Siemens 5SY7110-7 Miniature Circuit Breaker, 1-Pole, C10, 15kA

The Siemens 5SY7110-7 is a high-performance 1-pole miniature circuit breaker engineered to provide robust protection against overloads and short circuits in electrical systems. Designed for reliability and safety, this device is suitable for a wide range of applications, including residential, commercial, and industrial environments. It features a C-characteristic and a 10A rated current, ensuring precise tripping behavior under various load conditions. With a breaking capacity of 15kA according to IEC 60898 and 30kA according to IEC 60947, it offers superior performance in demanding electrical installations.

Advantages

This circuit breaker stands out due to its user-friendly design, which allows for tool-free assembly and disassembly using a convenient double slide mechanism. The inclusion of dual-chamber terminals provides flexibility, enabling the simultaneous connection of conductors and busbars. Furthermore, the device supports efficient wiring through rear busbar infeed, simplifying the installation process. As part of the SENTRON series, it is compatible with a wide range of standard accessories, making it a versatile choice for complex electrical distribution systems.

Suitable for

• Industrial electrical installations
• Commercial building power distribution
• Residential electrical panels
• Protection of circuits with moderate inrush currents

This device may not be suitable for applications requiring a different tripping characteristic, such as B or D curves, which are designed for specific load types like purely resistive or highly inductive loads. Additionally, it is intended for use in 230/400V systems and should not be installed in circuits exceeding these voltage ratings or in environments with extreme environmental conditions not specified by the manufacturer.

Key specifications

• Number of poles: 1
• Rated current: 10A
• Tripping characteristic: C
• Breaking capacity: 15kA (IEC 60898) / 30kA (IEC 60947)
• Rated voltage: 230/400V
• Mounting depth: 70 mm
• Terminal type: Dual-chamber

Installation should be performed by a qualified electrician in accordance with local electrical codes. The device is mounted onto a standard DIN rail. To install, align the breaker on the rail and engage the double slide mechanism until it clicks into place. Connect the supply and load wires into the dual-chamber terminals, ensuring they are tightened to the specified torque to prevent loose connections. Always verify the circuit is de-energized before beginning any installation or maintenance work.

What to consider before purchase

• Ensure the 10A rating matches your circuit requirements
• Verify that the C-characteristic is appropriate for your connected equipment
• Check available space in your distribution board for the 70mm mounting depth
• Confirm compatibility with existing busbar systems

Usage recommendations

Regularly inspect the circuit breaker for signs of wear or damage and ensure all terminal connections remain secure over time. Do not attempt to modify the internal mechanism of the device, as this will void safety certifications and compromise protection.