Product overview A DINrail mounting automatic voltage protection and monitoring module designed for 230VAC 50/60Hz installations. Protects connected equipment from overvoltage and undervoltage events, shows realtime line voltage, and restores service automatically when voltage returns to acceptable levels. Available models: TVPS140A TVPS163 A. Key benefits Protects equipment from harmful voltage fluctuations by disconnecting the load during overvoltage or undervoltage conditions. Automatic recovery reduces downtime by reconnecting power after voltage stabilizes, eliminating the need for manual resets. Builtin voltage display lets you monitor line voltage directly at the distribution point for faster diagnostics. Adjustable protection thresholds and timing let you tailor behavior to local grid conditions and device sensitivity. Compact 35 mm DIN rail installation for easy integration into distribution cabinets and control panels. Main functions Overvoltage protection with adjustable trip setpoint and recovery setpoint. Undervoltage protection with adjustable trip setpoint and recovery setpoint. Automatic recovery after voltage returns to the configured recovery range. Realtime voltage display for voltage measurement and monitoring. Voltage correction settings to fine tune protection behavior. Technical specifications Models: TVPS140A TVPS163 A Rated supply: 230VAC 50/60Hz Maximum continuous load: 40A or 63A depending on model Overvoltage protection setpoint range: 230V to 300V or OFF Overvoltage recovery range: 225V to 295V Overvoltage action time: adjustable 0.1s to 30s, default 0.5s Overvoltage recovery delay: adjustable 1s to 500s, default 30s Undervoltage protection setpoint range: 140V to 210V or OFF, default 170V Undervoltage recovery range: 145V to 215V, default 190V Undervoltage action time: adjustable 0.1s to 30s, default 0.5s Undervoltage recovery delay: adjustable 1s to 500s, default 30s Poweron delay time: adjustable 1s to 500s, default 10s Power consumption: less than 2W Mechanical life: rated for 100,000 operation cycles Mounting: 35 mm DIN rail Performance and reliability Fast configurable action times protect sensitive electronics and motors while allowing short transients to pass when desired. Adjustable recovery delays prevent rapid on off cycling when voltage is unstable. Long operational life and low standby power consumption make the unit suitable for continuous use in distribution panels. Installation and setup Mount on a standard 35 mm DIN rail inside an electrical enclosure. Connect to the 230VAC supply and load according to local wiring rules and the product wiring diagram. Configure protection thresholds and timing to match supply characteristics and the tolerance of connected equipment. Note on initial powerup: when first connected the device uses the configured poweron delay. Typical default is 10 seconds. Wait until the red indicator turns off before the module enters normal operation. Typical applications Residential distribution boards to protect household appliances such as refrigerators, washing machines, and HVAC equipment from sustained or low mains voltage. Small commercial or retail electrical panels to safeguard point of systems, lighting, and small motors. Equipment rooms and generator/inverter setups where controlled reconnection and voltage monitoring reduce the risk of damage to sensitive loads. Why choose this product Clear, adjustable protection parameters for both overvoltage and undervoltage conditions. Integrated voltage display for quick status checks without additional meters. Automatic recovery and configurable delays reduce manual intervention and risk of rapid cycling. Suitable for 230VAC 50/60Hz systems with options for 40A or 63A maximum continuous load. Models available TVPS140A for installations up to 40A TVPS163 A for installations up to 63A Keep documentation and wiring diagrams accessible during installation and set protection values according to the needs of the connected equipment and local electrical codes.