Siemens 5SY4116-7 16A 1-Pole 400 V Circuit Breaker

Meet the Siemens 5SY4116-7 16A 1-Pole 400V Circuit Breaker — a genuine Siemens overcurrent protection device designed to safeguard electrical circuits in commercial, industrial, and advanced residential installations. Carrying the part number 5SY4116-7, this breaker delivers precise, dependable protection for a single live conductor, helping to prevent overloads and short circuits from compromising your system.

• Exact current rating: 16 A to keep branch circuits within safe operating limits and prevent wiring damage.
• 1-Pole design: Targeted protection for a single hot conductor, suitable for single-phase circuits or individual lines within a 3-phase setup.
• 400 V capacity: Rated for systems up to 400 V, making it versatile for line-to-line voltages in modern electrical networks.
• Reliable Siemens engineering: Consistent trip characteristics and durable construction, ensuring predictable performance over time.
• Easy integration: Designed for compatibility with Siemens distribution boards and standard panel installations, simplifying replacements and upgrades.

Where and how you’ll use it

This 5SY4116-7 is ideal for protecting individual circuits in Siemens-compatible panels—whether you’re wiring lighting, receptacle circuits, or control lines in commercial spaces, industrial facilities, or residential buildings with a three-phase backbone. It’s a practical choice when you need dependable, field-proven protection without sacrificing panel compatibility.

Why this matters

Overcurrent protection is essential for maintaining electrical safety and minimizing downtime. With a 16A rating, a 1-Pole configuration, and a 400V rating, this Siemens breaker provides precise disconnection when currents exceed safe levels, helping to prevent insulation damage, wiring overheating, and potential fire risks. Pax-like reliability from a trusted brand means fewer surprises during maintenance and a smoother path to code-compliant installations.

Installation and compatibility tips

Ensure your panel is rated for 400V and designed to accept Siemens 5SY-series breakers. Confirm that the circuit’s current requirement aligns with the 16 A rating, and follow standard electrical best practices for connection and torque as specified by your panel’s manufacturer. When in doubt, replace with the exact part number to maintain system reliability and warranty coverage.

Part number: 5SY4116-7 • Current rating: 16 A • Poles: 1 • Voltage rating: 400 V