Siemens HGB2B070B - 80 A, 600 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens HGB2B070B — a robust 80A, 600V, 2-pole bolt-on molded-case circuit breaker designed for dependable branch-circuit protection in panelboards and load centers. Built to handle the rigors of residential, commercial, and light industrial installations, this unit delivers consistent protection where it matters most.

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection that stays tight through equipment start-ups and everyday operation, reducing the risk of loose connections over time.
• Thermal-magnetic trip unit delivers stable, repeatable protection against overcurrent and short-circuit events, balancing fast response with reliable performance under varying loads and temperatures.
• OEM-compatible design is built to pair with matching Siemens OEM load centers and panelboards, ensuring a smooth replacement or upgrade path without compatibility surprises.
• Diverse, practical applications ideal for residential service panels, light commercial distribution, and small-scale industrial panels where 80A protection is required.

Use cases and real-world scenarios

Use the HGB2B070B when you need a dependable 80-amp two-pole breaker for a high-demand feeder or subpanel. It’s a solid choice for replacing a worn or failing breaker in Siemens-compatible panels, adding a dedicated circuit for large appliances, HVAC equipment, or industrial controls, and upgrading protection in mixed-use installations where panel space and reliability matter.

Specifications at a glance

• Manufacturer: Siemens
• Part Number: HGB2B070B
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 80A
• Voltage Rating: 600V
• Number of Poles: 2
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Why this matters

Choosing a bolt-on, 2-pole design with a thermal-magnetic trip unit means you’re investing in a solution that stays secure in environments with vibration or movement, while delivering predictable protection. The HGB2B070B is designed to fit seamlessly within Siemens and compatible panelboards, offering a clear upgrade path and consistent performance across residential, commercial, and light industrial applications.

Installation and care tips

• Confirm panelboard compatibility with the OEM load centers before installation.
• Ensure bus connections are clean and seats fully into the mounting terminal to maximize the benefits of the bolt-on design.
• Follow the panel manufacturer’s torque specifications and safety procedures during installation for optimal performance and safety.
• Regularly inspect the breaker after initial commissioning to verify secure mounting and absence of signs of wear or overheating.