YOSHINE Single-Phase Automatic Reset Voltage Protection Relay

The YX742S0R2 Single-Phase Automatic Reset Voltage Protection Relay is designed to support stable electrical operation by monitoring voltage conditions and responding when irregularities occur. Built for single-phase systems, this relay helps reduce the impact of over-voltage or under-voltage situations that may affect connected equipment. Its automatic reset function allows the system to return to normal operation once voltage levels move back within the preset range, helping maintain workflow continuity without frequent manual intervention.

Featuring DPDT output characteristics, the YX742S0R2 provides flexible control options for different electrical configurations. This makes it suitable for use in distribution panels, automation cabinets, commercial facilities, and light industrial environments where voltage monitoring plays a role in equipment reliability. The DPDT structure also supports integration with control circuits that require switching capability across multiple contacts.

The relay operates within a working voltage range of 100–265VAC/DC, allowing it to be applied in a wide variety of power environments. This range supports common global voltage standards, making the device adaptable for different regional requirements and project specifications. With a 5% hysteresis voltage, the relay helps prevent repeated switching caused by minor voltage fluctuations, contributing to smoother system behavior.

A recovery delay of up to 30 seconds provides a buffer period before reconnection. This delay allows voltage conditions to stabilize, which can help limit unnecessary restart cycles for sensitive equipment such as compressors, pumps, or electronic control systems. The delayed recovery approach supports more controlled power restoration after abnormal events.

The YX742S0R2 is structured for straightforward installation, with a compact design that fits typical DIN-rail setups. Its construction supports consistent operation in routine electrical environments while allowing integration into new builds or retrofit projects. Engineers and technicians can incorporate the relay as part of a broader protection strategy that includes circuit breakers, surge protection devices, and monitoring systems.

Overall, the YX742S0R2 provides a practical solution for voltage supervision in single-phase applications. By combining automatic reset functionality, stable hysteresis behavior, and adaptable voltage compatibility, it supports electrical systems that require dependable monitoring without complex configuration. This makes it a useful component for projects focused on maintaining operational stability across everyday power conditions.