Siemens HGB2B080B - 80 A, 600 V, 2-Pole Bolt-On Circuit Breaker | AmpState

The Siemens HGB2B080B is a rugged, 80-amp, 600-volt, 2-pole bolt-on molded case circuit breaker designed to safeguard your electrical panelboards and load centers. Built to endure demanding environments, this unit delivers dependable branch circuit overcurrent and short-circuit protection with consistent performance you can trust.

• Secure bolt-on mounting for a rigid, vibration-resistant bus connection that stays put through regular operation and equipment start-ups.
• Thermal-magnetic trip unit combines thermal protection for gradual overloads with instantaneous magnetic trips for short circuits, delivering stable, repeatable protection across varying loads.
• 2-pole design ensures simultaneous protection of both conductors with a common trip, simplifying protection coordination in multi-wire circuits.
• 80A, 600V rating makes it ideal for feeders to subpanels, branch circuits, and equipment loads in residential, commercial, and light industrial settings.
• Molded-case durability provides solid insulation and long-term reliability in electrical panels, reducing nuisance trips caused by environmental factors.
• OEM compatibility is built to work with matching Siemens OEM load centers and panelboards, helping you maintain proper fit, wiring topology, and electrical performance.

Why choose the Siemens HGB2B080B?

When upgrading or maintaining panelboard systems, you need a breaker that not only protects circuits but also resists the wear and vibration common in busy electrical rooms. The HGB2B080B addresses this with a bolt-on mounting approach that creates a solid bus connection, minimizing loosening over time. Its thermal-magnetic trip unit delivers predictable, fast responses to surges and overloads, reducing the risk of equipment damage and service interruptions.

Ideal use cases

• Replacing worn or damaged breakers in Siemens-based panelboards and load centers.
• Feeding branch circuits or subpanels in residential homes with reliable, code-compliant protection.
• Light commercial or light industrial installations where 80A protection and 600V operation are required.
• Situations demanding a rugged, vibration-resistant connection in panels located in manufacturing floors or service areas.

Practical considerations

Before installation, verify that your panelboard model is compatible with the HGB2B family, and ensure correct bolt-on mounting hardware is used for a secure, code-compliant fit. This breaker is designed for branch circuit overcurrent and short-circuit protection, so align its 80A rating with your circuit loads and conductor sizes to maintain proper protection coordination.

Maintenance and care

Periodically inspect for signs of overheating, corrosion, or loose mounting screws. Keep the breaker and surrounding area clean and dry to preserve the integrity of the molded-case insulation and the stability of the bus connection. If any deformation or discoloration appears, consult a licensed electrician before re-energizing the system.

With the Siemens HGB2B080B, you’re choosing a purpose-built, reliable solution for protecting critical electrical infrastructure in panelboards and load centers. Its combination of secure bolt-on mounting, stable thermal-magnetic protection, and OEM-ready compatibility makes it a concrete, long-term choice for residential, commercial, and light industrial applications.