panelboards and follow proper bolt-on installation practices. During commissioning, verify the trip characteristics align with system protection requirements and ensure the mounting hardware remains tight to preserve a solid electrical connection. Periodic visual inspections can help detect signs of wear, overheating, or vibration-related issues, allowing for proactive replacement before a fault occurs.