Home / Products / Low Voltage Circuit Breaker / Air Circuit Breaker (ACB) / QW2 200A to 1000A Air circuit breaker
QW2-1000 series intelligent air circuit breakers (hereinafter called ACB) are applied for the network circuit of AC 50Hz,rated voltage 400V,690V and rated current up to 1000A. Mainly used for distributing energy and protecting the circuit and power supply device against short circuit, under-voltage, single phase ground fault etc.
description
General
QW2-1000 series intelligent air circuit breakers (hereinafter called ACB) are applied for the network circuit of AC 50Hz,rated voltage 400V,690V and rated current up to 1000A. Mainly used for distributing energy and protecting the circuit and power supply device against short circuit, under-voltage, single phase ground fault etc. The ACB have intelligent protection function and the key parts adopt intelligent release. The release can make the accurate selective protection, which can avoid cutting off the power and improve the reliability of power supply. The products confirm with IEC60947-2, GB14048.2.
Applications and functions
Incoming-feeder and outgoing-feeder function in distribution systems
Switching and protecting large powers, motors, capacitors, generators, transformers, busbars and cables
Overload protection
Short-time delayed short-circuit protection
Instantaneous short-circuit protection
Used in building, industry, energy and infrastructures
Features
Modular design
Components like auxiliary releases, motorized operating mechanisms, electronic releases, current sensors, auxiliary circuit signaling switches, automatic reset devices, interlocks and engagement operating mechanisms can all be exchanged or retrofitted in the back ground, thus allowing the circuit breaker to be adapted to new, changing required.
Communication
The use of modern communication-capable circuit breakers opens up completely new possibilities in terms of start-up, parameterization, diagnostics, maintenance and operation. This allows varieties of ways of reducing costs and improving productivity in industrial plants, buildings and infrastructure projects.
Easy wiring by different terminals
A wide variety of terminals are offered, to guarantee an optimal solution for connection to the power circuit under different applications.
Technical specifications
Standard: IEC 60947-2
Number of poles: 3-pole, 4-pole
Rated operational voltage Ue: 400 V, 690 V
Rated insulating voltage Ui: 1000 V
Rated frequency: 50 - 60 Hz
Rated impulsed withstand voltage Uimp: 12 kV
Neutral pole current-carrying capacity for 4-pole CBs: 100% In
Installation: Fixed type, draw out type.
Operation: Motor-driven, manual
