Product Description

The SINOTIMER SVP-921VA is a surge protection device designed for mounting on a DIN rail. It protects electrical installations and equipment from power surges and sags. It monitors the voltage and current in real time, displaying the values on a digital LED screen, and automatically disconnects the power supply when parameters exceed preset limits. After the supply stabilizes, it reconnects automatically after the configured delay time.

Technical Specifications

• Rated Voltage: 230V AC
• Maximum Current: 63A
• Frequency: 50/60Hz
• Input Voltage Range: 230V - 300V (surge)
• Sag Range: 140V - 210V
• Recovery Time: 1 - 500 seconds
• Display: Digital LED (voltage and current)
• Mounting: DIN Rail
• Connection Type: Screw Terminals
• Protection Degree: IP20
• Casing Material: Durable ABS resistant to high temperatures

Electrical Connections

• 1 (L) phase input
• 2 (N) neutral input
• 3 (L) phase output to load
• 4 (N) neutral output to load

The wiring diagram is marked on the product enclosure.

Operation

• Continuously monitors the network voltage
• If voltage exceeds the set limits: disconnects the supply
• When voltage returns to normal range: starts the timing and automatically reconnects the load

Adjustable Parameters

• Overvoltage limit
• Undervoltage limit
• Reconnect delay time
• Reaction time
• Voltage calibration

Settings are adjusted via the front buttons (+ / - / SET).

Interface

• Dual LED display (voltage / current)
• SET button for menu access
• + and - buttons for adjustments
• Mechanical ON/OFF button
• LED indicator for operational status

Advantages

• Overall protection for the entire installation
• Ideal for electrical panels
• Supports high loads (up to 63A)
• Real-time monitoring
• Flexible Settings
• Quick installation on DIN rail

Applications

• Residential electrical panels
• General home protection
• Light industry equipment
• HVAC systems
• Servers and IT equipment

Usage Conditions

• Installation must be performed by authorized personnel
• Use in dry environments
• Ensure correct polarity L/N
• Do not exceed the maximum allowable current

Package Contents

• 1 x SINOTIMER SVP-921VA surge protection device
• 1 x User manual