Siemens HGB2B100B - 100 A, 600 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Siemens HGB2B100B is a robust 100 A, 600 V, 2-pole bolt-on molded case circuit breaker engineered for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built to endure the demands of residential, commercial, and light industrial environments, this unit integrates seamlessly into Siemens panel ecosystems while delivering precise protection when it matters most.

Secure mounting for a reliable bus connection

With secure bolt-on mounting, the HGB2B100B delivers a rigid, vibration-resistant connection to the bus. This design minimizes loosening in panels subjected to door operation, motor starts, or equipment vibration, helping maintain consistent electrical performance over time.

Thermal-magnetic protection you can trust

The built-in thermal-magnetic trip unit provides stable, repeatable protection. The thermal element responds to gradual temperature rise from overloads, while the magnetic element reacts swiftly to short-circuit events, reducing the risk of damage to downstream equipment and wiring and helping you meet safety and code expectations.

Designed for Siemens panel centers and versatile applications

Specifically compatible with matching OEM load centers and panelboards, the HGB2B100B is ideal for panel upgrades, service panel expansions, and new installations where reliable, compatible protection is essential. Whether you’re servicing a home electrical panel, a commercial distribution board, or a light industrial distribution point, this breaker fits the workflow and hardware you already rely on.

Key specifications at a glance

• Manufacturer: Siemens
• Part number: HGB2B100B
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 100 A
• Voltage rating: 600 V
• Number of poles: 2
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Use scenarios: replace an aging two-pole breaker in a Siemens panel, add circuits to a service panel in a commercial space, or shield feeders and motors in a light industrial setup. The 100 A rating makes it suitable for main- or sub-feed protection in moderate-load installations while keeping compatibility with Siemens’ panel line for streamlined service and maintenance.

Why this matters: you’re not just selecting a component—you’re choosing predictable protection characteristics, a stable mounting solution, and a seamless fit within an integrated Siemens electrical system. Install with confidence in applications where reliability and compatibility are non-negotiable.