It performs the functions of separation and protection of connecting circuits from the over load and short-circuit. When they are equipped with motor mechanism then they become ready to take off at any moment. They are produced 800 A up to 6300 A as with drawer and fixed type in accordance with TS EN 60947-2 and CE norms. 2 NO + 2NC auxiliary contact is on them as standard. Also, when you are prompted;
Motor set up mechanism
Under voltage coil
Closure coil
Remote trip coil
Mechanic locking for inverter systems
is possible.
At the open type power switches with drawer, circuit breaker can separate to the main circuit with pushing or pulling by the help of arm. Thus, the processes of maintenance and changing becomes easier.
• long term, inverse time delayed, over current protection (Ir)
• short term, delayed over current protection (Im)
• sudden switching on short-circuit protection (Ii)
• Earthing fault protection (Ie)
To make effective protection by circuit breaker, Ir < Im <Ii should be.
Short term, delayed over current protection (Im)
With the protection function of short term over current, circuit breaker protects the circuit, that connects with, against the short-circuit current. To ensure the selectivity, short term delay function is utilized with the circuit breaker on load side. If over current which passes on the circuit is bigger than 8xIr, the opening time changes automatically; 0,06 sec for 0,1 sec; 0,14 sec for 0,2 sec; 0,23 sec for 0,3 sec; 0,35 sec for 0,4 sec.
Sudden switching on short-circuit protection (Ii)
With the property of sudden switching on, circuit breaker protects the circuit, that connects with, against the high level short-circuit current. For sudden switching on, opening time delayed is not adjustable. When the passing current becomes over the 1.15xIi, circuit breaker open the circuit without any delay.
Earthing fault protection (Ie)
With the property of sudden switching on, circuit breaker protects the circuit, that connects with, against the high level short-circuit current.
Accessories
Under Voltage Coil
Under voltage coil opens the power switch when power cut or voltage coil rated value between the 35 % and 70 % at its tips. To reenergize rated values should be at least 85 %. Delayed type under voltage coil begins to work at the end of the delay time. So, it is preferred at the network which temporary voltage decreasing occurs in. delay time can be set as 0,5-1-3-5-10-20 sec.
Motor Mechanism
It makes the switch ready to close. After the switch is closed, it storages the energy establishing the re-establishing mechanism.
Tripping Coil
It benefits to the remote tripping of the power switch at the ON position. Tripping coil rated value is between the 70 % and 110 %.
Closing Coil
After it provides the spring energy storage, it ensures that the switch is ON position. Its rated value is between the 85 % and 110 %.
Auxiliary Contact
Changing the location together with contacts at the ON and OFF positions of power switches it serves the taking warning with sound and light and locking. They are being shipped to the customer as 2NO+2NC auxiliary contact fitted to the power switch. Its maximum thermic current is 6 A.
Mechanical Locking
With the mechanical locking in between two circuit breakers, commissioning the circuit breakers at the same time is prevented. It is usually preferred in system of network-generator inverter.
