Earth Leakage Protection Relay and Toroidal Transformers

As one of the most critical protection equipment for electrical installations, Earth Leakage Protection Relays protect living beings against electric shock and fire hazards in the event of potential leakage current risks.

Sigma Residual Current Detection Relays operate synchronously with LV circuit breakers, shunt trip coils, and toroidal transformers to provide comprehensive protection against leakage currents.

Thanks to its extensive toroidal current transformer portfolio, Sigma Elektrik enables the easy selection of the most suitable product for the technical requirements of any project.

Earth Leakage Protection Relay

Manufacturing versions in Type A and Type F (harmonic filtered) types

Adjustable residual current threshold range from 30 mA to 30 A

Time-delay setting capability between 50 ms and 350 ms

Fast response time with a tripping time of less than 15 ms

Power consumption of less than 3 VA

100,000 electrical endurance cycles and 5,000,000 mechanical endurance cycles

DIN-rail mounting capability on 35 mm rails

Test button to simulate residual current conditions

Toroidal Transformers

Sigma Elektrik features an extensive Toroidal Current Transformer portfolio that offers the opportunity to select the most suitable product for any project requirement.

Sigma Toroidal Current Transformers are manufactured in the following types based on their internal dimensions:

Rectangular Type Sigma Toroidal Transformers: 280x115 mm and 470x160 mm dimensions

Split-Core Type Sigma Toroidal Transformers: 110 mm and 210 mm dimensions

Standard Type Sigma Toroidal Transformers: 80 mm, 110 mm, 160 mm, 210 mm, and 300 mm dimensions