Siemens B330 - 30 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Engineered for reliable protection in panelboards and load centers, the Siemens B330 is a 30-amp, 240-volt, 3-pole bolt-on molded case circuit breaker designed to guard branch circuits against overcurrent and short circuits. Built to endure the rigors of commercial and industrial environments while remaining a solid choice for residential upgrades, this device pairs precise protection with straightforward installation.

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection that stays aligned and reduces wear over time.
• Thermal-magnetic trip unit delivers stable, repeatable protection by responding to both sustained overloads and short-circuit events with a compact, integrated mechanism.
• OEM compatibility is designed to work with matching Siemens load centers and panelboards for seamless replacement and maintenance.
• Versatile applications suited for residential, commercial, and light industrial electrical systems requiring dependable 30A protection.

• Technical snapshot
  • Manufacturer: Siemens
  • Part Number: B330
  • Type: Thermal-magnetic molded case circuit breaker
  • Amperage Rating: 30A
  • Voltage Rating: 240V
  • Number of Poles: 3
  • Mounting Style: Bolt-on
  • Application: Branch circuit overcurrent and short-circuit protection

Use cases you’ll appreciate: restore or upgrade a residential panelboard with a reliable 30A protection point, outfit a small commercial load center feeding 240V equipment, or retrofit a light industrial distribution circuit where vibration resistance and durable connections matter. The B330’s bolt-on design simplifies installation in compatible Siemens panels, while its robust thermal-magnetic protection helps prevent nuisance trips and ensures consistent performance across varying load conditions.

In short, the Siemens B330 30A, 240V, 3-pole bolt-on circuit breaker is a purpose-built solution for reliable branch circuit protection in a range of settings. It combines a secure mounting method, precise trip technology, and OEM-friendly compatibility to deliver dependable protection you can trust day after day.