Air circuit breaker WEW1-4000 air circuit breaker withdrawable type acb fixed type switch ODM 400VAC/690VAC 4000A 3/4p acb
The Role of 400V Air Circuit Breakers in Electrical Safety
The significance of 400V air circuit breakers in ensuring electrical safety cannot be overstated. These circuit breakers serve as the first line of defense against electrical faults, providing reliable protection for both personnel and equipment. By promptly interrupting the flow of current during abnormal conditions, they help prevent catastrophic events such as electrical fires, equipment damage, and electrical shocks. Additionally, the advanced trip units and high breaking capacities of 400V air circuit breakers contribute to the overall resilience and dependability of electrical systems, enhancing their safety and operational efficiency.
Furthermore, the incorporation of modern technologies such as digital protection relays and communication interfaces in 400V air circuit breakers enables enhanced monitoring and control capabilities. This allows for real-time status monitoring, remote operation, and seamless integration with supervisory control and data acquisition (SCADA) systems, thereby empowering facility managers and operators with greater visibility and control over the electrical infrastructure.
Main performance index of WEW1 series circuit breaker
| WEW1 Moulded Case Circuit Breaker | 4000 | ||||||||||||
| Rated operating current In (A),40℃ | 3200-3600-3900-4000 | ||||||||||||
| Rated insulation voltage Ui (V) | 1000 | ||||||||||||
| Rated impulse withstand voltage (kV) | 12 | ||||||||||||
| Rated operational voltage Ue(V),AC 50/60Hz | 400V/690V | ||||||||||||
| Use category | B | ||||||||||||
| Rated operational voltage Ue(V),AC 50/60Hz | 100%In | ||||||||||||
| Breaking capacity code | M | H | |||||||||||
| Number of poles | 3P | ■ | ■ | ||||||||||
| 4P | ■ | ■ | |||||||||||
|
Rated ultimate short-circuit breaking capacity Icu (kA) |
AC380V/400V/415V | 100 | 138 | ||||||||||
| AC690V | 65 | 105 | |||||||||||
|
Rated service breaking capacity Ics (kA) |
AC220/230/240V | 80 | 138 | ||||||||||
| AC380/400/415V | 65 | 105 | |||||||||||
|
Rated short-time withstand current Icw (kA/1s) |
AC220/230/240V | 80 | 138 | ||||||||||
| AC380/400/415V | 65 | 105 | |||||||||||
|
Mechanical life (CO recycle) |
Maintenance | 20000 | |||||||||||
|
Electrical life (CO recycle) |
AC415V,In | 6000 | |||||||||||
| AC690V,In | 2000 | ||||||||||||
| Standard configuration | Fixed | Drawetry-pe | |||||||||||
| The body of the circuit breaker | ■ | ■ | |||||||||||
| Drawer base | ■ | ■ | |||||||||||
| Intelligent controller | ■ | ■ | |||||||||||
| Upper and lower horizontal connecting wires | ■ | ■ | |||||||||||
| Indicating contact of opening/closing | ■ | ■ | |||||||||||
| Indicating contact of fault tripping | ■ | ■ | |||||||||||
| Auxiliary contact 4NO+4NC | ■ | ■ | |||||||||||
| Electric motor operating mechanism | ■ | ■ | |||||||||||
| Shunt releas | ■ | ■ | |||||||||||
| Optional accessories | |||||||||||||
| Phase partition | Fixed | Drawetry-pe | |||||||||||
| Instantaneous undervoltage release | □ | □ | |||||||||||
| Time-delay undervoltage release | □ | □ | |||||||||||
| Opening and closing button lock | □ | □ | |||||||||||
| Lock for the drawer base | □ | □ | |||||||||||
| Lock for the separation position of the drawer seat | □ | □ | |||||||||||
| Key lock | □ | □ | |||||||||||
| Door interlock | □ | □ | |||||||||||
| Auxiliary contact 6NO+6NC | □ | □ | |||||||||||
| Electric indications of three positions on the drawer base | □ | □ | |||||||||||
| Steel cable interlock | □ | □ | |||||||||||
| Locking interlock | □ | □ | |||||||||||
| Dual power controller | □ | □ | |||||||||||
| External neutral line transformer | □ | □ | |||||||||||
| Zero-sequence transformer | □ | □ | |||||||||||
| Ground current transformer and its accessories | □ | □ | |||||||||||
| Dimension | |||||||||||||
|
Dimension (mm) W×H×D |
Width (3P/4P) | 66/105 | 66/105 | ||||||||||
| Height | 57/61 | 60/62 | |||||||||||
| Depth | 60/62 | 57/61 | |||||||||||
| Weight | |||||||||||||
| Weight(kg)/Fixed | 1P | 83/83 | |||||||||||
| 2P | 110.2/125.2 | ||||||||||||
| Weight(kg)/Drawer | 3P | 122/150 | |||||||||||
| 4P | 155/175 | ||||||||||||
Main performance index of WEW1 series circuit breaker
Door frame size and installation hole spacing
