YSA4 Intelligent Air Circuit Breaker (ACB) | 200A–1600A Smart Distribution
YSA4 Intelligent Air Circuit Breaker (ACB) | 200A–1600A Smart Distribution
This is a custom-made product. Please contact us to discuss your specifications and receive a quotation.
Description
YSA4 Intelligent Air Circuit Breaker (ACB)
The YSA4 is a compact intelligent air circuit breaker (ACB) for AC 50Hz power distribution networks, wind farm transformer substations, and main tower power systems. Rated from 200A to 1600A at 400V/690V, it integrates advanced multi-protection functions with smart bus communication — enabling full remote monitoring and control as a terminal element in power distribution automation systems.
Key Features
- Intelligent Bus-Type Controller: Modular smart controller as the central processing unit; supports Modbus, Profibus-DP, and DeviceNet fieldbus protocols
- Self-Powered Control Circuit: Operates reliably even when auxiliary power fails — ensures protection during overload, overcurrent, or short-circuit faults
- Four-Remote Functions (四遥): Remote telemetry, remote signaling, remote control, and remote adjustment via upper-level SCADA systems
- ATS Compatibility: Works with mechanical interlock (dual-lock) for automatic source transfer switching; supports real-time monitoring and fire alarm control
- Selective Protection: High-precision selective protection improves power supply reliability
- Isolation Function: Can be used as an isolating switch in addition to circuit protection
Technical Specifications
| Rated Frequency | AC 50Hz |
| Rated Current | 200A – 1600A |
| Rated Insulation Voltage | 1000V |
| Rated Working Voltage | 400V / 690V |
| Communication Protocols | Modbus RTU, Profibus-DP, DeviceNet |
| Protection Functions | Overload, undervoltage, short-circuit, single-phase ground fault |
Standards Compliance
- GB/T 14048.1 — Low-voltage switchgear, Part 1: General (IEC 60947-1)
- GB/T 14048.2 — Low-voltage circuit breakers (IEC 60947-2)
- GB/T 14048.5 — Control circuit devices (IEC 60947-5-1)
- GB/T 20645 — Low-voltage electrical apparatus for high-altitude environments
- JB/Z 19582.1/2/3 — Modbus application protocol specifications
- GB/T 18858.3 — DeviceNet CDI interface standard
- GB/T 20540 — Profibus-DP fieldbus specification
OEM/ODM available. Contact Wanlong Electric for custom specifications, volume pricing, and technical support.
Care
To maintain the beauty and integrity of your purchase, we recommend treating it with care. Simple maintenance practices, such as gentle washing and proper storage, can effectively preserve the longevity of your favorites. We encourage you to refer to the care instructions included with each item, designed to help you keep your purchase in top condition.
Design
Our dedication to excellence extends beyond materials; it encompasses the artistry and craftsmanship illustrated in every piece we create.