High Voltage RelayRL 42-H When voltages of up to 10,000 VAC must be switched in combination with high currents, suitable switching components are difficult to realize. To address these challenges, SPS electronic has developed specialized oil-immersed high-voltage relays. In addition to reliable switching of high voltages and currents, these relays are capable of handling very low signal levels in the millivolt and milliampere range. In combined safety and functional test systems, precise resistance measurements in the milliohm range are often required, placing extremely high demands on switching contact quality. Designed for industrial applications, the relays ensure long service life and dependable performance. Proven electrome -chanical relay technology makes them a robust and reliable solution for system integration and control cabinet applications, particularly in safety and functional testing of electrotechnical products. High Voltage Relay RL 42-H | 06.2026 Subject to change and error. Please note: that in Europe, we use a comma as the separator, while in the USA, a period is used.