China SJKW1-2000 intelligent universal circuit breaker Suppliers, Company

Designed for 50Hz AC distribution networks (up to 690V, 200A-6300A), this Air Circuit Breaker provides overload, short-circuit, undervoltage, and ground-fault protection. Its intelligent selective protection enhances power reliability, while open communication interfaces enable remote control for automation systems. Rated for altitudes ≤2000m (8kV impulse withstand voltage), it also functions as an isolator without controllers. Combines precision protection with smart grid compatibility.

Product Description

Type Designation
Intelligent Universal Circuit Breaker
Rated current in scope of frame size
1600 type 200A, 400A, 630A, 800A, 1000A, 1250A, 1600A
2000 type 630A, 800A, 1000A, 1250A, 1600A, 2000A
3200 type 2000A, 2500A, 3200A
4000 type 2500A, 3200A, 4000A
6300 type 4000A, 5000A, 6300A
Number of poles 3-default; 4-4 pole
Installation Fixed type-horizontal, vertical; Drawout type-horizontal, vertical
Intelligent controller M type / 2M type: digital display, over-current protection (overload, short delay, instantaneous), 4P or 3P+N have earthing protection.
3M type: LCD display, over-current protection.
H type / 2H type: communication function, digital display.
3H type: communication function, LCD display.
Common use accessory Shunt release, Undervoltage release (instantaneous and time-delay), Closing electromagnet, Motor-driven energy-storage mechanism, Auxiliary contact (4a4b, 2a6b, 3a3b).
Optional accessory Mechanical interlock (1 lock+1 key, 2 lock+1 key, 3 lock+2 keys), Automatic power transfer system, Current transformer connected with neutral lead.
Product Display
Technical Parameters
Rated current of frame (Inm) 1600 2000 3200 4000 6300
Ue (V) AC400V / AC690V AC400V / AC690V AC400V / AC690V AC400V / AC690V AC400V / AC690V
Ui (V) 1000 1000 1000 1000 1000
Rated Frequency (HZ) 50HZ 50HZ 50HZ 50HZ 50HZ
Icu (kA) 400V 65 85 100 100 120
Icu (kA) 690V 50 50 65 65 80
Ics (kA) 400V 55 50 65 65 80
Ic (kA) 1s 400V 55 50 65 65/80(MCR) 85/100(MCR)
Installation and Overall Dimensions
FAQ
What frame sizes are available for this intelligent circuit breaker?
The circuit breaker is available in frame sizes 1600, 2000, 3200, 4000, and 6300, covering a current range from 200A up to 6300A.
What are the different types of intelligent controllers available?
We offer M type (digital/LCD display with over-current protection) and H type (includes communication functions along with digital/LCD displays).
Does the circuit breaker support 4-pole configurations?
Yes, the device is available in both 3-pole (default) and 4-pole versions, with earthing protection available for 4P or 3P+N setups.
What are the installation options for these units?
The units can be configured as either Fixed type or Drawout type, with both horizontal and vertical installation possibilities.
What is the rated insulation voltage (Ui) and frequency?
The rated insulation voltage (Ui) is 1000V, and it operates at a rated frequency of 50Hz.
Are there options for mechanical interlocking?
Yes, optional mechanical interlocks are available for single, double (steel cable or connecting rod), or triple circuit breaker configurations.

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