YOSHINE Single-Phase Automatic Reset Voltage Protection Relay

The YX742S0H2 Single-Phase Automatic Reset Voltage Protection Relay is designed for standard mains voltage applications that require configurable response behavior and rapid system restoration. By monitoring voltage levels continuously, the relay helps manage abnormal conditions and automatically reconnects loads once parameters return to the acceptable range.

With DPDT output characteristics, the YX742S0H2 supports versatile switching functions across different control schemes. This configuration allows integration into distribution panels, building electrical systems, and automation equipment where multiple contact outputs are needed for coordination between monitoring and control circuits.

A key feature of this model is its adjustable hysteresis voltage between 5% and 25%, allowing users to tailor the relay’s sensitivity to voltage changes. This flexibility helps accommodate environments with varying power stability, enabling installers to balance responsiveness with reduced switching frequency. Adjustable hysteresis can be useful when managing equipment that reacts differently to short-term voltage variation.

The relay operates within a working voltage range of 100–265VAC/DC, making it compatible with many common single-phase power systems. This range supports use across commercial buildings, equipment panels, and light industrial installations where stable voltage monitoring is part of routine electrical design.

The 0.1-second recovery delay enables quick reconnection once voltage conditions stabilize. This fast recovery supports applications where maintaining process continuity is important, while still allowing protective disconnection during abnormal voltage events. Rapid restoration can help reduce interruption time in automated and electronically controlled environments.

Designed with installation convenience in mind, the YX742S0H2 fits standard DIN-rail mounting and integrates easily into typical electrical panel layouts. Its compact structure supports organized wiring and efficient use of panel space. The combination of adjustable hysteresis and wide voltage compatibility allows the relay to be used across multiple projects without extensive configuration changes.

Overall, the YX742S0H2 provides a balanced voltage protection solution for single-phase mains systems. By combining adjustable response settings, DPDT switching capability, and quick recovery performance, it supports electrical designs that require both monitoring flexibility and stable operational continuity.