KFW3 Series
Intelligent Air Circuit Breaker
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Intelligent Air Circuit Breaker
Product Features
1.Humanized design with multiple options:
(1)There are two types of circuit breakers: drawer type and fixed type, which can use upper incoming line or lower incoming line. We can quickly achieve horizontal connection, vertical connection, and mixed connection;
(2)The auxiliary circuit can have up to independent 10 open and 10 closed contacts;
(3)Optional three position contact and ready to close contact;
(4)Optional with internal temperature measurement and protection functions to protect the use of circuit breakers;
(5)Optional regioselectivity interlocking function ensures complete selectivity of all levels of protection.
(6)High safety performance: The drawer type circuit breaker has three indicating and locking devices for "connection", "test", and "separation";
2.More flexible operation:
(1)Different intelligent controllers can be selected to achieve rich parameter detection and meet different monitoring requirements;
(2)The controller has multiple protection characteristic curves to meet different application scenarios;
(3)Intelligent controller with residual current protection function can be provided;
3.Convenient integration and easy network management: Adopting an open Modbus-RTU communication protocol, it can be connected to Profibus or Devicenet fieldbus through a converter;
4.Real time parameter recording function: When the circuit breaker is in the closed state, the current operating parameters are recorded every 15 minutes. The stored information can be read from the programming port through dedicated programs and devices, and queried through dedicated software installed in the computer;
5.Suitable for use in environments with temperatures ranging from -40 ℃ to 70 ℃, with an altitude of up to 5000m.
1.Humanized design with multiple options:
(1)There are two types of circuit breakers: drawer type and fixed type, which can use upper incoming line or lower incoming line. We can quickly achieve horizontal connection, vertical connection, and mixed connection;
(2)The auxiliary circuit can have up to independent 10 open and 10 closed contacts;
(3)Optional three position contact and ready to close contact;
(4)Optional with internal temperature measurement and protection functions to protect the use of circuit breakers;
(5)Optional regioselectivity interlocking function ensures complete selectivity of all levels of protection.
(6)High safety performance: The drawer type circuit breaker has three indicating and locking devices for "connection", "test", and "separation";
2.More flexible operation:
(1)Different intelligent controllers can be selected to achieve rich parameter detection and meet different monitoring requirements;
(2)The controller has multiple protection characteristic curves to meet different application scenarios;
(3)Intelligent controller with residual current protection function can be provided;
3.Convenient integration and easy network management: Adopting an open Modbus-RTU communication protocol, it can be connected to Profibus or Devicenet fieldbus through a converter;
4.Real time parameter recording function: When the circuit breaker is in the closed state, the current operating parameters are recorded every 15 minutes. The stored information can be read from the programming port through dedicated programs and devices, and queried through dedicated software installed in the computer;
5.Suitable for use in environments with temperatures ranging from -40 ℃ to 70 ℃, with an altitude of up to 5000m.
Rated working current range: 400 A~7500 A, divided into 5 shell current: 1600A, 2500 A, 4000 A, 5000 A, 7500 A
Short circuit breaking capacity: AC400 V, maximum Ics=100% Icu=135k A
Mechanical service life: up to 20000 times (with maintenance)
Electrical service life: up to 10000 times (400V)
Electronic release: Unit3, Unit4, Unit6
Modular release: Unified installation size allows for the selection of different releases