WATSNB-250/200.3CBR_Schenider_PRODUCT_吉林易择科技技术发展有限公司

The Schneider Electric WATSNB‑250/200 .3CBR is a dual power automatic transfer switch designed for three‑phase low‑voltage power distribution systems. It automatically or manually transfers the electrical load between two independent AC power sources (such as utility mains and a standby generator) to ensure continuous power supply for critical equipment. The 3‑pole configuration switches the three phase conductors (L1, L2, L3) without neutral, making it suitable for systems where neutral switching is not required. Auxiliary contacts provide remote status indication and integration with control or monitoring systems. An interlocking mechanism prevents both power sources from feeding the load simultaneously, enhancing safety.

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DESCRIBE

Technical Specifications Parameter Specification Model WATSNB‑250/200 .3CBR Product Type Dual Power Automatic Transfer Switch Rated Current 250 A Switched Poles 3‑pole (L1, L2, L3; does not switch neutral) Controller / Configuration Code .3CBR (3‑pole with auxiliary/feedback contacts and interlock) Operation Modes Automatic transfer, manual override, interlocked switching Rated System Voltage Low‑voltage three‑phase AC system (typically up to ~400–440 V) Rated Frequency 50 Hz / 60 Hz Auxiliary Contacts Included for remote indication of switch position and transfer status Safety Interlock Prevents both power sources from being connected at the same time Mounting Panel or switchboard installation Applications Utility to generator changeover, backup power switching, industrial/commercial distribution

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