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, according to the TS EN 61008-1 standard.
AC Type Residual Current Protection Switches (SHM-2, SHM-4, SGM-2, SGM-4)
It provides protection against AC leakage currents in electrical networks with 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 5th Harmonic) leakage currents.
Uses: LED lighting including LED drivers and dimmers, elevators and escalators
B Type Residual Current Protection Switches (SKM-2, SKM-4, SNM-2, SNM-4)
Provides protection against AC and DC leakage currents.
Areas of use: Variable frequency motor drives, industrial machines, photovoltaic plants, static transfer systems (STS), uninterruptible power supplies (UPS), Direct current (DC) drives, frequency converters, medical diagnostic imaging devices, EV charger, industry medical fields, driver systems
Type B residual current circuit breakers can be used safely in all applications where type A and AC type are used.
2 pole (1P+N) or 4 pole (3P+N) selection possible
6kA or 10kA short circuit breaking capacities
Possibility to choose AC, A, or B according to the load characteristic it will protect
Rated currents from 25A to 125A,
10mA and 30mA life protection and 300mA fire protection threshold
Need-oriented application with delayed and non-delayed products that prevent unnecessary deactivation of residual current protection switches
