The SVP-912M 40A Voltage Protection Relay from SINOTIMER is an automatic overvoltage and undervoltage protection device designed for single-phase electrical systems.

Operating at 230V AC, 50/60Hz, this DIN rail-mounted protector continuously monitors the incoming voltage and automatically disconnects connected equipment when the voltage exceeds or falls below the configured protection limits.

Once the voltage returns to the acceptable range, the device automatically restores power after the configured recovery delay.

Featuring a digital voltage display, adjustable protection settings, automatic reconnection, and a 40A rated current, the SVP-912M is suitable for residential electrical panels, commercial installations, and electrical equipment protection.

Key Features

• Overvoltage Protection: Disconnects the load when supply voltage exceeds the configured upper limit.
• Undervoltage Protection: Disconnects equipment when supply voltage falls below the configured lower limit.
• 40A Rated Current: Suitable for appropriately rated single-phase electrical circuits.
• Automatic Reconnection: Restores power when the voltage returns to the acceptable range.
• Adjustable Voltage Thresholds: Allows users to configure overvoltage and undervoltage protection settings.
• Recovery Delay: Delays reconnection following a voltage fault.
• Digital Voltage Display: Displays the monitored supply voltage.
• Manual ON/OFF Switch: Provides local switching control.
• DIN Rail Mounting: Designed for installation inside electrical distribution panels.
• Compact Design: Suitable for residential and commercial electrical installations.

Technical Specifications

Protection Functions

Overvoltage Protection

When the incoming voltage exceeds the configured upper protection limit, the SVP-912M automatically disconnects the connected equipment.

Undervoltage Protection

When the supply voltage falls below the configured minimum level, the device disconnects the load to reduce the risk of equipment malfunction or damage.

Automatic Voltage Recovery

Once the supply voltage returns to the configured acceptable range, the protector automatically reconnects the load after the recovery delay.

Digital Voltage Monitoring

The integrated LED display allows users to monitor the incoming supply voltage directly from the electrical panel.

Adjustable Recovery Delay

The recovery delay helps prevent immediate reconnection during unstable voltage conditions.

Connection and Installation

The SVP-912M is designed for installation on a DIN rail in a single-phase electrical distribution panel.

All wiring must follow the terminal markings and connection diagram supplied with the actual device.

Applications

• Residential Electrical Distribution Boards
• Home Appliance Protection
• Voltage Fluctuation Monitoring
• Commercial Electrical Installations
• Single-Phase Equipment Protection
• Electrical Control Panels
• Water Pump Protection
• Air Conditioning Equipment Protection
• Automatic Voltage Disconnect Systems

Important Notes

• 230V AC mains voltage: Installation must be performed by a qualified electrician.
• 40A rated current: The connected load must remain within the device's electrical rating.
• Overcurrent protection: This model is intended for overvoltage and undervoltage protection. Overcurrent protection is not confirmed.
• Circuit breakers: The protector does not replace an appropriately rated circuit breaker, fuse, or RCD.
• Automatic reconnection: Connected equipment may restart automatically when voltage returns to normal.
• Motor loads: Inductive loads may require additional protective devices.
• Voltage settings: Configure thresholds according to the requirements of the connected equipment.
• Installation: Use a suitable electrical enclosure and follow applicable electrical regulations.

Package Includes

• 1 × SINOTIMER SVP-912M 40A Voltage Protection Relay