Siemens | HE3A110 | Circuit Breaker | 110A | 3-Pole | 480V

Siemens HE3A110 Circuit Breaker delivers dependable three-phase protection for demanding industrial environments. This 110A, 3-pole device is designed for use in 480V systems and is ideal for maintenance, retrofit, and replacement projects where precise compatibility matters.

Engineered by Siemens, the HE3A110 offers robust performance in distribution panels, motor control centers, and service equipment where reliable interruption is required across all three phases. The 3-pole design ensures balanced protection for your 480V three-phase circuits, helping to guard motors, transformers, and feeders from overloads and short circuits.

Important: before you order, confirm fit and ratings on your equipment. The part number is your best reference for compatibility—the HE3A110 designation directly ties this breaker to the matching Siemens family for streamlined replacement.

• Amperage: 110A
• Poles: 3-Pole
• Voltage: 480V
• Application: maintenance, retrofit, and replacement in compatible Siemens panels and gear

Who is this for? Industrial facilities, manufacturing plants, and electrical contractors who need a reliable, easily sourced breaker that aligns with existing Siemens protection schemes. Ideal for updating older gear, upgrading panels, or keeping spare parts on hand to minimize downtime.

How it stands apart from generic equivalents: the HE3A110 is a Siemens-built, 3‑pole 480V breaker that plugs into Siemens distribution equipment with a reference to its part number for quick cross-checking. Rather than approximate compatibility, you get a clearly defined fit backed by Siemens engineering, reducing the risk of mis-match during retrofit or maintenance projects.

Practical tips for installation and use: - Verify the HE3A110 matches your panel’s frame type and breaker's trip characteristics. - Use the part number as the primary compatibility reference when comparing to your existing protection scheme. - Follow Siemens guidelines for wiring and terminal torque to ensure secure connections in busy, high-impedance environments. - Keep a spare HE3A110 on site for planned maintenance and faster changeovers in critical systems.