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Specifications
36kA-50kA-70kA25A to 1600A
General:
Molded Case Circuit Breakers MCCB
Low Voltage Moulded Case Circuit Breakers are used for the switching and protection of power supply cables, motor and
other electrical equipment against overloads and short circuit faults.MCCB’s provides, beside protection funtion other
functions as remote ON/OFF operation, undervoltage protection, main switch.
Sigma MCCB’s has been designed to comply with the
following standards
“EN60947 Low-voltage s witchgear and controlgear”:
EN 60947-1 : General rules
EN 60947-2 : Circuit breakers
EN 60947-3 : Switches, disconnectors, switchdisconnectors
and fuse-combination
units
EN 60947- 4 - 1 : Contactors and motor-starters
Section One: Electromechanical
Contastors and motorstarters
EN 60947- 4 - 2 : Control circuit devices and switching
elements
Section One: Electromechanical
Contastors and motorstarters
Technical Data
Protects system, cables, motor & generators
Rated uninterrupted current up to 1600A
3 and 4- pole design
Breaking capacity 25 - 36 - 50 - 70 kA
Electrical and thermo-magnetic releases
Adjustable releases for overload and short-circuit
Adjustable time selectivity
Eart fault protection
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