Description
The WN45-2000 is an air circuit breaker (ACB) for AC 50 Hz distribution networks rated up to 690 V and 400-6300 A. It is used as a main incoming or feeder breaker where the required current and short-circuit level exceed what moulded case devices can handle, and it adds intelligent, selective protection to improve supply reliability.
Protection and control
- Clears overload, under-voltage, short circuit and single-phase earth faults.
- Intelligent protection with high-accuracy selectivity, so an upstream breaker does not trip for a downstream fault.
- Standard RS485 interface supporting telemetry, remote signalling, remote control and remote adjustment (four-remote functions) for control centres and automation systems.
Typical applications
- Main incoming or feeder protection in low-voltage substations and switchgear.
- High-current distribution in metallurgy, petrochemical and manufacturing plants.
- Projects that need coordinated, selective protection and remote monitoring.
Selection and ordering
Confirm the system voltage, the required rated current (400-6300 A), the prospective short-circuit current at the installation point, the protection functions you need, and whether RS485 communication is required. We will confirm the correct frame and rating and provide a quotation.
FAQ
When should I choose an ACB instead of an MCCB?
Choose an air circuit breaker when the required current is high (here up to 6300 A) and it will serve as a main incoming or feeder breaker. Moulded case circuit breakers are more compact and are used for lower-current distribution and motor circuits.
What does the RS485 interface allow?
It supports telemetry, remote signalling, remote control and remote adjustment, so the breaker can be monitored and operated from a control centre or automation system.
Can the breaker be built to special requirements?
CWNE can develop and produce special types and specifications to customer samples, drawings and technical requirements. Contact us with your requirements.
Request Quote
Tell us your specifications, quantity, or application scenario and we will reply with a tailored quote.
