In modern power distribution and electrical systems, controlling reactive power with precision and reliability is essential for maintaining efficiency, equipment longevity, and compliance with grid codes. One of the core technologies enabling this control is the silicon controlled switch, a semiconductor device commonly implemented in thyristor‑switched capacitor banks (TSCs) and related reactive power compensation equipment. These switches play a pivotal role in dynamic power factor correction, voltage regulation, and harmonic management in three‑phase industrial networks. This article explo...