Siemens B320 - 20A, 3-Pole, Circuit Breaker

The Siemens B320 is a purpose-built 20A, 3-pole circuit breaker engineered for reliable three-phase protection in demanding electrical environments. Designed for industrial, commercial, and OEM applications, this unit integrates seamlessly into panelboards, switchboards, and motor control centers where dependable overcurrent protection is critical for safe, continuous operation.

Key reasons to choose the Siemens B320 for your distribution and control needs:

• Three-pole configuration for true three-phase protection: Consolidates protection for all three conductors in a single device, streamlining wiring and coordination in 3‑phase systems.
• 20A current rating: Provides precise overcurrent protection at the branch level, helping safeguard equipment while minimizing unnecessary trips.
• Versatile mounting in panelboards, switchboards, and control panels: A flexible solution for distribution panels, motor control centers, and modular control architectures.
• Robust, dependable performance for harsh environments: Built to withstand industrial settings, delivering consistent operation over time.
• OEM-friendly and scalable: Integrates into Siemens-based ecosystems and supports standardized protection across multiple machines and lines.

Practical use cases include protecting motors and drives in manufacturing lines, safeguarding power distribution in equipment rooms, and providing modular protection during new builds or retrofits of control centers. The B320’s compact form factor and straightforward installation make it easy for electricians to deploy in existing or new Siemens-based setups, helping you maintain reliable power distribution with minimal downtime.

For optimal performance, pairing this breaker with compatible Siemens panelboards and motor control centers ensures consistent protection across your electrical infrastructure. The Siemens B320 20A 3-Pole circuit breaker is a focused, reliable solution when you need solid three-phase overcurrent protection that scales with your operation.