Residual Current Circuit Breakers

Sigma Residual Current Protection Switches protect human life in case of direct or indirect contact against electrical leaks and ensure the safety of life and property by preventing the risk of fire caused by insulation faults. Sigma Residual Current Protection Switches are produced in Turkey in accordance with CE norms, under the ISO 9001 quality assurance system, and according to the TS EN 61008-1 standard.

AC Type Residual Current Protection Switches (SHM-2, SHM-4, SGM-2, SGM-4)

Provides protection against AC leakage currents in electrical networks where there are loads that do not contain any electronic components.

Areas of Use: Resistive loads, classical lighting, electrical heaters

A Type Residual Current Protection Switches (SFM-2, SFM-4, SLM-2, SLM-4)

Provides protection against AC and DC (up to the 5th Harmonic) leakage currents.

Areas of Use: LED lighting, elevators, and escalators including LED drivers and dimmers

B Type Residual Current Protection Switches (SKM-2, SKM-4)

Provides protection against AC and DC leakage currents.

Areas of Use: Variable frequency motor drives, industrial machines, photovoltaic installations, static transfer systems (STS), uninterruptible power supplies (UPS), Direct current (DC) drives, frequency converters, medical diagnostic imaging devices

Note: Type B residual current circuit breakers can be used safely in all applications where type A and AC types are used.

F Type Residual Current Protection Switches (SNM-2, SNM-4)

The F type residual current circuit breaker (100 VDC) has been specially developed for use in charging points and wall boxes for charging electric vehicles (EV).

Note: F type residual current circuit breakers can be used safely in all applications where A type and AC type are used.

Areas of Use: EV charger, industrial, medical fields, driver systems