Siemens 5SY4108-7 Circuit Breaker

Siemens 5SY4108-7 is a 1-pole miniature circuit breaker designed for 230/400 V AC circuits, with a nominal current rating of 8 A and a C-trip characteristic. It delivers up to 10 kA short-circuit breaking capacity and is intended for DIN-rail mounting in modular distribution panels. The device carries an IP20 enclosure rating and has a depth of about 70 mm, aligning with compact, indoor installations. As part of the Siemens 5SY family, it provides reliable overcurrent protection for single-phase branches in residential, commercial, or light industrial panels, safeguarding wiring and connected loads such as lighting circuits and receptacle feeds. The 5SY4108-7 is designed for straightforward replacement in compatible Siemens or Siemens-specified panels, offering predictable trip behavior and a compact footprint that fits tightly in crowded enclosures.