Residual current protection relays are essential equipment in electrical installations, designed to protect living beings from electric shocks and fire hazards in the event of a possible leakage current. The Sigma Residual Current Protection Relay provides comprehensive protection when used in combination with an LV circuit breaker, trip coil, and toroidal transformer.
Sigma Residual Current Protection Relay
• Leakage current threshold value in the range of 30mA-30A
• Adjustable time delay between 50ms – 350ms
• Trip time under 15ms
• Power consumption less than 3VA
• 100,000 electrical life
• 5,000,000 mechanical life
• Possibility of mounting on 35mm DIN rail
• Test button to simulate leakage current conditions
Toroidal Transformers
Sigma Electric offers a portfolio of toroidal current transformers suitable for various project needs.
• Sigma Toroid Current Transformers according to their inner diameters;
• Rectangular with dimensions of 280*115mm, 470*160mm
• Openable sizes: 110mm and 210mm
• Standard types in sizes: 80mm, 110mm, 160mm, 210mm, and 300mm
