Siemens HGB3B020B - 20 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Protect and manage electrical power safely with the Siemens HGB3B020B — a 20A, 600V, 3-pole bolt-on molded case circuit breaker designed for dependable branch-circuit protection in panelboards and load centers. Built to withstand vibration and deliver consistent protection, this unit is a reliable choice for residential, commercial, and light industrial applications.

Why this breaker stands out

• Secure bolt-on mounting: Provides a rigid, vibration-resistant bus connection that stays secure in demanding environments.
• Thermal-magnetic trip unit: Delivers stable, repeatable protection for both overloads and short circuits, reducing nuisance trips and preserving downstream equipment.
• 3-pole design: Ideal for 3-phase systems, delivering coordinated protection across all conductors.
• OEM compatibility: Designed to be compatible with matching Siemens OEM load centers and panelboards for seamless replacement and upgrades.
• Versatile applications: Suitable for residential, commercial, and light industrial power distribution where reliable overcurrent protection is essential.

Technical snapshot

• Manufacturer: Siemens
• Part Number: HGB3B020B
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 20A
• Voltage Rating: 600V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Best-fit scenarios

• Installing or upgrading panelboards and load centers in commercial spaces where dependable 3-phase protection is required.
• Replacing older breakers in Siemens-compatible equipment to restore reliable trip performance and maintain electrical codes.
• Protecting lighting systems, small motors, and other branch circuits in light industrial settings with a robust, vibration-tolerant mount.

Practical considerations and tips

When selecting a breaker for a deployment, ensure your panelboard is compatible with Siemens HGB series bolt-on units and that the 3-pole configuration aligns with your system's phase arrangement. The bolt-on design simplifies field installation in compatible enclosures while delivering a durable bus connection that stands up to routine vibrations found in service entrances, mechanical rooms, and electrical rooms.

For reliable Siemens protection where space, performance, and durable mounting matter, the HGB3B020B provides a precise balance of protection and practicality. Add this 20A, 600V, 3-pole bolt-on breaker to your distribution setup to safeguard circuits and keep power running smoothly.