Siemens | EF3A110L | Circuit Breaker | 110A | 3-Pole | 600V

Meet the Siemens EF3A110L Circuit Breaker — a reliable, high-performance protective device engineered for demanding electrical panels. With a 110 A rating across three poles and a 600 V operating range, this unit is designed for maintenance, retrofit, and replacement projects where exact specifications matter. The EF3A110L is identified by its part number, making compatibility straightforward and reducing guesswork during procurement.

• Amperage: 110 A
• Poles: 3-Pole
• Voltage: 600 V
• Part number: EF3A110L
• Recommended uses: Maintenance, retrofit, and replacement
• Compatibility note: The part number is the best reference for ensuring a proper fit; confirm fit and ratings before ordering.

What sets the EF3A110L apart is how it aligns with Siemens standards while delivering precise protection for three-phase systems. The three-pole design provides synchronized protection across all phases, simplifying panel protection logic and reducing the risk of uneven loading or accidental startup. The 600 V rating covers a broad range of commercial and light-industrial distribution environments, while the 110 A rating is well-suited for feeders and branch circuits in mid-size installations.

Ideal use scenarios include:

• Replacing a failed breaker in a 3-phase, 600 V panel without changing other components
• Retrofit projects that require an exact Siemens part for seamless panel compatibility
• Maintenance of critical equipment where reliable, consistent protection is essential

Practical ordering and installation notes:

• Always verify fit and ratings before ordering to ensure compatibility with your panel and system design
• Use the EF3A110L part number as the primary reference when matching breakers to existing Siemens equipment
• During installation, follow standard electrical safety practices and consult a qualified professional for proper mounting and electrical connections