Siemens | HE3A100 | Circuit Breaker | 3-Pole

Introducing the Siemens HE3A100 Circuit Breaker, a precise 3-pole solution engineered for reliability in 3-phase electrical systems. Designed for maintenance, retrofit, and replacement projects where matching specs is essential, this unit keeps your Siemens panel protected while minimizing downtime.

• 3-Pole design provides robust three-phase protection in compatible Siemens panel configurations.
• Exact reference part number HE3A100 ensures you’re choosing a true replacement with the correct frame and trip characteristics.
• Versatile application ideal for routine maintenance, panel retrofits, or replacing a worn-out breaker in service entrances, commercial controls, or industrial distribution.
• Match-before-order confirm fit and ratings against your panel label or Siemens catalog before purchasing to avoid incompatibility.

Use cases and practical notes:

• Replacing a failed 3-pole breaker in a Siemens system without altering other protective devices.
• Retrofits where a 3-phase circuit needs reliable protection and quick swap-in performance.
• Maintenance cycles where having an exact HE3A100 replacement reduces complexity and testing time.

How to verify compatibility

To ensure the HE3A100 will integrate seamlessly, reference your equipment’s documentation and the panel’s approved devices list. Verify the following before ordering:

• Panel compatibility with 3-Pole breakers of the Siemens HE series
• Amperage rating and trip curve required for your circuit
• The physical fit, frame type, and mounting style that matches your panel

Choosing the Siemens HE3A100 means selecting a purpose-built, Siemens-manufactured solution designed for consistent performance in demanding electrical environments. If you’re planning a retrofit, maintenance, or replacement, this 3-pole breaker helps you restore reliable protection quickly and with confidence.