Siemens B350H - 50 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Introducing the Siemens B350H—50A, 240V, 3-pole bolt-on molded case circuit breaker designed to deliver dependable protection in panelboards and loadcenters. Built for environments that demand reliability, this unit combines a secure mounting with precise protection curves to keep electrical systems safe and running smoothly.

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection, reducing loosening risk in panels exposed to equipment vibration or busy electrical rooms.
• Thermal-magnetic trip unit delivers stable, repeatable protection for both overloads and short circuits, maintaining predictable responses across temperature variations.
• Three-pole configuration (3P) designed for balanced three-phase systems, ideal for commercial and light industrial applications that rely on clean, coordinated protection across all phases.
• 50A at 240V rating targets branch circuit protection for moderate-to-heavy loads while preserving panelboard compatibility and safe operation.
• OEM-compatible with matching Siemens OEM loadcenters and panelboards, helping ensure proper fit, alignment, and trip characteristics without compromising performance.
• Durable molded-case construction optimized for long service life in residential, commercial, and light industrial settings, with straightforward maintenance and replacement in the field.

Why choose the Siemens B350H for your panel protection

If you’re upgrading or expanding a panel, the B350H offers a combination of rugged mounting, reliable trip behavior, and seamless compatibility with Siemens load centers. The bolt-on design minimizes connection issues and vibration-related wear, while the thermal-magnetic trip unit provides a clear, coordinated response to both overloads and short circuits. This means less nuisance tripping, better protection alignment with downstream devices, and a safer, more maintainable electrical distribution setup.

Ideal use cases

Perfect for residential service panels, commercial electrical rooms, and light industrial equipment racks where a dependable 3-pole breaker is needed to protect three-phase circuits. Use cases include HVAC equipment feeders, three-phase lighting and power systems, and other branch circuits requiring solid protection and straightforward installation in compatible Siemens panels.

Technical specifications at a glance

• Manufacturer: Siemens
• Part Number: B350H
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 50A
• Voltage Rating: 240V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Choose the Siemens B350H when you need proven performance, robust mounting, and seamless compatibility with Siemens panel systems. It’s built to protect your three-phase loads with clarity and reliability, reducing downtime and simplifying panel maintenance.