China W1 ACB intelligent universal circuit breaker Manufacturers, Companies
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China W1 ACB intelligent universal circuit breaker Manufacturers, Companies

China W1 ACB intelligent universal circuit breaker Manufacturers, Companies

The W1 ACB Intelligent Universal Circuit Breaker safeguards 50Hz distribution networks up to 690V/6300A, providing comprehensive protection against overload, short-circuit, undervoltage and ground faults. This intelligent universal circuit breaker features precision selective tripping to maximize uptime, with 8000V impulse withstand (adjustable to 12000V for high altitudes). The W1 ACB supports "four remote" operations via open communication interfaces for seamless SCADA integration. Designed as both protector and isolator (GB14048.2/IEC60947-2 compliant), it delivers reliable performance in industrial power systems without requiring additional controllers.

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Product Description

Type Designation
W1 ACB Intelligent Universal Circuit Breaker Type Designation
1 Enterprise code
2 Universal circuit breaker
3 Design serial number
4 Rated current of circuit breaker frame level
5 Number of poles: 4-pole marked as 4, no marking for 3-pole
Product Display
W1 ACB Intelligent Universal Circuit Breaker View 1
W1 ACB Intelligent Universal Circuit Breaker View 2
W1 ACB Intelligent Universal Circuit Breaker View 3
W1 ACB Intelligent Universal Circuit Breaker View 4
W1 ACB Intelligent Universal Circuit Breaker View 5
W1 ACB Intelligent Universal Circuit Breaker View 6
Product Structure Diagram
Circuit Breaker External Control Diagram
  • ① Secondary Circuit Terminal
  • ② Close Button
  • ③ Trip Button
  • ④ Manual Energy Storage Handle
  • ⑤ Close/Trip Position Indicator
  • ⑥ Energy Storage/Release Indicator
  • ⑦ Front Panel
  • ⑧ In/Out Device
  • ⑨ Position Indicator
  • ⑩ Hand Crank and Its Storage
Circuit Breaker Internal Structure Components
  • 1. Secondary Circuit Terminal (Fixed)
  • 2. Drawer Chassis
  • 3. Safety Barrier
  • 4. Secondary Circuit Terminal (Movable)
  • 5. Auxiliary Contact
  • 6. Shunt Release
  • 7. Under voltage Release
  • 8. Closing Electromagnet
  • 9. Operating Mechanism
  • 10. Motorized Smart Mechanism
  • 11. Intelligent Controller
  • 12. Front Panel
Technical Parameters
Category 2000A Frame Level 3200A Frame Level 4000A Frame Level 6300A Frame Level
Rated Current (A) 200, 250, 315, 400, 500, 630, 800, 1000, 1250, 1600, 2000 2000, 2500, 2900, 3200 3200, 3600, 4000 4000, 5000, 6300
Total Number of Operating Cycles 10000 5000 5000 2000
Rated Short-Circuit Breaking Capacity Icu (kA) O-Co 400V 80 100 100 120
690V 50 65 65 80
Rated Short-Circuit Making Capacity nxlcu (kA) / cosA 400V 176 / 0.2 220 / 0.2 220 / 0.2 264 / 0.2
690V 105 / 0.25 143 / 0.2 143 / 0.2 187 / 0.2
Service Short-Circuit Breaking Capacity Ics (kA) O-C0-Co 400V 50 65 80 100
690V 40 50 65 80
Rated Short-Time Withstand Current Icw (kA) 1s, 0.4s, 0-Co 400V 50 65 65/80 (MCR) 85/100 (MCR)
690V 40 50 50/65 (MCR) 65/75 (MCR)
Operating Voltage & Power Requirements
Power Required / Rated Operating Voltage AC (50Hz) DC
Unit AC220V AC380V DC110V DC220V
Shunt Release 24VA 36VA 24VA 24VA
Undervoltage Release 24VA 36VA - -
Closing Electromagnet 24VA 36VA 24VA 24VA
Motorized Operating Mechanism 2000A 85VA 85VA 85VA 85VA
3200A, 4000A 110VA 110VA 110VA 110VA
6300A 150VA 150VA 150VA 150VA
Intelligent Controller Power Supply Voltage AC220V, AC380V, DC220V, DC110V
Note: The reliable operating voltage range is 70%-110% for shunt release, and 80%-110% for closing electromagnet and operating mechanism.
Installation Dimensions and Overall Dimensions
Installation Dimensions and Overall Dimensions In (A) a (mm) b (mm) e (mm)
Fixed circuit breaker (2000, 2000/4) 400-800 10 95 38
1000-1600 15 105 48
2000 20 115 58
Fixed circuit breaker (3200, 3200/4) 2000-2500 20 115 23
2900-3200 30 135 43
Drawer-Type Circuit Breaker (1000, 2000/3, 4) 400-800 10 95 3
1000-1600 15 105 13
2000 20 115 23
Drawer-Type Circuit Breaker (3200, 3200/4) 2000-2500 20 115 58
2900-3200 30 135 78
Drawer-Type Circuit Breaker (4000) Note: The horizontal center-to-center distance between the panel and circuit breaker shall be 57.5mm
Drawer-Type Circuit Breaker (4000/4) Note: The horizontal center-to-center distance between the panel and circuit breaker shall be 206.5mm
Drawer-Type Circuit Breaker (6300A, 6300/4 In=4000A, 5000A) Note: The horizontal center-to-center distance between the panel and circuit breaker shall be 189mm (3-pole), 246.5mm (4-pole)
Drawer-Type Circuit Breaker (6300 In=6300A) Note: The horizontal center-to-center distance between the panel and circuit breaker shall be 246.5mm
Drawer-Type Circuit Breaker (6300A) Note: The horizontal center-to-center distance between the panel and circuit breaker shall be 304mm
◆ Fixed Circuit Breaker Installation & Outline Dimensions (Refer to Figures 1, 2)
Fixed Circuit Breaker Dimensions Diagram
◆ Drawer-Type Circuit Breaker Installation & Outline Dimensions (Refer to Figures 3, 4, 5, 6, 7, 8, 9)
Drawer-Type Breaker Dimensions Diagram 1
Drawer-Type Breaker Dimensions Diagram 2
Drawer-Type Breaker Dimensions Diagram 3
Drawer-Type Breaker Dimensions Diagram 4
User Connection Busbar Specifications and Quantity
Rated Current External Copper Busbar Specification Number of Bars per Pole Rated Current External Copper Busbar Specification Number of Bars per Pole
630A 40×5 2 2900A 100×10 3
800A 50×5 2 3200A 120×10 3
1000A 60×5 2 3600A 120×10 4
1250A 80×5 2 4000A 120×10 4
1600A 100×5 2 5000A 120×10 5
2000A 100×5 3 6300A 120×10 6
2500A 100×5 4 - - -
Frequently Asked Questions (FAQ)
What frame levels and rated current ranges does this ACB series cover?

The series covers frame sizes of 2000A, 3200A, 4000A, and 6300A, supporting rated currents from 200A up to 6300A to fit a wide variety of power distribution requirements.

What is the difference between Fixed and Drawer-Type circuit breakers?

Fixed circuit breakers are installed directly into the switchboard structure, whereas Drawer-Type units utilize a drawer chassis with disconnect mechanisms, facilitating easier maintenance, isolation, and fast replacement without interrupting other circuits.

What are the power requirements for operating mechanisms and releases?

The shunt release, closing electromagnet, and undervoltage release operate on standard AC 220V/380V or DC 110V/220V with power ratings between 24VA to 36VA. The motorized operating mechanisms require between 85VA and 150VA depending on the current frame size.

What is the reliable operating voltage range for the control accessories?

The reliable operating voltage range is 70% to 110% of rated voltage for the shunt release, and 80% to 110% of rated voltage for the closing electromagnet and motorized operating mechanism.

How do I select the right busbar specification for installation?

Connection copper busbar dimensions and quantities per pole are determined by the breaker's rated current—ranging from two 40×5mm bars for 630A up to six 120×10mm bars per pole for 6300A as listed in the technical user connection table.

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