DIGITAL PANELMETERS
Sigma Digital Panelmeters are produced for measuring AC current and Voltage in 96x96 mm and 72x72 sizes, when used together with current transformers, the digital ammeters show the currents connected to the systems they have such features that thanks to SET buton the currents, up to 5000A, can be showed through Current transformer.
ANALOG PANELMETERS
Sigma Analog Panelmeters are produced according to TS 5590 EN 60051-2 standards for measuring AC current and Voltage in 96x96 mm and 72x72 sizes. Analog Type Ammeters are suitable for 30-50 and 100A direct using and accuracy class is 2.5. With CTs from 30A up to 5000A, they can measure the AC currents as 1,5 class.Analog type Voltmeter are produced in 2 different values in order to measure 250V and 500V AC voltage.
RESIDUAL CURRENT CIRCUIT BREAKERS
Sigma RCCBs are protection devices that can protect the human life against dangerous electrical shocks or can prevent the fires occured from isolation failures by stating the possible isolation failures before.
MINIATURE CIRCUIT BREAKERS
Sigma MCBs are such devices that they protect their connected circuits against short circuit and overload.Sigma MCBs produced as 3 kA, 4.5 kA, 6 kA, 10 kA and 16kA according to the IEC standards are appropriate for EC low voltage directive72/23/CEE as well.
THERMAL OVERLOAD RELAYS
Sigma Thermal Overload Relays protect its connected motor Circuits against overcurrent and phase loss. Thermal Relays have such a features that they can be used beside its connected Contactors can be used also with 35mm DIN rail adaptor as seperately.
Low Voltage Moulded Case Circuit Breakers
Sigma’s Low Voltage Moulded Case Circuit Breakers (MCCB) are produced as 1, 3 and 4 poles from 25 A to 1600 A according to TS 1058 EN 60947-2 and CE standards. MCCBs are used for protecting the circuits that have different load characteristics(cables, motors, lighting, generators)
LV CONTACTORS
Sigma Low Voltage Contactors are produced according to TS EN 60947-4-1 standards as 3 poles. As mentioned in TS EN 60947-4-1 standards they are used safely in different categories for switching and remote control of motors, lighting systems, compansation systems and various ınductive loads.
LV CURRENT TRANSFORMERS
Sigma LV Current Transformers(CT) can convert the primarry current which is from 20A upto 5000A in the requested power and accuracy value into the secondary current which is 1 or 5A value. Sigma CTs are produced in 9 different sizes according to TS 620 EN 60044-1 standards for different busbar dimensions. Sigma CTs can be produced with sealed by Industry and commerce Ministry When requested
CONTACTORS FOR CAPACITOR SWITCHING
They are desıgned as a particular for controlling the 3 poles condenser. thanks to speacial blocks connected to the current limiting resistance which is on the Contactors they hinder cleaving the main contacts of the Contactor to eachother by limiting the high peak currents till 70 times of maximum rated current and this lengthen contactor’s life.