Siemens 5SY4316-7 Three-Phase Circuit Breaker

Siemens 5SY4316-7 is a SENTRON mini circuit breaker (MCB) designed to protect three-phase circuits in commercial and industrial electrical panels. The 5SY4 family device is rated for 400 V with a nominal current of 16 A and a short-circuit breaking capacity of 10 kA, making it suitable for distribution sections and motor-related loads that require reliable short-circuit protection. It has a 3-pole configuration and a C-type trip characteristic, which provides instantaneous trip for high fault currents while allowing normal operation for low overcurrents. The physical form is compact, with a depth of 70 mm and a weight around 0.447 kg, facilitating straightforward integration into standard enclosures. When used in appropriate three-phase installations, the 5SY4316-7 can protect individual branches or motor circuits from overcurrents and short circuits, helping to meet electrical safety and reliability requirements in line with European standards. The device is identified by the model 5SY4316-7 and features a 400 V rating and 10 kA breaking capacity, reinforcing its role in safeguarding three-phase distribution networks against overload events. Common applications include protection of branch circuits in control panels, lighting installations, and small motors within commercial or light industrial settings.