LDW9 Type 45 Air Circuit Breaker (ACB) is designed for AC 50Hz power distribution networks, with a maximum rated working voltage of 800V and a rated working current 400~6300A.
It is used to distribute electrical energy and protect circuits and power equipment from hazards such as overload, under-voltage, short circuits, and single-phase grounding faults. It features intelligent protection functions and has high precision selective protection, which improves power supply reliability. Additionally, it is equipped with a standard RS485 communication interface, enabling the four remote functions of "telemetry", "remote adjustment", "remote control" and "telecommunication" to fulfill the requirements of cluster control centers and automation systems.
This ACB features a compact structure, high breaking capacity, and no arcing distance. It can be used as an isolating switch when not equipped with an intelligent trip unit and sensors .
It complies with GB14048.2 "Low-voltage switchgear and controlgear - circuit breakers" and IEC60947-2 "Low-voltage switchgear and controlgear - Circuit breakers" and other standards.
Terms of use
Ambient Air Temperature:-5ºC to +40ºC , the average temperature for 24 hours does not exceed +35ºC . Atmospheric Conditions:The relative humidity of the air should not exceed 50% at a maximum temperature of +40 ºC . At lower temperatures, higher relative humidity is acceptable, such as reaching 90% at 25ºC . It is important to consider the condensation on the product surface due to temperature changes. Installation Location:The altitude shall not exceed 2000m. The vertical tilt of the circuit breaker should not exceed 5° . Pollution Level:III Installation Category:Circuit breaker with a maximum rated working voltage 690V, undervoltage release coil, and power transformer primary coil are used for installation category IV. The auxiliary circuits and control circuits are installed in category III. Use Category:B
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