Siemens BG320 - 20 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens BG320: a 20-amp, 240-volt, 3-pole bolt-on molded case circuit breaker designed to safeguard branch circuits in panelboards and load centers. Engineered for reliability in demanding environments, it combines ultra-secure mounting with precise, responsive protection, making it a dependable choice for residential, commercial, and light industrial installations.

• Secure bolt-on mounting: a rigid, vibration-resistant bus connection that stays aligned and tight, reducing movement and potential loose contacts in active panels.
• Thermal-magnetic trip unit: delivers stable, repeatable protection by quickly responding to overloads and short circuits, helping minimize damage and downtime.
• OEM-ready compatibility: designed to pair with matching Siemens load centers and panelboards, simplifying installation and ensuring a dependable fit.
• Versatile protection: ideal for branch circuit overcurrent and short-circuit protection across a range of panel configurations.
• Ideal for a variety of settings: suitable for residential upgrades, commercial applications, and light industrial environments where reliable protection is essential.

Why choose the Siemens BG320 for your panel?

The BG320 stands out by delivering a robust, bolt-on solution that stays secure in vibration-prone spaces, while its thermal-magnetic trip unit provides fast, predictable responses to faults. This combination minimizes nuisance trips and enhances system reliability, making it a preferred choice when panel integrity and long-term performance matter most.

Technical specifications

• Manufacturer: Siemens
• Part Number: BG320
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 20A
• Voltage Rating: 240V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Use cases and installation scenarios

• Installing in Siemens panelboards and load centers where secure, vibration-resistant connections are a priority—such as utility rooms, basements, service rooms, and commercial equipment closets.
• Replacing aging or damaged breakers in existing panels that require 3-pole, 20A protection without sacrificing mounting reliability.
• Protecting multi-circuit or multi-phase distributions in light commercial or small industrial installations where dependable tripping behavior is essential.
• Creating a cohesive protection strategy with OEM-compatible components to minimize compatibility issues and simplify future servicing.

Choose the Siemens BG320 for a bolt-on MCCB solution that delivers durable mounting, precise thermal-magnetic protection, and straightforward integration with Siemens panel systems. It’s a purpose-built choice for dependable electrical protection where it counts.