Panel Measuring Instruments

The 40A SVP-915 voltage protection relay is designed to protect single-phase electrical installations from dangerous voltage fluctuations. It continuously monitors the network voltage and automatically cuts off the power supply when preset values are exceeded. It features an automatic reset function, reconnecting the circuit after voltage stabilization.

Technical Specifications

• Rated voltage: 220-240V AC
• Frequency: 50/60 Hz
• Maximum current: 40A
• Maximum supported power: approximately 8.8 kW
• Overvoltage protection range: 221V - 290V (adjustable)
• Undervoltage protection range: 150V - 219V (adjustable)
• Response time: 0.1 - 3 seconds (adjustable)
• Reconnection time: 2 - 120 seconds (adjustable)
• Voltage measurement accuracy: 1%
• Operating temperature: -5°C to +55°C
• Protection rating: IP20
• Dimensions: approximately 58 x 36 x 65 mm

Features

• Overvoltage protection
• Undervoltage protection
• Digital LED display for instant voltage measurement
• Adjustable limits and response times
• Automatic reconnection after stabilization
• Protection for household appliances and sensitive equipment

Electrical Connections

• Terminals:
• IN (L, N) - Power input
• OUT (L, N) - Output to load

It is installed in the electrical panel on a DIN rail, in series with the protected circuit. Installation should be performed by a certified electrician.

Applications

• Protection for refrigerator/freezer
• Protection for heating systems
• Protection for water pumps
• Protection for IT equipment
• Protection for general electrical panels

Recommended settings (household use)

• Overvoltage limit: 260-270V
• Undervoltage limit: 180-190V
• Reconnection time: 30-60 seconds