Siemens HDX3B100 - 100A, 3-Pole, Circuit Breaker

The Siemens HDX3B100 is a rugged 100 A, 3-pole circuit breaker built to deliver reliable overcurrent protection in demanding electrical environments. With a three-pole configuration, it seamlessly supports three-phase power in panelboards, switchboards, and control panels, helping you safeguard equipment, personnel, and processes.

• Three-pole, three-phase protection: Ensures balanced interruption across all phases, reducing the risk of uneven fault currents in industrial and commercial installations.
• 100 A rating: Scales to protect feeders, motors, and distribution circuits without overcalling or undertripping in everyday operations.
• Durable, installation-friendly design: Engineered for reliable performance in motor control centers and distribution panels, with straightforward mounting and electrical connection.
• Seamless integration with Siemens protection ecosystem: Designed to coordinate with other HDX-series devices and protection components for streamlined commissioning and maintenance.
• Versatile for OEM and retrofit projects: A dependable choice for OEM equipment, panel upgrades, or new builds that require robust, space-efficient overcurrent protection.

Ideal for:

• Industrial motor control centers and process lines that demand consistent, fast fault interruption
• Commercial and institutional distribution panels where dependable three-phase protection is essential
• OEM applications needing a trusted, drop-in compatible 100 A, 3-pole breaker

Why this matters in real terms: with the HDX3B100, you get a proven, ready-to-install protection device that minimizes downtime by reliably tripping on overcurrent events, protecting cables, transformers, and downstream loads, while simplifying panel design and maintenance in three-phase systems.