Siemens B330H - 30 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Siemens B330H is a 3-pole, 30A, 240V bolt-on molded case circuit breaker designed to deliver dependable branch-circuit protection for panelboards and load centers. Built to stay put where it matters, this unit combines rugged mounting with precise protection to keep electrical systems running smoothly. Why this breaker stands out

• Secure bolt-on mounting: A rigid, vibration-resistant bus connection minimizes movement and loosening over time, helping maintain consistent electrical contact even in demanding environments.
• Thermal-magnetic trip unit: The combination of thermal and magnetic protection provides stable, repeatable performance, automatically responding to overloads and short circuits to prevent damage and downtime.
• OEM-compatible: Designed to be used with matching Siemens OEM load centers and panelboards, ensuring reliable fit, form, and function across your installation.
• Versatile application: Ideal for residential, commercial, and light industrial settings where 3-pole, 240V protection is required.

The B330H’s trip system is engineered for real-world reliability. The thermal element handles gradual overloads with controlled, predictable responses, while the magnetic element kicks in quickly during high-energy short circuits. The result is a protection profile you can trust—minimizing nuisance trips while safeguarding wiring, devices, and connected equipment.

Perfect use cases

• Installing or upgrading panelboards in small to mid-sized commercial spaces where 3-phase circuits are common
• Replacing aging breakers in compatible Siemens load centers to restore robust overcurrent protection
• Feeding critical 240V circuits in light industrial applications without sacrificing compatibility or performance

Key specifications

• Manufacturer: Siemens
• Part Number: B330H
• 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

When you choose the Siemens B330H, you’re selecting a dependable, OEM-compatible solution that aligns with your panelboard and load center architecture. It’s a practical, durable choice for safeguarding circuits in environments where vibration, load demand, and reliability all matter. Order with confidence from AmpState and keep your electrical system protected with a breaker that’s built to perform under real-world conditions.