Siemens 5SY4110-7 10A 1-Pole 400 V Circuit Breaker

Meet the Siemens 5SY4110-7—a dependable, single-pole circuit breaker built for 400 V electrical systems. With a 10 A rating, this device delivers precise overcurrent protection for single‑phase circuits in residential, commercial, and light industrial panels. As a member of the trusted Siemens 5SY family, the 5SY4110-7 is engineered for reliable performance, clear trip characteristics, and long-term service in standard DIN rail installations.

Key specifications

• Current rating: 10 A
• Poles: 1
• Voltage rating: 400 V
• Mounting: DIN rail compatible for quick, secure panel installation
• Part number: 5SY4110-7
• Product type: Circuit breaker (single-pole, overcurrent protection)

What this means for your setup

Designed to protect single‑phase circuits, the 5SY4110-7 intercepts overloads or short circuits before damage occurs, helping to prevent electrical fires and equipment failure. Its 400 V rating makes it suitable for distribution panels that handle both lighting and general-purpose outlets in mixed voltage environments. The compact, DIN rail form factor simplifies retrofits and new installations within standard electrical enclosures.

Ideal use cases

• Protecting lighting circuits and switchgear in residential or small commercial panels
• Safeguarding outlets and low‑power equipment in home offices, workshops, or retail spaces
• Serving as a reliable, replaceable safety device in control panels for machines and processes

Installation and compatibility

• Designed for easy drop-in replacement in compatible Siemens panels and other DIN rail systems
• Part of a consistent protection family, making upgrades or maintenance straightforward
• Ideal for applications requiring standard single‑pole protection with a clear 10 A limit

Why choose the Siemens 5SY4110-7

• Authentic Siemens reliability and clear trip characteristics tailored for single‑phase circuits
• Exact part match for existing Siemens equipment, simplifying maintenance and part sourcing
• Solid, tried-and-true design that minimizes nuisance trips and supports durable panel performance

Whether you’re updating an aging panel, expanding a distribution board, or standardizing protection across multiple circuits, the Siemens 5SY4110-7 10A 1-Pole 400 V Circuit Breaker offers precise, dependable single‑pole protection with straightforward installation and long-term service life.