The increasing automation and electrification of our daily lives is leading to a growing demand for safe, robust and energy-efficient ways to switch relatively large amounts of power. From domestic solar-power systems to electric vehicle chargers, relays play an important role in controlling the flow of current and protection against faults.

In the latest edition of Engineers' Insight, Martin Keenan explores the design challenges when it comes to high-voltage, high current relay applications, and some of the options available to engineers.