YOSHINE Single-Phase Automatic Reset Voltage Protection Relay

The YX742S0H1 Single-Phase Automatic Reset Voltage Protection Relay is developed for applications that require adjustable sensitivity and fast recovery behavior. Designed to monitor voltage conditions in single-phase systems, this relay helps support consistent equipment performance by disconnecting loads when voltage moves outside preset thresholds and restoring operation automatically once conditions normalize.

Equipped with DPDT output characteristics, the YX742S0H1 provides switching flexibility for control circuits, alarm interfaces, and automation systems. The DPDT configuration enables integration into electrical panels where multiple control paths are required, offering adaptability for various installation scenarios across commercial and industrial environments.

One of the defining features of this model is its adjustable hysteresis voltage from 5% to 25%. This adjustment allows users to tune the relay’s response to voltage fluctuations according to application needs. Systems that experience frequent minor variations can use a wider hysteresis setting to reduce switching frequency, while more sensitive equipment may benefit from narrower settings for closer monitoring.

The device operates within a 12–72VAC/DC working voltage range, making it suitable for low-voltage control systems, automation equipment, and specialized electrical installations. This voltage range supports applications where stable monitoring is required but standard mains voltage is not used, such as control cabinets, machinery interfaces, and auxiliary power circuits.

A fast recovery delay of 0.1 seconds allows the relay to restore power quickly once voltage returns to acceptable levels. This characteristic supports processes that rely on minimal downtime while still maintaining protective functionality. Quick recovery can be particularly useful in automation scenarios where continuity of operation influences overall system efficiency.

The YX742S0H1 features a compact form factor compatible with standard DIN-rail mounting, helping simplify installation and panel organization. Its design supports routine electrical environments and can be incorporated into both new equipment builds and system upgrades. The adjustable hysteresis capability also makes the relay adaptable across multiple project requirements without needing different product variants.

In summary, the YX742S0H1 offers a flexible voltage monitoring solution for low-voltage single-phase systems. With adjustable hysteresis, DPDT output, and rapid recovery performance, it supports applications that require responsive protection and configurable behavior within compact electrical installations.