Siemens HHFXD63B080L - 80 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Siemens HHFXD63B080L is a robust 80 A, 600 V, 3-pole bolt-on molded case circuit breaker designed to deliver dependable overcurrent and short-circuit protection for panelboards and load centers. Engineered for demanding electrical environments, this unit combines secure installation with precise protection, helping systems stay safe and operational.

Why this breaker stands out

• Secure bolt-on mounting ensures a rigid, vibration-resistant bus connection, reducing movement during operation and improving reliability in busy electrical environments.
• Thermal-magnetic trip unit offers stable, repeatable protection by responding to both overload (thermal) and short-circuit (magnetic) conditions, minimizing nuisance trips while preserving circuit safety.
• OEM-compatible design is engineered to fit matching Siemens OEM load centers and panelboards, providing seamless integration with existing installations.
• Three-pole configuration provides coordinated protection for three-phase systems, making it suitable for commercial and light industrial applications as well as certain residential setups requiring three-phase feeders.
• Wide applicability supports branch circuit protection in a range of environments—from small offices and retail spaces to mechanical rooms and equipment closets.

Technical snapshot

• Manufacturer: Siemens
• Part Number: HHFXD63B080L
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 80 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Applications: Branch circuit overcurrent and short-circuit protection

Ideal use cases

Designed for installations where reliable 3-phase protection is essential, the HHFXD63B080L is a solid choice for:

• Residential projects with three-phase panel configurations or specific feeders requiring robust protection
• Commercial electrical rooms distributing multiple branch circuits across panelboards
• Light industrial applications where vibration resistance and secure bus connections matter

What problems does it solve?

• Prevents damage from overcurrent and short circuits by interrupting fault currents quickly and predictably.
• Reduces maintenance downtime with a durable bolt-on connection that resists loosening from vibration or routine operation.
• Ensures compatibility and smooth replacement in Siemens-based systems, preserving panelboard integrity and warranty expectations.

Practical guidance for installation and care

Review panelboard ratings to confirm compatibility with a 600 V, 3-pole bolt-on device. Use in panels and load centers designed for Siemens HHFXD-series breakers to maintain optimal performance. Keep spares on hand for rapid replacements in service panels to minimize downtime during electrical maintenance or upgrades.

Whether you’re an electrical contractor stocking for a commercial retrofit or a facilities manager upgrading panel protection, the Siemens HHFXD63B080L delivers precise, reliable protection where you need it most. AmpState makes it easy to secure genuine Siemens components that align with your project’s specs and compliance needs.