Air circuit breaker WEW1-1000 1000 amp acb withdrawable type acb fixed type 400VAC/690VAC 1000A 3/4p acb
Introduction to 400V Air Circuit Breakers (ACB) and Their Applications
In the realm of electrical engineering, the importance of circuit protection cannot be overstated. The use of reliable and efficient circuit breakers is crucial in safeguarding electrical systems from overloads and short circuits. One such essential component is the 400V air circuit breaker (ACB), which plays a pivotal role in ensuring the safety and stability of electrical installations. In this article, we will delve into the world of 400V air circuit breakers, exploring their features, applications, and the critical role they play in modern electrical systems.
Understanding 400V Air Circuit Breakers
A 400V air circuit breaker is a type of circuit protection device designed to operate at a voltage of 400V. It is capable of interrupting and breaking the flow of electrical current in the event of an overload or short circuit, thereby preventing damage to the electrical system and ensuring the safety of personnel and equipment. These circuit breakers are specifically engineered to handle the demands of low voltage applications, making them an integral part of various industrial, commercial, and residential electrical installations.
Main performance index of WEW1 series circuit breaker
| WEW1 Moulded Case Circuit Breaker | 1000 | ||||||||||||
| Rated operating current In (A),40℃ | 200-400-630-800-1000 | ||||||||||||
| 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 | 55 | 65 | ||||||||||
| AC690V | 25 | 50 | |||||||||||
|
Rated service breaking capacity Ics (kA) |
AC220/230/240V | 42 | 55 | ||||||||||
| AC380/400/415V | 20 | 42 | |||||||||||
|
Rated short-time withstand current Icw (kA/1s) |
AC220/230/240V | 42 | 55 | ||||||||||
| AC380/400/415V | 20 | 42 | |||||||||||
|
Mechanical life (CO recycle) |
Maintenance | 20000 | |||||||||||
|
Electrical life (CO recycle) |
AC415V,In | 2000 | |||||||||||
| AC690V,In | 1000 | ||||||||||||
| 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) | 36.5/46 | 46.5/46 | ||||||||||
| Height | 43/55 | 51/55 | |||||||||||
| Depth | 32.5/42 | 37/42 | |||||||||||
| Weight | |||||||||||||
| Weight(kg)/Fixed | 1P | 23.7/24.4/25 | |||||||||||
| 2P | 32.9/33.5/34.2 | ||||||||||||
| Weight(kg)/Drawer | 3P | 42.82/42.85/43.66 | |||||||||||
| 4P | 53.3/53.3/53.9 | ||||||||||||
Main performance index of WEW1 series circuit breaker
Door frame size and installation hole spacing
